{"dataType": "CVE_RECORD", "cveMetadata": {"cveId": "CVE-2024-26635", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-19T14:20:24.136Z", "datePublished": "2024-03-18T10:14:47.213Z", "dateUpdated": "2024-12-19T08:43:56.801Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-12-19T08:43:56.801Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nllc: Drop support for ETH_P_TR_802_2.\n\nsyzbot reported an uninit-value bug below. [0]\n\nllc supports ETH_P_802_2 (0x0004) and used to support ETH_P_TR_802_2\n(0x0011), and syzbot abused the latter to trigger the bug.\n\n write$tun(r0, &(0x7f0000000040)={@val={0x0, 0x11}, @val, @mpls={[], @llc={@snap={0xaa, 0x1, ')', \"90e5dd\"}}}}, 0x16)\n\nllc_conn_handler() initialises local variables {saddr,daddr}.mac\nbased on skb in llc_pdu_decode_sa()/llc_pdu_decode_da() and passes\nthem to __llc_lookup().\n\nHowever, the initialisation is done only when skb->protocol is\nhtons(ETH_P_802_2), otherwise, __llc_lookup_established() and\n__llc_lookup_listener() will read garbage.\n\nThe missing initialisation existed prior to commit 211ed865108e\n(\"net: delete all instances of special processing for token ring\").\n\nIt removed the part to kick out the token ring stuff but forgot to\nclose the door allowing ETH_P_TR_802_2 packets to sneak into llc_rcv().\n\nLet's remove llc_tr_packet_type and complete the deprecation.\n\n[0]:\nBUG: KMSAN: uninit-value in __llc_lookup_established+0xe9d/0xf90\n __llc_lookup_established+0xe9d/0xf90\n __llc_lookup net/llc/llc_conn.c:611 [inline]\n llc_conn_handler+0x4bd/0x1360 net/llc/llc_conn.c:791\n llc_rcv+0xfbb/0x14a0 net/llc/llc_input.c:206\n __netif_receive_skb_one_core net/core/dev.c:5527 [inline]\n __netif_receive_skb+0x1a6/0x5a0 net/core/dev.c:5641\n netif_receive_skb_internal net/core/dev.c:5727 [inline]\n netif_receive_skb+0x58/0x660 net/core/dev.c:5786\n tun_rx_batched+0x3ee/0x980 drivers/net/tun.c:1555\n tun_get_user+0x53af/0x66d0 drivers/net/tun.c:2002\n tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2048\n call_write_iter include/linux/fs.h:2020 [inline]\n new_sync_write fs/read_write.c:491 [inline]\n vfs_write+0x8ef/0x1490 fs/read_write.c:584\n ksys_write+0x20f/0x4c0 fs/read_write.c:637\n __do_sys_write fs/read_write.c:649 [inline]\n __se_sys_write fs/read_write.c:646 [inline]\n __x64_sys_write+0x93/0xd0 fs/read_write.c:646\n do_syscall_x64 arch/x86/entry/common.c:51 [inline]\n do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82\n entry_SYSCALL_64_after_hwframe+0x63/0x6b\n\nLocal variable daddr created at:\n llc_conn_handler+0x53/0x1360 net/llc/llc_conn.c:783\n llc_rcv+0xfbb/0x14a0 net/llc/llc_input.c:206\n\nCPU: 1 PID: 5004 Comm: syz-executor994 Not tainted 6.6.0-syzkaller-14500-g1c41041124bd #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["include/net/llc_pdu.h", "net/llc/llc_core.c"], "versions": [{"version": "211ed865108e24697b44bee5daac502ee6bdd4a4", "lessThan": "165ad1e22779685c3ed3dd349c6c4c632309cc62", "status": "affected", "versionType": "git"}, {"version": "211ed865108e24697b44bee5daac502ee6bdd4a4", "lessThan": "b8e8838f82f332ae80c643dbb1ca4418d0628097", "status": "affected", "versionType": "git"}, {"version": "211ed865108e24697b44bee5daac502ee6bdd4a4", "lessThan": "9ccdef19cf9497c2803b005369668feb91cacdfd", "status": "affected", "versionType": "git"}, {"version": "211ed865108e24697b44bee5daac502ee6bdd4a4", "lessThan": "c0fe2fe7a5a291dfcf6dc64301732c8d3dc6a828", "status": "affected", "versionType": "git"}, {"version": "211ed865108e24697b44bee5daac502ee6bdd4a4", "lessThan": "660c3053d992b68fee893a0e9ec9159228cffdc6", "status": "affected", "versionType": "git"}, {"version": "211ed865108e24697b44bee5daac502ee6bdd4a4", "lessThan": "f1f34a515fb1e25e85dee94f781e7869ae351fb8", "status": "affected", "versionType": "git"}, {"version": "211ed865108e24697b44bee5daac502ee6bdd4a4", "lessThan": "df57fc2f2abf548aa889a36ab0bdcc94a75399dc", "status": "affected", "versionType": "git"}, {"version": "211ed865108e24697b44bee5daac502ee6bdd4a4", "lessThan": "e3f9bed9bee261e3347131764e42aeedf1ffea61", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["include/net/llc_pdu.h", "net/llc/llc_core.c"], "versions": [{"version": "3.5", "status": "affected"}, {"version": "0", "lessThan": "3.5", "status": "unaffected", "versionType": "semver"}, {"version": "4.19.307", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.269", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.210", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.149", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.76", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.15", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.7.3", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.8", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "references": [{"url": "https://git.kernel.org/stable/c/165ad1e22779685c3ed3dd349c6c4c632309cc62"}, {"url": "https://git.kernel.org/stable/c/b8e8838f82f332ae80c643dbb1ca4418d0628097"}, {"url": "https://git.kernel.org/stable/c/9ccdef19cf9497c2803b005369668feb91cacdfd"}, {"url": "https://git.kernel.org/stable/c/c0fe2fe7a5a291dfcf6dc64301732c8d3dc6a828"}, {"url": "https://git.kernel.org/stable/c/660c3053d992b68fee893a0e9ec9159228cffdc6"}, {"url": "https://git.kernel.org/stable/c/f1f34a515fb1e25e85dee94f781e7869ae351fb8"}, {"url": "https://git.kernel.org/stable/c/df57fc2f2abf548aa889a36ab0bdcc94a75399dc"}, {"url": "https://git.kernel.org/stable/c/e3f9bed9bee261e3347131764e42aeedf1ffea61"}], "title": "llc: Drop support for ETH_P_TR_802_2.", "x_generator": {"engine": "bippy-5f407fcff5a0"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T00:07:19.852Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/165ad1e22779685c3ed3dd349c6c4c632309cc62", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/b8e8838f82f332ae80c643dbb1ca4418d0628097", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/9ccdef19cf9497c2803b005369668feb91cacdfd", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/c0fe2fe7a5a291dfcf6dc64301732c8d3dc6a828", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/660c3053d992b68fee893a0e9ec9159228cffdc6", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/f1f34a515fb1e25e85dee94f781e7869ae351fb8", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/df57fc2f2abf548aa889a36ab0bdcc94a75399dc", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/e3f9bed9bee261e3347131764e42aeedf1ffea61", "tags": ["x_transferred"]}, {"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html", "tags": ["x_transferred"]}, {"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html", "tags": ["x_transferred"]}]}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-26635", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T15:55:09.935989Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:33:17.228Z"}}]}, "dataVersion": "5.1"}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/165ad1e22779685c3ed3dd349c6c4c632309cc62", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/b8e8838f82f332ae80c643dbb1ca4418d0628097", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/9ccdef19cf9497c2803b005369668feb91cacdfd", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/c0fe2fe7a5a291dfcf6dc64301732c8d3dc6a828", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/660c3053d992b68fee893a0e9ec9159228cffdc6", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/f1f34a515fb1e25e85dee94f781e7869ae351fb8", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/df57fc2f2abf548aa889a36ab0bdcc94a75399dc", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/e3f9bed9bee261e3347131764e42aeedf1ffea61", "tags": ["x_transferred"]}, {"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html", "tags": ["x_transferred"]}, {"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T00:07:19.852Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-26635", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T15:55:09.935989Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T12:42:15.929Z"}}], "cna": {"title": "llc: