{"schema":"threatline.record/2","record":{"id":"CVE-2026-97516","aliases":[],"summary":"wifi: rtw88: Add NULL check for chip->edcca_th in rtw_fw_adaptivity_result()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtw88: Add NULL check for chip->edcca_th in rtw_fw_adaptivity_result()\n\nIt was recently reported that rtw_fw_adaptivity_result()\nin fw.c dereferences rtwdev->chip->edcca_th without\na NULL check. The issue is that devices with the\n8821CE chip don't define edcca_th in their chip\ninfo. As a result, when rtw_fw_adaptivity_result()\ntries to dereference it, the kernel triggers an oops.\n\nAdd a NULL check for edcca_th before dereferencing\nit in rtw_fw_adaptivity_result() in fw.c. Placing\nthe check at the function entry avoids logging any\ngarbage values.\n\nThis change does not address the root cause for\nthis behavior, but it prevents the NULL dereference\nand the resulting oops while a more permanent solution\nis developed.\n\nTested on a 8822CE chip which defines edcca_th, so\nthis issue is not present on it, but it still uses\nthis driver and I can verify there are no regressions.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97516","source_modified_at":"2026-10-03T10:59:10.452Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"Linux","vendor":"Linux","versions":[{"version":"fe7bc23a8c5eba8a49061c1d15d0a9d45ef18130","lessThan":"a8cdb18ef80d67790d8611ba94ae3d81901c9e04","status":"affected","versionType":"git"},{"version":"fe7bc23a8c5eba8a49061c1d15d0a9d45ef18130","lessThan":"0b58a5ac9170a6f5e6425f8e1a4b3e1d9c2bf53d","status":"affected","versionType":"git"},{"version":"fe7bc23a8c5eba8a49061c1d15d0a9d45ef18130","lessThan":"6fa23cafaf30f4877e357f8eebcff00dff4aa9cb","status":"affected","versionType":"git"},{"version":"fe7bc23a8c5eba8a49061c1d15d0a9d45ef18130","lessThan":"1d1f250432cd8704c3c125168887f9724021c81a","status":"affected","versionType":"git"},{"version":"fe7bc23a8c5eba8a49061c1d15d0a9d45ef18130","lessThan":"d5e6f353ce1e1c25b8458ea390ed09d2377412c5","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97516","source_modified_at":"2026-10-03T10:59:10.452Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"Linux","vendor":"Linux","versions":[{"version":"5.16","status":"affected"},{"version":"0","lessThan":"5.16","status":"unaffected","versionType":"semver"},{"version":"6.1.189","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.158","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.111","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.53","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97516","source_modified_at":"2026-10-03T10:59:10.452Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Linux","ecosystem":null},"version":"0b58a5ac9170a6f5e6425f8e1a4b3e1d9c2bf53d","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97516","source_modified_at":"2026-10-03T10:59:10.452Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Linux","ecosystem":null},"version":"6fa23cafaf30f4877e357f8eebcff00dff4aa9cb","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97516","source_modified_at":"2026-10-03T10:59:10.452Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Linux","ecosystem":null},"version":"1d1f250432cd8704c3c125168887f9724021c81a","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00156,"percentile":0.04414,"score_date":"2026-10-23"},"published_at":"2026-09-24T16:05:14.263Z","modified_at":"2026-10-03T10:59:10.452Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-97516","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-10-03T10:59:10.452Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-97516","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/a8cdb18ef80d67790d8611ba94ae3d81901c9e04"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/0b58a5ac9170a6f5e6425f8e1a4b3e1d9c2bf53d"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/6fa23cafaf30f4877e357f8eebcff00dff4aa9cb"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/1d1f250432cd8704c3c125168887f9724021c81a"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/d5e6f353ce1e1c25b8458ea390ed09d2377412c5"}],"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":"2026-10-03T10:59:10.452Z","content_hash":"111e6d87dfd8897886e071e29bc4db0467d13f4ba2f63e60f5caa00b950e5afe"}}