ALSA: ac97: fix a double free in snd_ac97_controller_register()

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2025-71192
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-02-04 16:16:18 UTC
Updated2026-07-30 06:24:55 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: ALSA: ac97: fix a double free in snd_ac97_controller_register() If ac97_add_adapter() fails, put_device() is the correct way to drop the device reference. kfree() is not required. Add kfree() if idr_alloc() fails and in ac97_adapter_release() to do the cleanup. Found by code review.

Risk And Classification

Primary CVSS: v3.1 7 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.001130000 probability, percentile 0.016680000 (date 2026-08-01)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED7HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 74426fbff66eea8e8d1f42c8238c268d1e63a832 c80f9b3349a99a9d5b295f5bbc23f544c5995ad7 git Not specified
CNA Linux Linux affected 74426fbff66eea8e8d1f42c8238c268d1e63a832 21f8bc5179bed91c3f946adb5e55d717b891960c git Not specified
CNA Linux Linux affected 74426fbff66eea8e8d1f42c8238c268d1e63a832 fcc04c92cbb5497ce67c58dd2f0001bb87f40396 git Not specified
CNA Linux Linux affected 74426fbff66eea8e8d1f42c8238c268d1e63a832 cb73d37ac18bc1716690ff5255a0ef1952827e9e git Not specified
CNA Linux Linux affected 74426fbff66eea8e8d1f42c8238c268d1e63a832 830988b6cf197e6dcffdfe2008c5738e6c6c3c0f git Not specified
CNA Linux Linux affected 4.15 Not specified
CNA Linux Linux unaffected 4.15 semver Not specified
CNA Linux Linux unaffected 6.1.161 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.121 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.66 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.6 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/c80f9b3349a99a9d5b295f5bbc23f544c5995ad7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/fcc04c92cbb5497ce67c58dd2f0001bb87f40396 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/cb73d37ac18bc1716690ff5255a0ef1952827e9e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/21f8bc5179bed91c3f946adb5e55d717b891960c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/830988b6cf197e6dcffdfe2008c5738e6c6c3c0f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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