Drop support for ETH_P_TR_802_2.", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "211ed865108e24697b44bee5daac502ee6bdd4a4", "lessThan": "165ad1e22779685c3ed3dd349c6c4c632309cc62", "versionType": "git"}, {"status": "affected", "version": "211ed865108e24697b44bee5daac502ee6bdd4a4", "lessThan": "b8e8838f82f332ae80c643dbb1ca4418d0628097", "versionType": "git"}, {"status": "affected", "version": "211ed865108e24697b44bee5daac502ee6bdd4a4", "lessThan": "9ccdef19cf9497c2803b005369668feb91cacdfd", "versionType": "git"}, {"status": "affected", "version": "211ed865108e24697b44bee5daac502ee6bdd4a4", "lessThan": "c0fe2fe7a5a291dfcf6dc64301732c8d3dc6a828", "versionType": "git"}, {"status": "affected", "version": "211ed865108e24697b44bee5daac502ee6bdd4a4", "lessThan": "660c3053d992b68fee893a0e9ec9159228cffdc6", "versionType": "git"}, {"status": "affected", "version": "211ed865108e24697b44bee5daac502ee6bdd4a4", "lessThan": "f1f34a515fb1e25e85dee94f781e7869ae351fb8", "versionType": "git"}, {"status": "affected", "version": "211ed865108e24697b44bee5daac502ee6bdd4a4", "lessThan": "df57fc2f2abf548aa889a36ab0bdcc94a75399dc", "versionType": "git"}, {"status": "affected", "version": "211ed865108e24697b44bee5daac502ee6bdd4a4", "lessThan": "e3f9bed9bee261e3347131764e42aeedf1ffea61", "versionType": "git"}], "programFiles": ["include/net/llc_pdu.h", "net/llc/llc_core.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "3.5"}, {"status": "unaffected", "version": "0", "lessThan": "3.5", "versionType": "semver"}, {"status": "unaffected", "version": "4.19.307", "versionType": "semver", "lessThanOrEqual": "4.19.*"}, {"status": "unaffected", "version": "5.4.269", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.210", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.149", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.76", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.15", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.7.3", "versionType": "semver", "lessThanOrEqual": "6.7.*"}, {"status": "unaffected", "version": "6.8", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["include/net/llc_pdu.h", "net/llc/llc_core.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/165ad1e22779685c3ed3dd349c6c4c632309cc62"}, {"url": "https://git.kernel.org/stable/c/b8e8838f82f332ae80c643dbb1ca4418d0628097"}, {"url": "https://git.kernel.org/stable/c/9ccdef19cf9497c2803b005369668feb91cacdfd"}, {"url": "https://git.kernel.org/stable/c/c0fe2fe7a5a291dfcf6dc64301732c8d3dc6a828"}, {"url": "https://git.kernel.org/stable/c/660c3053d992b68fee893a0e9ec9159228cffdc6"}, {"url": "https://git.kernel.org/stable/c/f1f34a515fb1e25e85dee94f781e7869ae351fb8"}, {"url": "https://git.kernel.org/stable/c/df57fc2f2abf548aa889a36ab0bdcc94a75399dc"}, {"url": "https://git.kernel.org/stable/c/e3f9bed9bee261e3347131764e42aeedf1ffea61"}], "x_generator": {"engine": "bippy-5f407fcff5a0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nllc: Drop support for ETH_P_TR_802_2.\n\nsyzbot reported an uninit-value bug below. [0]\n\nllc supports ETH_P_802_2 (0x0004) and used to support ETH_P_TR_802_2\n(0x0011), and syzbot abused the latter to trigger the bug.\n\n write$tun(r0, &(0x7f0000000040)={@val={0x0, 0x11}, @val, @mpls={[], @llc={@snap={0xaa, 0x1, ')', \"90e5dd\"}}}}, 0x16)\n\nllc_conn_handler() initialises local variables {saddr,daddr}.mac\nbased on skb in llc_pdu_decode_sa()/llc_pdu_decode_da() and passes\nthem to __llc_lookup().\n\nHowever, the initialisation is done only when skb->protocol is\nhtons(ETH_P_802_2), otherwise, __llc_lookup_established() and\n__llc_lookup_listener() will read garbage.\n\nThe missing initialisation existed prior to commit 211ed865108e\n(\"net: delete all instances of special processing for token ring\").