{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-43201", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-01T14:12:55.992Z", "datePublished": "2026-05-06T11:28:07.565Z", "dateUpdated": "2026-05-06T11:28:07.565Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-06T11:28:07.565Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nAPEI/GHES: ARM processor Error: don't go past allocated memory\n\nIf the BIOS generates a very small ARM Processor Error, or\nan incomplete one, the current logic will fail to deferrence\n\n\terr->section_length\nand\n\tctx_info->size\n\nAdd checks to avoid that. With such changes, such GHESv2\nrecords won't cause OOPSes like this:\n\n[ 1.492129] Internal error: Oops: 0000000096000005 [#1] SMP\n[ 1.495449] Modules linked in:\n[ 1.495820] CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 Not tainted 6.18.0-rc1-00017-gabadcc3553dd-dirty #18 PREEMPT\n[ 1.496125] Hardware name: QEMU QEMU Virtual Machine, BIOS unknown 02/02/2022\n[ 1.496433] Workqueue: kacpi_notify acpi_os_execute_deferred\n[ 1.496967] pstate: 814000c5 (Nzcv daIF +PAN -UAO -TCO +DIT -SSBS BTYPE=--)\n[ 1.497199] pc : log_arm_hw_error+0x5c/0x200\n[ 1.497380] lr : ghes_handle_arm_hw_error+0x94/0x220\n\n0xffff8000811c5324 is in log_arm_hw_error (../drivers/ras/ras.c:75).\n70\t\terr_info = (struct cper_arm_err_info *)(err + 1);\n71\t\tctx_info = (struct cper_arm_ctx_info *)(err_info + err->err_info_num);\n72\t\tctx_err = (u8 *)ctx_info;\n73\n74\t\tfor (n = 0; n < err->context_info_num; n++) {\n75\t\t\tsz = sizeof(struct cper_arm_ctx_info) + ctx_info->size;\n76\t\t\tctx_info = (struct cper_arm_ctx_info *)((long)ctx_info + sz);\n77\t\t\tctx_len += sz;\n78\t\t}\n79\n\nand similar ones while trying to access section_length on an\nerror dump with too small size.\n\n[ rjw: Subject tweaks ]"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/acpi/apei/ghes.c", "drivers/ras/ras.c"], "versions": [{"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "242c652849d979d0133c315a42d9acea0ff88390", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "136093ba4161e0080088abff48273f6830a47766", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "db103b8bd3a4aca69b1b5fe8831a6ed75ac4b3bd", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "87880af2d24e62a84ed19943dbdd524f097172f2", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/acpi/apei/ghes.c", "drivers/ras/ras.c"], "versions": [{"version": "6.12.75", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.16", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.6", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.12.75"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.18.16"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.19.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "7.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/242c652849d979d0133c315a42d9acea0ff88390"}, {"url": "https://git.kernel.org/stable/c/136093ba4161e0080088abff48273f6830a47766"}, {"url": "https://git.kernel.org/stable/c/db103b8bd3a4aca69b1b5fe8831a6ed75ac4b3bd"}, {"url": "https://git.kernel.org/stable/c/87880af2d24e62a84ed19943dbdd524f097172f2"}], "title": "APEI/GHES: ARM processor Error: don't go past allocated memory", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nAPEI/GHES: ARM processor Error: don't go past allocated memory\n\nIf the BIOS generates a very small ARM Processor Error, or\nan incomplete one, the current logic will fail to deferrence\n\n\terr->section_length\nand\n\tctx_info->size\n\nAdd checks to avoid that. With such changes, such GHESv2\nrecords won't cause OOPSes like this:\n\n[ 1.492129] Internal error: Oops: 0000000096000005 [#1] SMP\n[ 1.495449] Modules linked in:\n[ 1.495820] CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 Not tainted 6.18.0-rc1-00017-gabadcc3553dd-dirty #18 PREEMPT\n[ 1.496125] Hardware name: QEMU QEMU Virtual Machine, BIOS unknown 02/02/2022\n[ 1.496433] Workqueue: kacpi_notify acpi_os_execute_deferred\n[ 1.496967] pstate: 814000c5 (Nzcv daIF +PAN -UAO -TCO +DIT -SSBS BTYPE=--)\n[ 1.497199] pc : log_arm_hw_error+0x5c/0x200\n[ 1.497380] lr : ghes_handle_arm_hw_error+0x94/0x220\n\n0xffff8000811c5324 is in log_arm_hw_error (../drivers/ras/ras.c:75).\n70\t\terr_info = (struct cper_arm_err_info *)(err + 1);\n71\t\tctx_info = (struct cper_arm_ctx_info *)(err_info + err->err_info_num);\n72\t\tctx_err = (u8 *)ctx_info;\n73\n74\t\tfor (n = 0; n < err->context_info_num; n++) {\n75\t\t\tsz = sizeof(struct cper_arm_ctx_info) + ctx_info->size;\n76\t\t\tctx_info = (struct cper_arm_ctx_info *)((long)ctx_info + sz);\n77\t\t\tctx_len += sz;\n78\t\t}\n79\n\nand similar ones while trying to access section_length on an\nerror dump with too small size.\n\n[ rjw: Subject tweaks ]"}], "id": "CVE-2026-43201", "lastModified": "2026-05-06T13:07:51.607", "metrics": {}, "published": "2026-05-06T12:16:39.223", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/136093ba4161e0080088abff48273f6830a47766"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/242c652849d979d0133c315a42d9acea0ff88390"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/87880af2d24e62a84ed19943dbdd524f097172f2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/db103b8bd3a4aca69b1b5fe8831a6ed75ac4b3bd"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: APEI/GHES: ARM processor Error: don't go past allocated memory", "id": "2467239", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467239"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-805", "details": ["A flaw was found in the Linux kernel's Advanced Processor Error Interface (APEI) / Generic Hardware Error Source (GHES) handling. If the BIOS generates a very small or incomplete ARM Processor Error record, the kernel's error handling logic can attempt to access memory beyond allocated bounds. This out-of-bounds read can lead to an Operating System Panic (OOPS), effectively causing a denial of service."], "name": "CVE-2026-43201", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-06T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-43201\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-43201\nhttps://lore.kernel.org/linux-cve-announce/2026050646-CVE-2026-43201-b78e@gregkh/T"], "threat_severity": "Moderate"}