CVE-2022-49291

Severity CVSS v4.0:

Pending analysis

Type:

CWE-416 Use After Free

Publication date:

26/02/2025

Last modified:

25/03/2025

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: Fix races among concurrent hw_params and hw_free calls Currently we have neither proper check nor protection against the concurrent calls of PCM hw_params and hw_free ioctls, which may result in a UAF. Since the existing PCM stream lock can&#39;t be used for protecting the whole ioctl operations, we need a new mutex to protect those racy calls. This patch introduced a new mutex, runtime->buffer_mutex, and applies it to both hw_params and hw_free ioctl code paths. Along with it, the both functions are slightly modified (the mmap_count check is moved into the state-check block) for code simplicity.

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

7.80

Severity 3.x

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::		4.14.279 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.15 (including)	4.19.243 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.20 (including)	5.4.193 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.5 (including)	5.10.109 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.11 (including)	5.15.32 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.16 (including)	5.16.18 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.17 (including)	5.17.1 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2022-49291

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools