CVE-2022-49291

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Source
https://cve.org/CVERecord?id=CVE-2022-49291
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49291.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2022-49291
Downstream
Related
Published
2025-02-26T01:56:27.986Z
Modified
2026-04-11T12:43:51.019037Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
ALSA: pcm: Fix races among concurrent hw_params and hw_free calls
Details

In the Linux kernel, the following vulnerability has been resolved:

ALSA: pcm: Fix races among concurrent hwparams and hwfree calls

Currently we have neither proper check nor protection against the concurrent calls of PCM hwparams and hwfree ioctls, which may result in a UAF. Since the existing PCM stream lock can'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->buffermutex, and applies it to both hwparams and hwfree ioctl code paths. Along with it, the both functions are slightly modified (the mmapcount check is moved into the state-check block) for code simplicity.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49291.json",
    "cna_assigner": "Linux"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Fixed
a42aa926843acca96c0dfbde2e835b8137f2f092
Fixed
9cb6c40a6ebe4a0cfc9d6a181958211682cffea9
Fixed
fbeb492694ce0441053de57699e1e2b7bc148a69
Fixed
0f6947f5f5208f6ebd4d76a82a4757e2839a23f8
Fixed
33061d0fba51d2bf70a2ef9645f703c33fe8e438
Fixed
0090c13cbbdffd7da079ac56f80373a9a1be0bf8
Fixed
1bbf82d9f961414d6c76a08f7f843ea068e0ab7b
Fixed
92ee3c60ec9fe64404dc035e7c41277d74aa26cb

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49291.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
2.6.12
Fixed
4.14.279
Type
ECOSYSTEM
Events
Introduced
4.15.0
Fixed
4.19.243
Type
ECOSYSTEM
Events
Introduced
4.20.0
Fixed
5.4.193
Type
ECOSYSTEM
Events
Introduced
5.5.0
Fixed
5.10.109
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.32
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
5.16.18
Type
ECOSYSTEM
Events
Introduced
5.17.0
Fixed
5.17.1

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49291.json"