{"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":"2026-05-11T22:19:56.252Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T22:19:56.252Z"},"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":"2599ad5e33b629a78a14a463a51afa134e9c5b15","lessThan":"242c652849d979d0133c315a42d9acea0ff88390","status":"affected","versionType":"git"},{"version":"22b5096abc9824fb84f0bfe084f5be9f7ea5f2d9","lessThan":"136093ba4161e0080088abff48273f6830a47766","status":"affected","versionType":"git"},{"version":"05954511b73e748d0370549ad9dd9cd95297d97a","lessThan":"db103b8bd3a4aca69b1b5fe8831a6ed75ac4b3bd","status":"affected","versionType":"git"},{"version":"05954511b73e748d0370549ad9dd9cd95297d97a","lessThan":"87880af2d24e62a84ed19943dbdd524f097172f2","status":"affected","versionType":"git"},{"version":"0aa7b12eaa87cd6ffa25d432d3c58986516f8b1c","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":"6.19","status":"affected"},{"version":"0","lessThan":"6.19","status":"unaffected","versionType":"semver"},{"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:*:*:*:*:*:*:*:*","versionStartIncluding":"6.12.63","versionEndExcluding":"6.12.75"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.18.2","versionEndExcluding":"6.18.16"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19","versionEndExcluding":"6.19.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19","versionEndExcluding":"7.0"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.17.13"}]}]}],"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"}}}}