{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2024-50262", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-10-21T19:36:19.981Z", "datePublished": "2024-11-09T10:17:50.461Z", "dateUpdated": "2024-12-19T09:36:48.500Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-12-19T09:36:48.500Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix out-of-bounds write in trie_get_next_key()\n\ntrie_get_next_key() allocates a node stack with size trie->max_prefixlen,\nwhile it writes (trie->max_prefixlen + 1) nodes to the stack when it has\nfull paths from the root to leaves. For example, consider a trie with\nmax_prefixlen is 8, and the nodes with key 0x00/0, 0x00/1, 0x00/2, ...\n0x00/8 inserted. 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For example, consider a trie with\nmax_prefixlen is 8, and the nodes with key 0x00/0, 0x00/1, 0x00/2, ...\n0x00/8 inserted. Subsequent calls to trie_get_next_key with _key with\n.prefixlen = 8 make 9 nodes be written on the node stack with size 8."}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-12-19T09:36:48.500Z"}}}, "cveMetadata": {"cveId": "CVE-2024-50262", "state": "PUBLISHED", "dateUpdated": "2024-12-19T09:36:48.500Z", "dateReserved": "2024-10-21T19:36:19.981Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-11-09T10:17:50.461Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

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For example, consider a trie with\nmax_prefixlen is 8, and the nodes with key 0x00/0, 0x00/1, 0x00/2, ...\n0x00/8 inserted. Subsequent calls to trie_get_next_key with _key with\n.prefixlen = 8 make 9 nodes be written on the node stack with size 8."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bpf: Se corrige la escritura fuera de los l\u00edmites en trie_get_next_key() trie_get_next_key() asigna una pila de nodos con tama\u00f1o trie->max_prefixlen, mientras escribe (trie->max_prefixlen + 1) nodos en la pila cuando tiene rutas completas desde la ra\u00edz hasta las hojas. Por ejemplo, considere un trie con max_prefixlen es 8, y los nodos con clave 0x00/0, 0x00/1, 0x00/2, ... 0x00/8 insertados. Las llamadas posteriores a trie_get_next_key con _key con .prefixlen = 8 hacen que se escriban 9 nodos en la pila de nodos con tama\u00f1o 8."}], "id": "CVE-2024-50262", "lastModified": "2024-12-11T16:15:12.513", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "[email protected]", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2024-11-09T11:15:11.687", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/13400ac8fb80c57c2bfb12ebd35ee121ce9b4d21"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/590976f921723d53ac199c01d5b7b73a94875e68"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/86c8ebe02d8806dd8878d0063e8e185622ab6ea6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/90a6e0e1e151ef7a9282e78f54c3091de2dcc99c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/91afbc0eb3c90258ae378ae3c6ead3d2371e926d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a035df0b98df424559fd383e8e1a268f422ea2ba"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c4b4f9a9ab82238cb158fa4fe61a8c0ae21a4980"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e8494ac079814a53fbc2258d2743e720907488ed"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "[email protected]", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-787"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2024:11486", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-503.19.1.el9_5", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-12-19T00:00:00Z"}, {"advisory": "RHSA-2024:11486", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-503.19.1.el9_5", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-12-19T00:00:00Z"}, {"advisory": "RHSA-2024:10942", "cpe": "cpe:/a:redhat:rhel_eus:9.4", "package": "kernel-0:5.14.0-427.48.1.el9_4", "product_name": "Red Hat Enterprise Linux 9.4 Extended Update Support", "release_date": "2024-12-11T00:00:00Z"}], "bugzilla": {"description": "kernel: bpf: Fix out-of-bounds write in trie_get_next_key()", "id": "2324892", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2324892"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.7", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-787", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nbpf: Fix out-of-bounds write in trie_get_next_key()\ntrie_get_next_key() allocates a node stack with size trie->max_prefixlen,\nwhile it writes (trie->max_prefixlen + 1) nodes to the stack when it has\nfull paths from the root to leaves. For example, consider a trie with\nmax_prefixlen is 8, and the nodes with key 0x00/0, 0x00/1, 0x00/2, ...\n0x00/8 inserted. Subsequent calls to trie_get_next_key with _key with\n.prefixlen = 8 make 9 nodes be written on the node stack with size 8."], "name": "CVE-2024-50262", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "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": "Will not fix", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Will not fix", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-11-09T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-50262\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-50262\nhttps://lore.kernel.org/linux-cve-announce/2024110955-CVE-2024-50262-9cd7@gregkh/T"], "statement": "The default Red Hat Enterprise Linux kernel prevents unprivileged users from being able to use eBPF by the kernel.unprivileged_bpf_disabled sysctl. This would require a privileged user with CAP_SYS_ADMIN or root to be able to abuse this flaw reducing its attack space.\nFor the Red Hat Enterprise Linux 9 to confirm the current state, inspect the sysctl with the command:\ncat /proc/sys/kernel/unprivileged_bpf_disabled\nThe setting of 1 would mean that unprivileged users can not use eBPF, mitigating the flaw.", "threat_severity": "Moderate"}