\n\nIt removed the part to kick out the token ring stuff but forgot to\nclose the door allowing ETH_P_TR_802_2 packets to sneak into llc_rcv().\n\nLet's remove llc_tr_packet_type and complete the deprecation.\n\n[0]:\nBUG: KMSAN: uninit-value in __llc_lookup_established+0xe9d/0xf90\n __llc_lookup_established+0xe9d/0xf90\n __llc_lookup net/llc/llc_conn.c:611 [inline]\n llc_conn_handler+0x4bd/0x1360 net/llc/llc_conn.c:791\n llc_rcv+0xfbb/0x14a0 net/llc/llc_input.c:206\n __netif_receive_skb_one_core net/core/dev.c:5527 [inline]\n __netif_receive_skb+0x1a6/0x5a0 net/core/dev.c:5641\n netif_receive_skb_internal net/core/dev.c:5727 [inline]\n netif_receive_skb+0x58/0x660 net/core/dev.c:5786\n tun_rx_batched+0x3ee/0x980 drivers/net/tun.c:1555\n tun_get_user+0x53af/0x66d0 drivers/net/tun.c:2002\n tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2048\n call_write_iter include/linux/fs.h:2020 [inline]\n new_sync_write fs/read_write.c:491 [inline]\n vfs_write+0x8ef/0x1490 fs/read_write.c:584\n ksys_write+0x20f/0x4c0 fs/read_write.c:637\n __do_sys_write fs/read_write.c:649 [inline]\n __se_sys_write fs/read_write.c:646 [inline]\n __x64_sys_write+0x93/0xd0 fs/read_write.c:646\n do_syscall_x64 arch/x86/entry/common.c:51 [inline]\n do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82\n entry_SYSCALL_64_after_hwframe+0x63/0x6b\n\nLocal variable daddr created at:\n llc_conn_handler+0x53/0x1360 net/llc/llc_conn.c:783\n llc_rcv+0xfbb/0x14a0 net/llc/llc_input.c:206\n\nCPU: 1 PID: 5004 Comm: syz-executor994 Not tainted 6.6.0-syzkaller-14500-g1c41041124bd #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023"}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-12-19T08:43:56.801Z"}}}, "cveMetadata": {"cveId": "CVE-2024-26635", "state": "PUBLISHED", "dateUpdated": "2024-12-19T08:43:56.801Z", "dateReserved": "2024-02-19T14:20:24.136Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-03-18T10:14:47.213Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{"descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nllc: Drop support for ETH_P_TR_802_2.\n\nsyzbot reported an uninit-value bug below. [0]\n\nllc supports ETH_P_802_2 (0x0004) and used to support ETH_P_TR_802_2\n(0x0011), and syzbot abused the latter to trigger the bug.\n\n write$tun(r0, &(0x7f0000000040)={@val={0x0, 0x11}, @val, @mpls={[], @llc={@snap={0xaa, 0x1, ')', \"90e5dd\"}}}}, 0x16)\n\nllc_conn_handler() initialises local variables {saddr,daddr}.mac\nbased on skb in llc_pdu_decode_sa()/llc_pdu_decode_da() and passes\nthem to __llc_lookup().\n\nHowever, the initialisation is done only when skb->protocol is\nhtons(ETH_P_802_2), otherwise, __llc_lookup_established() and\n__llc_lookup_listener() will read garbage.\n\nThe missing initialisation existed prior to commit 211ed865108e\n(\"net: delete all instances of special processing for token ring\").\n\nIt removed the part to kick out the token ring stuff but forgot to\nclose the door allowing ETH_P_TR_802_2 packets to sneak into llc_rcv().\n\nLet's remove llc_tr_packet_type and complete the deprecation.\n\n[0]:\nBUG: KMSAN: uninit-value in __llc_lookup_established+0xe9d/0xf90\n __llc_lookup_established+0xe9d/0xf90\n __llc_lookup net/llc/llc_conn.c:611 [inline]\n llc_conn_handler+0x4bd/0x1360 net/llc/llc_conn.c:791\n llc_rcv+0xfbb/0x14a0 net/llc/llc_input.c:206\n __netif_receive_skb_one_core net/core/dev.c:5527 [inline]\n __netif_receive_skb+0x1a6/0x5a0 net/core/dev.c:5641\n netif_receive_skb_internal net/core/dev.c:5727 [inline]\n netif_receive_skb+0x58/0x660 net/core/dev.c:5786\n tun_rx_batched+0x3ee/0x980 drivers/net/tun.c:1555\n tun_get_user+0x53af/0x66d0 drivers/net/tun.c:2002\n tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2048\n call_write_iter include/linux/fs.h:2020 [inline]\n new_sync_write fs/read_write.c:491 [inline]\n vfs_write+0x8ef/0x1490 fs/read_write.c:584\n ksys_write+0x20f/0x4c0 fs/read_write.c:637\n __do_sys_write fs/read_write.c:649 [inline]\n __se_sys_write fs/read_write.c:646 [inline]\n __x64_sys_write+0x93/0xd0 fs/read_write.c:646\n do_syscall_x64 arch/x86/entry/common.c:51 [inline]\n do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82\n entry_SYSCALL_64_after_hwframe+0x63/0x6b\n\nLocal variable daddr created at:\n llc_conn_handler+0x53/0x1360 net/llc/llc_conn.c:783\n llc_rcv+0xfbb/0x14a0 net/llc/llc_input.c:206\n\nCPU: 1 PID: 5004 Comm: syz-executor994 Not tainted 6.6.0-syzkaller-14500-g1c41041124bd #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: llc: Eliminaci\u00f3n del soporte para ETH_P_TR_802_2. syzbot inform\u00f3 un error de valor uninit a continuaci\u00f3n. [0] llc admite ETH_P_802_2 (0x0004) y sol\u00eda admitir ETH_P_TR_802_2 (0x0011), y syzbot abus\u00f3 de este \u00faltimo para desencadenar el error. escribir$tun(r0, &(0x7f0000000040)={@val={0x0, 0x11}, @val, @mpls={[], @llc={@snap={0xaa, 0x1, ')', \"90e5dd\" }}}}, 0x16) llc_conn_handler() inicializa las variables locales {saddr,daddr}.mac basadas en skb en llc_pdu_decode_sa()/llc_pdu_decode_da() y las pasa a __llc_lookup(). Sin embargo, la inicializaci\u00f3n se realiza solo cuando skb->protocol es htons(ETH_P_802_2); de lo contrario, __llc_lookup_establecido() y __llc_lookup_listener() leer\u00e1n basura. La inicializaci\u00f3n faltante exist\u00eda antes de el commit 211ed865108e (\"net: eliminar todas las instancias de procesamiento especial para Token Ring\"). Quit\u00f3 la parte para expulsar el token ring, pero se olvid\u00f3 de cerrar la puerta permitiendo que los paquetes ETH_P_TR_802_2 se colaran en llc_rcv(). Eliminemos llc_tr_packet_type y completemos la desaprobaci\u00f3n. [0]: ERROR: KMSAN: valor uninit en __llc_lookup_establecido+0xe9d/0xf90 __llc_lookup_establecido+0xe9d/0xf90 __llc_lookup net/llc/llc_conn.c:611 [en l\u00ednea] llc_conn_handler+0x4bd/0x1360 net/llc/llc_conn.c:79 1 llc_rcv +0xfbb/0x14a0 net/llc/llc_input.c:206 __netif_receive_skb_one_core net/core/dev.c:5527 [en l\u00ednea] __netif_receive_skb+0x1a6/0x5a0 net/core/dev.c:5641 netif_receive_skb_internal net/core/dev.c:5727 [en l\u00ednea] netif_receive_skb+0x58/0x660 net/core/dev.c:5786 tun_rx_batched+0x3ee/0x980 drivers/net/tun.c:1555 tun_get_user+0x53af/0x66d0 drivers/net/tun.c:2002 tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2048 call_write_iter include/linux/fs.h:2020 [en l\u00ednea] new_sync_write fs/read_write.c:491 [en l\u00ednea] vfs_write+0x8ef/0x1490 fs/read_write.c:584 ksys_write+0x20f/0x4c0 fs/read_write.c:637 __do_sys_write fs/read_write.c:649 [en l\u00ednea] __se_sys_write fs/read_write.c:646 [en l\u00ednea] __x64_sys_write+0x93/0xd0 fs/read_write.c:646 do_syscall_x64 arch/x86/entry/common. c: 51 [en l\u00ednea] do_syscall_64+0x44/0x110 arch/x86/entry/comunes.c: 82 entry_syscall_64_after_hwframe+0x63/0x6b local variable daddr creado FBB /0x14a0 net/llc/llc_input.c:206 CPU: 1 PID: 5004 Comm: syz-executor994 No contaminado 6.6.0-syzkaller-14500-g1c41041124bd #0 Nombre de hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 10 /09/2023"}], "id": "CVE-2024-26635", "lastModified": "2024-11-21T09:02:44.140", "metrics": {}, "published": "2024-03-18T11:15:10.203", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/165ad1e22779685c3ed3dd349c6c4c632309cc62"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/660c3053d992b68fee893a0e9ec9159228cffdc6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9ccdef19cf9497c2803b005369668feb91cacdfd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b8e8838f82f332ae80c643dbb1ca4418d0628097"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c0fe2fe7a5a291dfcf6dc64301732c8d3dc6a828"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/df57fc2f2abf548aa889a36ab0bdcc94a75399dc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e3f9bed9bee261e3347131764e42aeedf1ffea61"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