Skip to content
Heist/ feed
Unrated

media: cobalt: Avoid freeing ALSA private data twice

Type: advisorySource: Official CVE List1 source record

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.

Announced Source revision 1
Original source ↗

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
Read the original announcement