Skip to content
CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-89556

module: validate string table section types

Description

In 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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • c92aab819d56d51631f0484ed7af11d9d8ff4cb0 to < 50d0aa7d25ba4bc3606f150cd69755068e79f97faffected
  • c92aab819d56d51631f0484ed7af11d9d8ff4cb0 to < e4496dda2c6d0acf7ba5fbce14a2723a8935ceeeaffected
  • c92aab819d56d51631f0484ed7af11d9d8ff4cb0 to < 9a5ff45689329835f874cefe5174e577d141d423affected

Linux Linux

Default version status: affected

  • 6.13affected
  • 0 to < 6.13unaffected
  • 6.18.50 to ≤ 6.18.*unaffected
  • 7.2.4 to ≤ 7.2.*unaffected
  • 7.3 to ≤ *unaffected

References