f1f34a515fb1e25e85dee94f781e7869ae351fb8"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/165ad1e22779685c3ed3dd349c6c4c632309cc62"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/660c3053d992b68fee893a0e9ec9159228cffdc6"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/9ccdef19cf9497c2803b005369668feb91cacdfd"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/b8e8838f82f332ae80c643dbb1ca4418d0628097"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/c0fe2fe7a5a291dfcf6dc64301732c8d3dc6a828"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/df57fc2f2abf548aa889a36ab0bdcc94a75399dc"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/e3f9bed9bee261e3347131764e42aeedf1ffea61"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/f1f34a515fb1e25e85dee94f781e7869ae351fb8"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: llc: Drop support for ETH_P_TR_802_2.", "id": "2270113", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2270113"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-456", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nllc: Drop support for ETH_P_TR_802_2.\nsyzbot reported an uninit-value bug below. [0]\nllc supports ETH_P_802_2 (0x0004) and used to support ETH_P_TR_802_2\n(0x0011), and syzbot abused the latter to trigger the bug.\nwrite$tun(r0, &(0x7f0000000040)={@val={0x0, 0x11}, @val, @mpls={[], @llc={@snap={0xaa, 0x1, ')', \"90e5dd\"}}}}, 0x16)\nllc_conn_handler() initialises local variables {saddr,daddr}.mac\nbased on skb in llc_pdu_decode_sa()/llc_pdu_decode_da() and passes\nthem to __llc_lookup().\nHowever, the initialisation is done only when skb->protocol is\nhtons(ETH_P_802_2), otherwise, __llc_lookup_established() and\n__llc_lookup_listener() will read garbage.\nThe missing initialisation existed prior to commit 211ed865108e\n(\"net: delete all instances of special processing for token ring\").\nIt removed the part to kick out the token ring stuff but forgot to\nclose the door allowing ETH_P_TR_802_2 packets to sneak into llc_rcv().\nLet's remove llc_tr_packet_type and complete the deprecation.\n[0]:\nBUG: KMSAN: uninit-value in __llc_lookup_established+0xe9d/0xf90\n__llc_lookup_established+0xe9d/0xf90\n__llc_lookup net/llc/llc_conn.c:611 [inline]\nllc_conn_handler+0x4bd/0x1360 net/llc/llc_conn.c:791\nllc_rcv+0xfbb/0x14a0 net/llc/llc_input.c:206\n__netif_receive_skb_one_core net/core/dev.c:5527 [inline]\n__netif_receive_skb+0x1a6/0x5a0 net/core/dev.c:5641\nnetif_receive_skb_internal net/core/dev.c:5727 [inline]\nnetif_receive_skb+0x58/0x660 net/core/dev.c:5786\ntun_rx_batched+0x3ee/0x980 drivers/net/tun.c:1555\ntun_get_user+0x53af/0x66d0 drivers/net/tun.c:2002\ntun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2048\ncall_write_iter include/linux/fs.h:2020 [inline]\nnew_sync_write fs/read_write.c:491 [inline]\nvfs_write+0x8ef/0x1490 fs/read_write.c:584\nksys_write+0x20f/0x4c0 fs/read_write.c:637\n__do_sys_write fs/read_write.c:649 [inline]\n__se_sys_write fs/read_write.c:646 [inline]\n__x64_sys_write+0x93/0xd0 fs/read_write.c:646\ndo_syscall_x64 arch/x86/entry/common.c:51 [inline]\ndo_syscall_64+0x44/0x110 arch/x86/entry/common.c:82\nentry_SYSCALL_64_after_hwframe+0x63/0x6b\nLocal variable daddr created at:\nllc_conn_handler+0x53/0x1360 net/llc/llc_conn.c:783\nllc_rcv+0xfbb/0x14a0 net/llc/llc_input.c:206\nCPU: 1 PID: 5004 Comm: syz-executor994 Not tainted 6.6.0-syzkaller-14500-g1c41041124bd #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023"], "name": "CVE-2024-26635", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-03-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-26635\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-26635\nhttps://lore.kernel.org/linux-cve-announce/[email protected]/T"], "threat_severity": "Low", "upstream_fix": "kernel 4.19.307, kernel 5.4.269, kernel 5.10.210, kernel 5.15.149, kernel 6.1.76, kernel 6.6.15, kernel 6.7.3, kernel 6.8"}