{"id":"CVE-2026-97516","summary":"wifi: rtw88: Add NULL check for chip-\u003eedcca_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-\u003eedcca_th in rtw_fw_adaptivity_result()\n\nIt was recently reported that rtw_fw_adaptivity_result()\nin fw.c dereferences rtwdev-\u003echip-\u003eedcca_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.","modified":"2026-11-04T14:27:26.948688311Z","published":"2026-09-24T16:05:14.263Z","related":["SUSE-SU-2026:5091-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/97xxx/CVE-2026-97516.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0b58a5ac9170a6f5e6425f8e1a4b3e1d9c2bf53d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/1d1f250432cd8704c3c125168887f9724021c81a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6fa23cafaf30f4877e357f8eebcff00dff4aa9cb"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a8cdb18ef80d67790d8611ba94ae3d81901c9e04"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d5e6f353ce1e1c25b8458ea390ed09d2377412c5"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/97xxx/CVE-2026-97516.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97516"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"fe7bc23a8c5eba8a49061c1d15d0a9d45ef18130"},{"fixed":"a8cdb18ef80d67790d8611ba94ae3d81901c9e04"},{"fixed":"0b58a5ac9170a6f5e6425f8e1a4b3e1d9c2bf53d"},{"fixed":"6fa23cafaf30f4877e357f8eebcff00dff4aa9cb"},{"fixed":"1d1f250432cd8704c3c125168887f9724021c81a"},{"fixed":"d5e6f353ce1e1c25b8458ea390ed09d2377412c5"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-97516.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.189"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.158"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.111"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.53"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-97516.json"}}],"schema_version":"1.9.2"}