{"schema":"threatline.record/2","record":{"id":"CVE-2026-99113","aliases":[],"summary":"ksmbd: zero the FS_OBJECT_ID_INFORMATION buffer before filling it in","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: zero the FS_OBJECT_ID_INFORMATION buffer before filling it in\n\nsmb2_get_info_filesystem() reports 64 bytes for FS_OBJECT_ID_INFORMATION,\nthat is the whole of struct object_id_info, but writes only 46 of them:\n\n - objid[] is 16 bytes, and when the volume UUID is not available only\n   sizeof(stfs.f_fsid) (8) bytes are copied into it;\n - extended_info.version_string[] is STRING_LENGTH (28) bytes, and only\n   strlen(\"1.1.0\") (5) bytes are copied into it.\n\nThe response buffer is zeroed on allocation (kvzalloc() in\nsmb2_allocate_rsp_buf()), so for a standalone request the remaining 31\nbytes are zero.  In a compound request they need not be.  The offset of\nthe next response is advanced by the length pinned for the previous one,\nso if a preceding command wrote its reply into the buffer and then\nfailed, smb2_set_err_rsp() pins only the short error response and the\nnext reply lands inside the area that has already been written.  Only\nthe header is cleared there:\n\n\tmemset((char *)rsp_hdr, 0, sizeof(struct smb2_hdr) + 2);\n\nThe client then receives up to 31 bytes of a response it was not meant\nto see, including one that failed with an access denied error.\n\nClear the structure before filling it in.  As a side effect\nversion_string is now NUL terminated.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99113","source_modified_at":"2026-10-28T10:34:30.767Z","fetched_at":"2026-10-28T15:55:58.673066Z","product":"Linux","vendor":"Linux","versions":[{"version":"e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9","lessThan":"898cb4f2e12a5ddea1b2d821cc642c3100f46da7","status":"affected","versionType":"git"},{"version":"e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9","lessThan":"015fffa48e96ca8d73a627445341ccff86b02251","status":"affected","versionType":"git"},{"version":"e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9","lessThan":"399aa12450a61a5c73dc77e73f069ece9687c95d","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99113","source_modified_at":"2026-10-28T10:34:30.767Z","fetched_at":"2026-10-28T15:55:58.673066Z","product":"Linux","vendor":"Linux","versions":[{"version":"5.15","status":"affected"},{"version":"0","lessThan":"5.15","status":"unaffected","versionType":"semver"},{"version":"6.18.59","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.13","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99113","source_modified_at":"2026-10-28T10:34:30.767Z","fetched_at":"2026-10-28T15:55:58.673066Z","package":{"name":"Linux","ecosystem":null},"version":"898cb4f2e12a5ddea1b2d821cc642c3100f46da7","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99113","source_modified_at":"2026-10-28T10:34:30.767Z","fetched_at":"2026-10-28T15:55:58.673066Z","package":{"name":"Linux","ecosystem":null},"version":"015fffa48e96ca8d73a627445341ccff86b02251","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99113","source_modified_at":"2026-10-28T10:34:30.767Z","fetched_at":"2026-10-28T15:55:58.673066Z","package":{"name":"Linux","ecosystem":null},"version":"399aa12450a61a5c73dc77e73f069ece9687c95d","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":null,"percentile":null,"score_date":null},"published_at":"2026-10-28T10:34:30.767Z","modified_at":"2026-10-28T10:34:30.767Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-99113","fetched_at":"2026-10-28T15:55:58.673066Z","source_modified_at":"2026-10-28T10:34:30.767Z"}],"sources":["CVE List"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/898cb4f2e12a5ddea1b2d821cc642c3100f46da7"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/015fffa48e96ca8d73a627445341ccff86b02251"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/399aa12450a61a5c73dc77e73f069ece9687c95d"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-28T10:34:30.767Z","content_hash":"669278ac981842b8f2ab65ec252678ae4eb41350b08a78fbda40c115a8f0cb0e"}}