{"id":"CVE-2026-98266","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: core: Fix potential UAF after asynchronous card release\n\nUsually a sound driver releases the resources assigned to the card via\nsnd_card_free(), and it synchroniz…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: core: Fix potential UAF after asynchronous card release\n\nUsually a sound driver releases the resources assigned to the card via\nsnd_card_free(), and it synchroniz…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 5c0df40aa577e405c458e44e8d458dd78407f4af","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 2dec4642589a663e064e4411d92d6e8fa250d53b","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 398b21608955c9712a012355b69a39407367edc9","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < fd95e68df6fe66344161a1329cbe5e5805e7b704","Linux < 6.12.112","Linux < 6.18.54","Linux < 7.2.8","Linux (all versions)"],"published":"2026-10-06","updated":"2026-10-06","sourceUpdated":"2026-10-06T09:18:15.960","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-98266","references":[{"url":"https://git.kernel.org/stable/c/2dec4642589a663e064e4411d92d6e8fa250d53b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/398b21608955c9712a012355b69a39407367edc9","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/5c0df40aa577e405c458e44e8d458dd78407f4af","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/fd95e68df6fe66344161a1329cbe5e5805e7b704","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-06T08:50:17.424Z","slug":"CVE-2026-98266","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nALSA: core: Fix potential UAF after asynchronous card release\n\nUsually a sound driver releases the resources assigned to the card via\nsnd_card_free(), and it synchronizes with the whole release procedure.\nHowever, when the card is released asynchronously via\nsnd_card_free_when_closed() like USB-audio driver, the situation is\nslightly different; although the snd_card_disconnect() call at the\ndisconnection guarantees that any newer accesses will be gated, the\nin-flight tasks might be still accessing to the underlying card->dev\ndevice even after the disconnection, which would cause a\nuse-after-free in the end, as reported by fuzzers.\n\nFor addressing the bug above, this patch takes the refcount of\ncard->dev at initialization of the card object, and releases at its\ndestructor.   This assures the availability of the card->dev in its\nwhole lifecycle.\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":[]}