{"api_version":"1","generated_at":"2026-09-13T13:03:49+00:00","cve":"CVE-2026-89556","urls":{"html":"https://cve.report/CVE-2026-89556","api":"https://cve.report/api/cve/CVE-2026-89556.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-89556","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-89556"},"summary":{"title":"module: validate string table section types","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmodule: validate string table section types\n\nIn elf_validity_cache_sechdrs, section sizes and offsets are validated,\nunless the section type is SHT_NULL or SHT_NOBITS.\n\nLater, elf_validity_cache_secstrings and elf_validity_cache_index_str\naccess the section name table (.shstrtab) and symbol string table\n(.strtab) headers without first ensuring that their types are\nSHT_STRTAB. If a section type is SHT_NULL or SHT_NOBITS, sh_offset has\nnot been validated and may reference out-of-bounds memory when\ndereferenced in elf_validity_cache_secstrings or\nelf_validity_cache_strtab.\n\nValidate that both string section headers are of type SHT_STRTAB before\ncaching them.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-11 20:19:39","updated_at":"2026-09-13 07:17:21"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/9a5ff45689329835f874cefe5174e577d141d423","name":"https://git.kernel.org/stable/c/9a5ff45689329835f874cefe5174e577d141d423","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e4496dda2c6d0acf7ba5fbce14a2723a8935ceee","name":"https://git.kernel.org/stable/c/e4496dda2c6d0acf7ba5fbce14a2723a8935ceee","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/50d0aa7d25ba4bc3606f150cd69755068e79f97f","name":"https://git.kernel.org/stable/c/50d0aa7d25ba4bc3606f150cd69755068e79f97f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89556","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89556","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c92aab819d56d51631f0484ed7af11d9d8ff4cb0 50d0aa7d25ba4bc3606f150cd69755068e79f97f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c92aab819d56d51631f0484ed7af11d9d8ff4cb0 e4496dda2c6d0acf7ba5fbce14a2723a8935ceee git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c92aab819d56d51631f0484ed7af11d9d8ff4cb0 9a5ff45689329835f874cefe5174e577d141d423 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.13","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.13 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":{"cve_year":"2026","cve_id":"89556","cve":"CVE-2026-89556","epss":"0.001980000","percentile":"0.096980000","score_date":"2026-09-12","updated_at":"2026-09-13 00:08:17"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["kernel/module/main.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"50d0aa7d25ba4bc3606f150cd69755068e79f97f","status":"affected","version":"c92aab819d56d51631f0484ed7af11d9d8ff4cb0","versionType":"git"},{"lessThan":"e4496dda2c6d0acf7ba5fbce14a2723a8935ceee","status":"affected","version":"c92aab819d56d51631f0484ed7af11d9d8ff4cb0","versionType":"git"},{"lessThan":"9a5ff45689329835f874cefe5174e577d141d423","status":"affected","version":"c92aab819d56d51631f0484ed7af11d9d8ff4cb0","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["kernel/module/main.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.13"},{"lessThan":"6.13","status":"unaffected","version":"0","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":"6.18.50","versionStartIncluding":"6.13","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.4","versionStartIncluding":"6.13","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"6.13","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmodule: validate string table section types\n\nIn elf_validity_cache_sechdrs, section sizes and offsets are validated,\nunless the section type is SHT_NULL or SHT_NOBITS.\n\nLater, elf_validity_cache_secstrings and elf_validity_cache_index_str\naccess the section name table (.shstrtab) and symbol string table\n(.strtab) headers without first ensuring that their types are\nSHT_STRTAB. If a section type is SHT_NULL or SHT_NOBITS, sh_offset has\nnot been validated and may reference out-of-bounds memory when\ndereferenced in elf_validity_cache_secstrings or\nelf_validity_cache_strtab.\n\nValidate that both string section headers are of type SHT_STRTAB before\ncaching them."}],"providerMetadata":{"dateUpdated":"2026-09-13T06:24:03.161Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/50d0aa7d25ba4bc3606f150cd69755068e79f97f"},{"url":"https://git.kernel.org/stable/c/e4496dda2c6d0acf7ba5fbce14a2723a8935ceee"},{"url":"https://git.kernel.org/stable/c/9a5ff45689329835f874cefe5174e577d141d423"}],"title":"module: validate string table section types","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-89556","datePublished":"2026-09-11T19:44:29.080Z","dateReserved":"2026-09-11T19:38:34.724Z","dateUpdated":"2026-09-13T06:24:03.161Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-11 20:19:39","lastModifiedDate":"2026-09-13 07:17:21","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"89556","Ordinal":"1","Title":"module: validate string table section types","CVE":"CVE-2026-89556","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"89556","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nmodule: validate string table section types\n\nIn elf_validity_cache_sechdrs, section sizes and offsets are validated,\nunless the section type is SHT_NULL or SHT_NOBITS.\n\nLater, elf_validity_cache_secstrings and elf_validity_cache_index_str\naccess the section name table (.shstrtab) and symbol string table\n(.strtab) headers without first ensuring that their types are\nSHT_STRTAB. If a section type is SHT_NULL or SHT_NOBITS, sh_offset has\nnot been validated and may reference out-of-bounds memory when\ndereferenced in elf_validity_cache_secstrings or\nelf_validity_cache_strtab.\n\nValidate that both string section headers are of type SHT_STRTAB before\ncaching them.","Type":"Description","Title":"module: validate string table section types"}]}}}