{"id":"CVE-2026-89895","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: cobalt: Avoid freeing ALSA private data twice\n\nsnd_cobalt_card_create() stores cobsc in sc->private_data and installs\nsnd_cobalt_card_private_free() as sc->priva…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: cobalt: Avoid freeing ALSA private data twice\n\nsnd_cobalt_card_create() stores cobsc in sc->private_data and installs\nsnd_cobalt_card_private_free() as sc->priva…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 85756a069c55e0315ac5990806899cfb607b987f < 75bbf45e3a954e292ae26832d2df40ca2e3ee452","Linux >= 85756a069c55e0315ac5990806899cfb607b987f < fe65028ee72a7e07e572b351891bd7a1f8917d33","Linux >= 85756a069c55e0315ac5990806899cfb607b987f < 61dfa8ded5efc3a25d331fa9ce5cebb85531fe70","Linux >= 85756a069c55e0315ac5990806899cfb607b987f < 42e00371f83c3fc7b99a36bf0229c74ad5d3c7d8","Linux >= 85756a069c55e0315ac5990806899cfb607b987f < 6cbc8a73b3464ebeccc49987b7233b6b087b8504","Linux >= 85756a069c55e0315ac5990806899cfb607b987f < cb1218da234ea15fa14d90e2d049d686874d7aa3","Linux >= 85756a069c55e0315ac5990806899cfb607b987f < 8c6610e230b9355cf7df5a338a0592c0f088c00b","Linux >= 85756a069c55e0315ac5990806899cfb607b987f < 3a7d6b9c4cb5ac18cbd3f1c7f8c7b159c42ba0b1","Linux 4.2"],"published":"2026-09-16","updated":"2026-09-16","sourceUpdated":"2026-09-16T11:16:58.270","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-89895","references":[{"url":"https://git.kernel.org/stable/c/3a7d6b9c4cb5ac18cbd3f1c7f8c7b159c42ba0b1","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/42e00371f83c3fc7b99a36bf0229c74ad5d3c7d8","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/61dfa8ded5efc3a25d331fa9ce5cebb85531fe70","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6cbc8a73b3464ebeccc49987b7233b6b087b8504","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/75bbf45e3a954e292ae26832d2df40ca2e3ee452","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8c6610e230b9355cf7df5a338a0592c0f088c00b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/cb1218da234ea15fa14d90e2d049d686874d7aa3","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/fe65028ee72a7e07e572b351891bd7a1f8917d33","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-16T10:53:53.980Z","epss":0.00211,"epssPercentile":0.11615,"slug":"CVE-2026-89895","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nmedia: cobalt: Avoid freeing ALSA private data twice\n\nsnd_cobalt_card_create() stores cobsc in sc->private_data and installs\nsnd_cobalt_card_private_free() as sc->private_free. From that point,\nsnd_card_free(sc) releases cobsc through the ALSA card cleanup path.\n\nIf cobalt_alsa_init() fails after snd_cobalt_card_create(), the\nerr_exit_free path calls snd_card_free(sc) and then kfree(cobsc). That\nsecond free releases the same object again.\n\nRemove the explicit kfree(cobsc) and leave ownership with the ALSA card.\n\nThis issue was found by a static analysis checker and confirmed by\nmanual source review.\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":[]}