{"cve":"CVE-2026-89556","nvd":{"published":"2026-09-11T20:19:39.287","modified":"2026-10-19T09:17:51.100","status":"Received","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.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/50d0aa7d25ba4bc3606f150cd69755068e79f97f","https://git.kernel.org/stable/c/9a5ff45689329835f874cefe5174e577d141d423","https://git.kernel.org/stable/c/e4496dda2c6d0acf7ba5fbce14a2723a8935ceee"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:53:43.293028046+00:00"},"epss":{"cve":"CVE-2026-89556","score":0.00203,"percentile":0.10181,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}