{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2026-43277", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-43277", "idYear": 2026, "status": "PUBLISHED", "publishedAt": "2026-05-06T11:28:59.486Z", "updatedAt": "2026-05-11T22:21:26.865Z", "importedAt": "2026-10-24T01:58:14.884Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "APEI/GHES: ensure that won't go past CPER allocated record", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nAPEI/GHES: ensure that won't go past CPER allocated record\n\nThe logic at ghes_new() prevents allocating too large records, by\nchecking if they're bigger than GHES_ESTATUS_MAX_SIZE (currently, 64KB).\nYet, the allocation is done with the actual number of pages from the\nCPER bios table location, which can be smaller.\n\nYet, a bad firmware could send data with a different size, which might\nbe bigger than the allocated memory, causing an OOPS:\n\n Unable to handle kernel paging request at virtual address fff00000f9b40000\n Mem abort info:\n ESR = 0x0000000096000007\n EC = 0x25: DABT (current EL), IL = 32 bits\n SET = 0, FnV = 0\n EA = 0, S1PTW = 0\n FSC = 0x07: level 3 translation fault\n Data abort info:\n ISV = 0, ISS = 0x00000007, ISS2 = 0x00000000\n CM = 0, WnR = 0, TnD = 0, TagAccess = 0\n GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0\n swapper pgtable: 4k pages, 52-bit VAs, pgdp=000000008ba16000\n [fff00000f9b40000] pgd=180000013ffff403, p4d=180000013fffe403, pud=180000013f85b403, pmd=180000013f68d403, pte=0000000000000000\n Internal error: Oops: 0000000096000007 [#1] SMP\n Modules linked in:\n CPU: 0 UID: 0 PID: 303 Comm: kworker/0:1 Not tainted 6.19.0-rc1-00002-gda407d200220 #34 PREEMPT\n Hardware name: QEMU QEMU Virtual Machine, BIOS unknown 02/02/2022\n Workqueue: kacpi_notify acpi_os_execute_deferred\n pstate: 214020c5 (nzCv daIF +PAN -UAO -TCO +DIT -SSBS BTYPE=--)\n pc : hex_dump_to_buffer+0x30c/0x4a0\n lr : hex_dump_to_buffer+0x328/0x4a0\n sp : ffff800080e13880\n x29: ffff800080e13880 x28: ffffac9aba86f6a8 x27: 0000000000000083\n x26: fff00000f9b3fffc x25: 0000000000000004 x24: 0000000000000004\n x23: ffff800080e13905 x22: 0000000000000010 x21: 0000000000000083\n x20: 0000000000000001 x19: 0000000000000008 x18: 0000000000000010\n x17: 0000000000000001 x16: 00000007c7f20fec x15: 0000000000000020\n x14: 0000000000000008 x13: 0000000000081020 x12: 0000000000000008\n x11: ffff800080e13905 x10: ffff800080e13988 x9 : 0000000000000000\n x8 : 0000000000000000 x7 : 0000000000000001 x6 : 0000000000000020\n x5 : 0000000000000030 x4 : 00000000fffffffe x3 : 0000000000000000\n x2 : ffffac9aba78c1c8 x1 : ffffac9aba76d0a8 x0 : 0000000000000008\n Call trace:\n hex_dump_to_buffer+0x30c/0x4a0 (P)\n print_hex_dump+0xac/0x170\n cper_estatus_print_section+0x90c/0x968\n cper_estatus_print+0xf0/0x158\n __ghes_print_estatus+0xa0/0x148\n ghes_proc+0x1bc/0x220\n ghes_notify_hed+0x5c/0xb8\n notifier_call_chain+0x78/0x148\n blocking_notifier_call_chain+0x4c/0x80\n acpi_hed_notify+0x28/0x40\n acpi_ev_notify_dispatch+0x50/0x80\n acpi_os_execute_deferred+0x24/0x48\n process_one_work+0x15c/0x3b0\n worker_thread+0x2d0/0x400\n kthread+0x148/0x228\n ret_from_fork+0x10/0x20\n Code: 6b14033f 540001ad a94707e2 f100029f (b8747b44)\n ---[ end trace 0000000000000000 ]---\n\nPrevent that by taking the actual allocated are into account when\nchecking for CPER length.\n\n[ rjw: Subject tweaks ]", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "d334a49113a4a33109fd24e46073280ecd1bea0d", "status": "affected", "versionType": "git", "lessThan": "92ba79074c58e65a6e32713758c5a9aecd33c2ea" }, { "version": "d334a49113a4a33109fd24e46073280ecd1bea0d", "status": "affected", "versionType": "git", "lessThan": "616c120dcdf1ce96edcd818e38bce49667f80689" }, { "version": "d334a49113a4a33109fd24e46073280ecd1bea0d", "status": "affected", "versionType": "git", "lessThan": "f3740a1562445f36f08afab8af59e37117b3acdc" }, { "version": "d334a49113a4a33109fd24e46073280ecd1bea0d", "status": "affected", "versionType": "git", "lessThan": "e0ec99115e135dbb58e11a0df007c7d4771d4a17" }, { "version": "d334a49113a4a33109fd24e46073280ecd1bea0d", "status": "affected", "versionType": "git", "lessThan": "b6be51a12441136fdf8c49b2525689fbea1856e1" }, { "version": "d334a49113a4a33109fd24e46073280ecd1bea0d", "status": "affected", "versionType": "git", "lessThan": "6f5d41984ad896736c23e2fff7c80e15c1319132" }, { "version": "d334a49113a4a33109fd24e46073280ecd1bea0d", "status": "affected", "versionType": "git", "lessThan": "98bd9b28d4d11e6739ad86524b4be4ada9025e60" }, { "version": "d334a49113a4a33109fd24e46073280ecd1bea0d", "status": "affected", "versionType": "git", "lessThan": "fa2408a24f8f0db14d9cfc613ef162dc267d7ad4" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "2.6.35", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "2.6.35" }, { "version": "5.10.252", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.202", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.165", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.128", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.12.75", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.12.*" }, { "version": "6.18.16", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.18.*" }, { "version": "6.19.6", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.19.*" }, { "version": "7.0", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }