Review reviewHigh

CVE-2025-71192

Linux

In 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.

CVSS: 7
EPSS: 0.11%
CISA KEV: Not listed
Published: 2026.02.05

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.11%

Technical severityCVSS 7

Vulnerability overview

Affected product and versions

Product: Linux
Affected versions: >= 74426fbff66eea8e8d1f42c8238c268d1e63a832 < c80f9b3349a99a9d5b295f5bbc23f544c5995ad7, >= 74426fbff66eea8e8d1f42c8238c268d1e63a832 < 21f8bc5179bed91c3f946adb5e55d717b891960c, >= 74426fbff66eea8e8d1f42c8238c268d1e63a832 < fcc04c92cbb5497ce67c58dd2f0001bb87f40396, >= 74426fbff66eea8e8d1f42c8238c268d1e63a832 < cb73d37ac18bc1716690ff5255a0ef1952827e9e, >= 74426fbff66eea8e8d1f42c8238c268d1e63a832 < 830988b6cf197e6dcffdfe2008c5738e6c6c3c0f, >= 4.15
Fixed versions: No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that Linux and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE: Not available