{"api_version":"1","generated_at":"2026-09-12T15:02:49+00:00","cve":"CVE-2026-89588","urls":{"html":"https://cve.report/CVE-2026-89588","api":"https://cve.report/api/cve/CVE-2026-89588.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-89588","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-89588"},"summary":{"title":"ACPI: APEI: GHES: fix ARM section length accounting after header","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: APEI: GHES: fix ARM section length accounting after header\n\nIn ghes_handle_arm_hw_error(), after skipping the cper_sec_proc_arm\nheader with (err + 1), the remaining length was reduced by sizeof(err)\n(pointer size) instead of sizeof(*err) (structure size).\n\nThat overestimates the bytes left for cper_arm_err_info records and can\nlet the parser read past the CPER section when err_info_num is large\nenough relative to error_data_length.\n\nUse sizeof(*err) so the length accounting matches the pointer advance\nand the earlier sizeof(*err) size check.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-11 20:19:43","updated_at":"2026-09-11 20:19:43"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/903308ea40adf0577d82eab69882faf8836326ce","name":"https://git.kernel.org/stable/c/903308ea40adf0577d82eab69882faf8836326ce","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/452eb28e03015abec6d4bf6488ee567706ade4e1","name":"https://git.kernel.org/stable/c/452eb28e03015abec6d4bf6488ee567706ade4e1","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/5ff385e9403e87ae33f65b8c38698d3b1e92cfde","name":"https://git.kernel.org/stable/c/5ff385e9403e87ae33f65b8c38698d3b1e92cfde","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b48b613073c3d652cb1823c15d16f7067cf4cee4","name":"https://git.kernel.org/stable/c/b48b613073c3d652cb1823c15d16f7067cf4cee4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89588","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89588","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 242c652849d979d0133c315a42d9acea0ff88390 5ff385e9403e87ae33f65b8c38698d3b1e92cfde git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 136093ba4161e0080088abff48273f6830a47766 452eb28e03015abec6d4bf6488ee567706ade4e1 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 87880af2d24e62a84ed19943dbdd524f097172f2 b48b613073c3d652cb1823c15d16f7067cf4cee4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 87880af2d24e62a84ed19943dbdd524f097172f2 903308ea40adf0577d82eab69882faf8836326ce git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected db103b8bd3a4aca69b1b5fe8831a6ed75ac4b3bd git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.12.75 6.12.109 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.18.16 6.18.50 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.19.6 6.20 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7.0","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.109 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.50 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.4 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/acpi/apei/ghes.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"5ff385e9403e87ae33f65b8c38698d3b1e92cfde","status":"affected","version":"242c652849d979d0133c315a42d9acea0ff88390","versionType":"git"},{"lessThan":"452eb28e03015abec6d4bf6488ee567706ade4e1","status":"affected","version":"136093ba4161e0080088abff48273f6830a47766","versionType":"git"},{"lessThan":"b48b613073c3d652cb1823c15d16f7067cf4cee4","status":"affected","version":"87880af2d24e62a84ed19943dbdd524f097172f2","versionType":"git"},{"lessThan":"903308ea40adf0577d82eab69882faf8836326ce","status":"affected","version":"87880af2d24e62a84ed19943dbdd524f097172f2","versionType":"git"},{"status":"affected","version":"db103b8bd3a4aca69b1b5fe8831a6ed75ac4b3bd","versionType":"git"},{"lessThan":"6.12.109","status":"affected","version":"6.12.75","versionType":"semver"},{"lessThan":"6.18.50","status":"affected","version":"6.18.16","versionType":"semver"},{"lessThan":"6.20","status":"affected","version":"6.19.6","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/acpi/apei/ghes.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"7.0"},{"lessThan":"7.0","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.109","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.50","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.109","versionStartIncluding":"6.12.75","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.50","versionStartIncluding":"6.18.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.4","versionStartIncluding":"7.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"7.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19.6","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: APEI: GHES: fix ARM section length accounting after header\n\nIn ghes_handle_arm_hw_error(), after skipping the cper_sec_proc_arm\nheader with (err + 1), the remaining length was reduced by sizeof(err)\n(pointer size) instead of sizeof(*err) (structure size).\n\nThat overestimates the bytes left for cper_arm_err_info records and can\nlet the parser read past the CPER section when err_info_num is large\nenough relative to error_data_length.\n\nUse sizeof(*err) so the length accounting matches the pointer advance\nand the earlier sizeof(*err) size check."}],"providerMetadata":{"dateUpdated":"2026-09-11T19:44:52.842Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/5ff385e9403e87ae33f65b8c38698d3b1e92cfde"},{"url":"https://git.kernel.org/stable/c/452eb28e03015abec6d4bf6488ee567706ade4e1"},{"url":"https://git.kernel.org/stable/c/b48b613073c3d652cb1823c15d16f7067cf4cee4"},{"url":"https://git.kernel.org/stable/c/903308ea40adf0577d82eab69882faf8836326ce"}],"title":"ACPI: APEI: GHES: fix ARM section length accounting after header","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-89588","datePublished":"2026-09-11T19:44:52.842Z","dateReserved":"2026-09-11T19:38:34.729Z","dateUpdated":"2026-09-11T19:44:52.842Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-11 20:19:43","lastModifiedDate":"2026-09-11 20:19:43","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"89588","Ordinal":"1","Title":"ACPI: APEI: GHES: fix ARM section length accounting after header","CVE":"CVE-2026-89588","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"89588","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: APEI: GHES: fix ARM section length accounting after header\n\nIn ghes_handle_arm_hw_error(), after skipping the cper_sec_proc_arm\nheader with (err + 1), the remaining length was reduced by sizeof(err)\n(pointer size) instead of sizeof(*err) (structure size).\n\nThat overestimates the bytes left for cper_arm_err_info records and can\nlet the parser read past the CPER section when err_info_num is large\nenough relative to error_data_length.\n\nUse sizeof(*err) so the length accounting matches the pointer advance\nand the earlier sizeof(*err) size check.","Type":"Description","Title":"ACPI: APEI: GHES: fix ARM section length accounting after header"}]}}}