{"id":"CVE-2026-89556","revision":"1d16a017dd214590add4fcdf6a099853","records":[{"revision":"1d16a017dd214590add4fcdf6a099853","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89556","aliases":[],"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":0,"publishedAt":"2026-09-11T19:44:29.08+00:00","modifiedAt":"2026-10-19T08:48:49.102+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"kernel/module/main.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"c92aab819d56d51631f0484ed7af11d9d8ff4cb0\",\n                            \"lessThan\": \"50d0aa7d25ba4bc3606f150cd69755068e79f97f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c92aab819d56d51631f0484ed7af11d9d8ff4cb0\",\n                            \"lessThan\": \"e4496dda2c6d0acf7ba5fbce14a2723a8935ceee\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c92aab819d56d51631f0484ed7af11d9d8ff4cb0\",\n                            \"lessThan\": \"9a5ff45689329835f874cefe5174e577d141d423\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"kernel/module/main.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.13\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.13\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.50\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.4\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/50d0aa7d25ba4bc3606f150cd69755068e79f97f","https://git.kernel.org/stable/c/e4496dda2c6d0acf7ba5fbce14a2723a8935ceee","https://git.kernel.org/stable/c/9a5ff45689329835f874cefe5174e577d141d423"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89556","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89556","identifiers":["CVE-2026-89556"]},"retained":false,"historicalAffected":[]}],"coverage":[]}