CVE-2026-23089 (GCVE-0-2026-23089)

Vulnerability from cvelistv5 – Published: 2026-02-04 16:08 – Updated: 2026-06-11 18:44
VLAI
Title
ALSA: usb-audio: Fix use-after-free in snd_usb_mixer_free()
Summary
In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Fix use-after-free in snd_usb_mixer_free() When snd_usb_create_mixer() fails, snd_usb_mixer_free() frees mixer->id_elems but the controls already added to the card still reference the freed memory. Later when snd_card_register() runs, the OSS mixer layer calls their callbacks and hits a use-after-free read. Call trace: get_ctl_value+0x63f/0x820 sound/usb/mixer.c:411 get_min_max_with_quirks.isra.0+0x240/0x1f40 sound/usb/mixer.c:1241 mixer_ctl_feature_info+0x26b/0x490 sound/usb/mixer.c:1381 snd_mixer_oss_build_test+0x174/0x3a0 sound/core/oss/mixer_oss.c:887 ... snd_card_register+0x4ed/0x6d0 sound/core/init.c:923 usb_audio_probe+0x5ef/0x2a90 sound/usb/card.c:1025 Fix by calling snd_ctl_remove() for all mixer controls before freeing id_elems. We save the next pointer first because snd_ctl_remove() frees the current element.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 6639b6c2367f884ca172b78d69f7da17bfab2e5e , < 51b1aa6fe7dc87356ba58df06afb9677c9b841ea (git)
Affected: 6639b6c2367f884ca172b78d69f7da17bfab2e5e , < 56fb6efd5d04caf6f14994d51ec85393b9a896c6 (git)
Affected: 6639b6c2367f884ca172b78d69f7da17bfab2e5e , < 7009daeefa945973a530b2f605fe445fc03747af (git)
Affected: 6639b6c2367f884ca172b78d69f7da17bfab2e5e , < 7bff0156d13f0ad9436e5178b979b063d59f572a (git)
Affected: 6639b6c2367f884ca172b78d69f7da17bfab2e5e , < e6f103a22b08daf5df2f4aa158081840e5910963 (git)
Affected: 6639b6c2367f884ca172b78d69f7da17bfab2e5e , < dc1a5dd80af1ee1f29d8375b12dd7625f6294dad (git)
Affected: 6639b6c2367f884ca172b78d69f7da17bfab2e5e , < 930e69757b74c3ae083b0c3c7419bfe7f0edc7b2 (git)
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Linux Linux Affected: 2.6.13
Unaffected: 0 , < 2.6.13 (semver)
Unaffected: 5.10.249 , ≤ 5.10.* (semver)
Unaffected: 5.15.199 , ≤ 5.15.* (semver)
Unaffected: 6.1.162 , ≤ 6.1.* (semver)
Unaffected: 6.6.122 , ≤ 6.6.* (semver)
Unaffected: 6.12.68 , ≤ 6.12.* (semver)
Unaffected: 6.18.8 , ≤ 6.18.* (semver)
Unaffected: 6.19 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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Later when snd_card_register() runs,\\nthe OSS mixer layer calls their callbacks and hits a use-after-free read.\\n\\nCall trace:\\n  get_ctl_value+0x63f/0x820 sound/usb/mixer.c:411\\n  get_min_max_with_quirks.isra.0+0x240/0x1f40 sound/usb/mixer.c:1241\\n  mixer_ctl_feature_info+0x26b/0x490 sound/usb/mixer.c:1381\\n  snd_mixer_oss_build_test+0x174/0x3a0 sound/core/oss/mixer_oss.c:887\\n  ...\\n  snd_card_register+0x4ed/0x6d0 sound/core/init.c:923\\n  usb_audio_probe+0x5ef/0x2a90 sound/usb/card.c:1025\\n\\nFix by calling snd_ctl_remove() for all mixer controls before freeing\\nid_elems. We save the next pointer first because snd_ctl_remove()\\nfrees the current element.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad:\\n\\nALSA: usb-audio: Correcci\u00f3n de uso despu\u00e9s de liberaci\u00f3n en snd_usb_mixer_free()\\n\\nCuando snd_usb_create_mixer() falla, snd_usb_mixer_free() libera mixer-\u0026gt;id_elems, pero los controles ya a\u00f1adidos a la tarjeta siguen referenciando la memoria liberada. 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Guardamos el siguiente puntero primero porque snd_ctl_remove() libera el elemento actual.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.6.13\",\"versionEndExcluding\":\"5.10.249\",\"matchCriteriaId\":\"FF8E9F0D-F0AD-45F3-935B-FCC837066EC9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.199\",\"matchCriteriaId\":\"A247FBA6-BEB9-484F-B892-DD5517949CCD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.162\",\"matchCriteriaId\":\"6579E0D4-0641-479D-A4C3-0EF618798C55\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.122\",\"matchCriteriaId\":\"8EAAE395-0162-4BAF-9AD5-E9AF3C869C4F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.68\",\"matchCriteriaId\":\"52F38E19-0FDD-4992-9D6D-D4169D689598\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.18.8\",\"matchCriteriaId\":\"E65C6E79-7EBE-4C77-93F0-818CF5B38F4E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"17B67AA7-40D6-4AFA-8459-F200F3D7CFD1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"C47E4CC9-C826-4FA9-B014-7FE3D9B318B2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"F71D92C0-C023-48BD-B3B6-70B638EEE298\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"13580667-0A98-40CC-B29F-D12790B91BDB\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"CAD1FED7-CF48-47BF-AC7D-7B6FA3C065FC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc6:*:*:*:*:*:*\",\"matchCriteriaId\":\"3EF854A1-ABB1-4E93-BE9A-44569EC76C0D\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/51b1aa6fe7dc87356ba58df06afb9677c9b841ea\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/56fb6efd5d04caf6f14994d51ec85393b9a896c6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/7009daeefa945973a530b2f605fe445fc03747af\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/7bff0156d13f0ad9436e5178b979b063d59f572a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/930e69757b74c3ae083b0c3c7419bfe7f0edc7b2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/dc1a5dd80af1ee1f29d8375b12dd7625f6294dad\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e6f103a22b08daf5df2f4aa158081840e5910963\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-23089\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-06-10T20:40:33.270292Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-06-11T17:37:25.707Z\"}}], \"cna\": {\"title\": \"ALSA: usb-audio: Fix use-after-free in snd_usb_mixer_free()\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6639b6c2367f884ca172b78d69f7da17bfab2e5e\", \"lessThan\": \"51b1aa6fe7dc87356ba58df06afb9677c9b841ea\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"6639b6c2367f884ca172b78d69f7da17bfab2e5e\", \"lessThan\": \"56fb6efd5d04caf6f14994d51ec85393b9a896c6\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"6639b6c2367f884ca172b78d69f7da17bfab2e5e\", \"lessThan\": \"7009daeefa945973a530b2f605fe445fc03747af\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"6639b6c2367f884ca172b78d69f7da17bfab2e5e\", \"lessThan\": \"7bff0156d13f0ad9436e5178b979b063d59f572a\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"6639b6c2367f884ca172b78d69f7da17bfab2e5e\", \"lessThan\": \"e6f103a22b08daf5df2f4aa158081840e5910963\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"6639b6c2367f884ca172b78d69f7da17bfab2e5e\", \"lessThan\": \"dc1a5dd80af1ee1f29d8375b12dd7625f6294dad\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"6639b6c2367f884ca172b78d69f7da17bfab2e5e\", \"lessThan\": \"930e69757b74c3ae083b0c3c7419bfe7f0edc7b2\", \"versionType\": \"git\"}], \"programFiles\": [\"sound/usb/mixer.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"2.6.13\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"2.6.13\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.10.249\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.199\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.162\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.122\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12.68\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.12.*\"}, {\"status\": \"unaffected\", \"version\": \"6.18.8\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.18.*\"}, {\"status\": \"unaffected\", \"version\": \"6.19\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"sound/usb/mixer.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/51b1aa6fe7dc87356ba58df06afb9677c9b841ea\"}, {\"url\": \"https://git.kernel.org/stable/c/56fb6efd5d04caf6f14994d51ec85393b9a896c6\"}, {\"url\": \"https://git.kernel.org/stable/c/7009daeefa945973a530b2f605fe445fc03747af\"}, {\"url\": \"https://git.kernel.org/stable/c/7bff0156d13f0ad9436e5178b979b063d59f572a\"}, {\"url\": \"https://git.kernel.org/stable/c/e6f103a22b08daf5df2f4aa158081840e5910963\"}, {\"url\": \"https://git.kernel.org/stable/c/dc1a5dd80af1ee1f29d8375b12dd7625f6294dad\"}, {\"url\": \"https://git.kernel.org/stable/c/930e69757b74c3ae083b0c3c7419bfe7f0edc7b2\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nALSA: usb-audio: Fix use-after-free in snd_usb_mixer_free()\\n\\nWhen snd_usb_create_mixer() fails, snd_usb_mixer_free() frees\\nmixer-\u003eid_elems but the controls already added to the card still\\nreference the freed memory. Later when snd_card_register() runs,\\nthe OSS mixer layer calls their callbacks and hits a use-after-free read.\\n\\nCall trace:\\n  get_ctl_value+0x63f/0x820 sound/usb/mixer.c:411\\n  get_min_max_with_quirks.isra.0+0x240/0x1f40 sound/usb/mixer.c:1241\\n  mixer_ctl_feature_info+0x26b/0x490 sound/usb/mixer.c:1381\\n  snd_mixer_oss_build_test+0x174/0x3a0 sound/core/oss/mixer_oss.c:887\\n  ...\\n  snd_card_register+0x4ed/0x6d0 sound/core/init.c:923\\n  usb_audio_probe+0x5ef/0x2a90 sound/usb/card.c:1025\\n\\nFix by calling snd_ctl_remove() for all mixer controls before freeing\\nid_elems. We save the next pointer first because snd_ctl_remove()\\nfrees the current element.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.249\", \"versionStartIncluding\": \"2.6.13\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.199\", \"versionStartIncluding\": \"2.6.13\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.162\", \"versionStartIncluding\": \"2.6.13\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.122\", \"versionStartIncluding\": \"2.6.13\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12.68\", \"versionStartIncluding\": \"2.6.13\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.18.8\", \"versionStartIncluding\": \"2.6.13\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.19\", \"versionStartIncluding\": \"2.6.13\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T21:59:47.264Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-23089\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-06-11T18:44:02.838Z\", \"dateReserved\": \"2026-01-13T15:37:45.962Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2026-02-04T16:08:12.575Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.