media: cobalt: Avoid freeing ALSA private data twice
In 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.
CVE-2026-89895
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-89895
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "85756a069c55e0315ac5990806899cfb607b987f",
"lessThan": "75bbf45e3a954e292ae26832d2df40ca2e3ee452",
"versionType": "git"
},
{
"status": "affected",
"version": "85756a069c55e0315ac5990806899cfb607b987f",
"lessThan": "fe65028ee72a7e07e572b351891bd7a1f8917d33",
"versionType": "git"
},
{
"status": "affected",
"version": "85756a069c55e0315ac5990806899cfb607b987f",
"lessThan": "61dfa8ded5efc3a25d331fa9ce5cebb85531fe70",
"versionType": "git"
},
{
"status": "affected",
"version": "85756a069c55e0315ac5990806899cfb607b987f",
"lessThan": "42e00371f83c3fc7b99a36bf0229c74ad5d3c7d8",
"versionType": "git"
},
{
"status": "affected",
"version": "85756a069c55e0315ac5990806899cfb607b987f",
"lessThan": "6cbc8a73b3464ebeccc49987b7233b6b087b8504",
"versionType": "git"
},
{
"status": "affected",
"version": "85756a069c55e0315ac5990806899cfb607b987f",
"lessThan": "cb1218da234ea15fa14d90e2d049d686874d7aa3",
"versionType": "git"
},
{
"status": "affected",
"version": "85756a069c55e0315ac5990806899cfb607b987f",
"lessThan": "8c6610e230b9355cf7df5a338a0592c0f088c00b",
"versionType": "git"
},
{
"status": "affected",
"version": "85756a069c55e0315ac5990806899cfb607b987f",
"lessThan": "3a7d6b9c4cb5ac18cbd3f1c7f8c7b159c42ba0b1",
"versionType": "git"
}
],
"programFiles": [
"drivers/media/pci/cobalt/cobalt-alsa-main.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.2"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.2",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.270",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.221",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.188",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.110",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.51",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.5",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/media/pci/cobalt/cobalt-alsa-main.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-89895
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #36345 · Revision 1
- Added to Heist Feed
- Publisher date