module: validate string table section types

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-89556
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-11 20:19:39 UTC
Updated2026-09-13 07:17:21 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: module: validate string table section types In elf_validity_cache_sechdrs, section sizes and offsets are validated, unless the section type is SHT_NULL or SHT_NOBITS. Later, elf_validity_cache_secstrings and elf_validity_cache_index_str access the section name table (.shstrtab) and symbol string table (.strtab) headers without first ensuring that their types are SHT_STRTAB. If a section type is SHT_NULL or SHT_NOBITS, sh_offset has not been validated and may reference out-of-bounds memory when dereferenced in elf_validity_cache_secstrings or elf_validity_cache_strtab. Validate that both string section headers are of type SHT_STRTAB before caching them.

Risk And Classification

EPSS: 0.001980000 probability, percentile 0.096980000 (date 2026-09-12)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected c92aab819d56d51631f0484ed7af11d9d8ff4cb0 50d0aa7d25ba4bc3606f150cd69755068e79f97f git Not specified
CNA Linux Linux affected c92aab819d56d51631f0484ed7af11d9d8ff4cb0 e4496dda2c6d0acf7ba5fbce14a2723a8935ceee git Not specified
CNA Linux Linux affected c92aab819d56d51631f0484ed7af11d9d8ff4cb0 9a5ff45689329835f874cefe5174e577d141d423 git Not specified
CNA Linux Linux affected 6.13 Not specified
CNA Linux Linux unaffected 6.13 semver Not specified
CNA Linux Linux unaffected 6.18.50 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.4 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/9a5ff45689329835f874cefe5174e577d141d423 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/e4496dda2c6d0acf7ba5fbce14a2723a8935ceee 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/50d0aa7d25ba4bc3606f150cd69755068e79f97f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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