media: cobalt: Avoid freeing ALSA private data twice

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-89895
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-16 11:16:58 UTC
Updated2026-09-16 11:16:58 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: media: cobalt: Avoid freeing ALSA private data twice snd_cobalt_card_create() stores cobsc in sc->private_data and installs snd_cobalt_card_private_free() as sc->private_free. From that point, snd_card_free(sc) releases cobsc through the ALSA card cleanup path. If cobalt_alsa_init() fails after snd_cobalt_card_create(), the err_exit_free path calls snd_card_free(sc) and then kfree(cobsc). That second free releases the same object again. Remove the explicit kfree(cobsc) and leave ownership with the ALSA card. This issue was found by a static analysis checker and confirmed by manual source review.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 85756a069c55e0315ac5990806899cfb607b987f 75bbf45e3a954e292ae26832d2df40ca2e3ee452 git Not specified
CNA Linux Linux affected 85756a069c55e0315ac5990806899cfb607b987f fe65028ee72a7e07e572b351891bd7a1f8917d33 git Not specified
CNA Linux Linux affected 85756a069c55e0315ac5990806899cfb607b987f 61dfa8ded5efc3a25d331fa9ce5cebb85531fe70 git Not specified
CNA Linux Linux affected 85756a069c55e0315ac5990806899cfb607b987f 42e00371f83c3fc7b99a36bf0229c74ad5d3c7d8 git Not specified
CNA Linux Linux affected 85756a069c55e0315ac5990806899cfb607b987f 6cbc8a73b3464ebeccc49987b7233b6b087b8504 git Not specified
CNA Linux Linux affected 85756a069c55e0315ac5990806899cfb607b987f cb1218da234ea15fa14d90e2d049d686874d7aa3 git Not specified
CNA Linux Linux affected 85756a069c55e0315ac5990806899cfb607b987f 8c6610e230b9355cf7df5a338a0592c0f088c00b git Not specified
CNA Linux Linux affected 85756a069c55e0315ac5990806899cfb607b987f 3a7d6b9c4cb5ac18cbd3f1c7f8c7b159c42ba0b1 git Not specified
CNA Linux Linux affected 4.2 Not specified
CNA Linux Linux unaffected 4.2 semver Not specified
CNA Linux Linux unaffected 5.10.270 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.221 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.188 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.157 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.110 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.51 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.5 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/75bbf45e3a954e292ae26832d2df40ca2e3ee452 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/cb1218da234ea15fa14d90e2d049d686874d7aa3 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/8c6610e230b9355cf7df5a338a0592c0f088c00b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/61dfa8ded5efc3a25d331fa9ce5cebb85531fe70 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/fe65028ee72a7e07e572b351891bd7a1f8917d33 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/3a7d6b9c4cb5ac18cbd3f1c7f8c7b159c42ba0b1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/42e00371f83c3fc7b99a36bf0229c74ad5d3c7d8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/6cbc8a73b3464ebeccc49987b7233b6b087b8504 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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