{"id":"CVE-2023-53648","title":"ALSA: ac97: Fix possible NULL dereference in snd_ac97_mixer","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: ac97: Fix possible NULL dereference in snd_ac97_mixer\n\nsmatch error:\nsound/pci/ac97/ac97_codec.c:2354 snd_ac97_mixer() error:\nwe previously assumed 'rac97' could …","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= da3cec35dd3c31d8706db4bf379372ce70d92118 < 809af7bb4219bdeef0dbb8b2ed700d6516d13fe9","Linux >= da3cec35dd3c31d8706db4bf379372ce70d92118 < e4cccff1e7ab6ea30995b6fbbb007d02647e025c","Linux >= da3cec35dd3c31d8706db4bf379372ce70d92118 < 5f13d67027fa782096e6aee0db5dce61c4aeb613","Linux >= da3cec35dd3c31d8706db4bf379372ce70d92118 < f923a582217b198b557756809ffe42ac0fad6adb","Linux >= da3cec35dd3c31d8706db4bf379372ce70d92118 < 300e26e3e64880de5013eac8831cf44387ef752c","Linux >= da3cec35dd3c31d8706db4bf379372ce70d92118 < d28b83252e150155b8b8c65b612c555e93c8b45f","Linux >= da3cec35dd3c31d8706db4bf379372ce70d92118 < 09baf460dfba79ee6a0c72e68ccdbbba84d894df","Linux >= da3cec35dd3c31d8706db4bf379372ce70d92118 < 228da1fa124470606ac19783e551f9d51a1e01b0","Linux >= da3cec35dd3c31d8706db4bf379372ce70d92118 < 79597c8bf64ca99eab385115743131d260339da5","Linux 2.6.28"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-05T20:26:24.421507Z"},"published":"2025-10-07","updated":"2026-11-05","sourceUpdated":"2026-11-05T20:31:19.302Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2023-53648","references":[{"url":"https://git.kernel.org/stable/c/809af7bb4219bdeef0dbb8b2ed700d6516d13fe9"},{"url":"https://git.kernel.org/stable/c/e4cccff1e7ab6ea30995b6fbbb007d02647e025c"},{"url":"https://git.kernel.org/stable/c/5f13d67027fa782096e6aee0db5dce61c4aeb613"},{"url":"https://git.kernel.org/stable/c/f923a582217b198b557756809ffe42ac0fad6adb"},{"url":"https://git.kernel.org/stable/c/300e26e3e64880de5013eac8831cf44387ef752c"},{"url":"https://git.kernel.org/stable/c/d28b83252e150155b8b8c65b612c555e93c8b45f"},{"url":"https://git.kernel.org/stable/c/09baf460dfba79ee6a0c72e68ccdbbba84d894df"},{"url":"https://git.kernel.org/stable/c/228da1fa124470606ac19783e551f9d51a1e01b0"},{"url":"https://git.kernel.org/stable/c/79597c8bf64ca99eab385115743131d260339da5"}],"tags":["cve.org"],"epss":0.00213,"epssPercentile":0.11672,"ingestedAt":"2026-11-05T22:38:31.822Z","slug":"CVE-2023-53648","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nALSA: ac97: Fix possible NULL dereference in snd_ac97_mixer\n\nsmatch error:\nsound/pci/ac97/ac97_codec.c:2354 snd_ac97_mixer() error:\nwe previously assumed 'rac97' could be null (see line 2072)\n\nremove redundant assignment, return error if rac97 is NULL.\n\n## Affected\n\n- `Linux >= da3cec35dd3c31d8706db4bf379372ce70d92118 < 809af7bb4219bdeef0dbb8b2ed700d6516d13fe9`\n- `Linux >= da3cec35dd3c31d8706db4bf379372ce70d92118 < e4cccff1e7ab6ea30995b6fbbb007d02647e025c`\n- `Linux >= da3cec35dd3c31d8706db4bf379372ce70d92118 < 5f13d67027fa782096e6aee0db5dce61c4aeb613`\n- `Linux >= da3cec35dd3c31d8706db4bf379372ce70d92118 < f923a582217b198b557756809ffe42ac0fad6adb`\n- `Linux >= da3cec35dd3c31d8706db4bf379372ce70d92118 < 300e26e3e64880de5013eac8831cf44387ef752c`\n- `Linux >= da3cec35dd3c31d8706db4bf379372ce70d92118 < d28b83252e150155b8b8c65b612c555e93c8b45f`\n- `Linux >= da3cec35dd3c31d8706db4bf379372ce70d92118 < 09baf460dfba79ee6a0c72e68ccdbbba84d894df`\n- `Linux >= da3cec35dd3c31d8706db4bf379372ce70d92118 < 228da1fa124470606ac19783e551f9d51a1e01b0`\n- `Linux >= da3cec35dd3c31d8706db4bf379372ce70d92118 < 79597c8bf64ca99eab385115743131d260339da5`\n- `Linux 2.6.28`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}