CVE-2026-89556: Linux

Описание

Оригинално описание

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.

Засегнати продукти

• Linux Linux: c92aab819d56d51631f0484ed7af11d9d8ff4cb0 преди 50d0aa7d25ba4bc3606f150cd69755068e79f97f; c92aab819d56d51631f0484ed7af11d9d8ff4cb0 преди e4496dda2c6d0acf7ba5fbce14a2723a8935ceee; c92aab819d56d51631f0484ed7af11d9d8ff4cb0 преди 9a5ff45689329835f874cefe5174e577d141d423
• Linux Linux: 6.13; преди 6.13; 6.18.50 до 6.18.*; 7.2.4 до 7.2.*; 7.3 до *

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-89556
• https://nvd.nist.gov/vuln/detail/CVE-2026-89556
• https://git.kernel.org/stable/c/50d0aa7d25ba4bc3606f150cd69755068e79f97f
• https://git.kernel.org/stable/c/e4496dda2c6d0acf7ba5fbce14a2723a8935ceee
• https://git.kernel.org/stable/c/9a5ff45689329835f874cefe5174e577d141d423