CVE-2022-49733

MEDIUM EPSS 3.1%
Published Mar 2, 20251y ago · Modified Jun 17, 20261w ago
4.7 CVSS 3.1
Medium
Find Similar
Published Mar 2, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: oss: Fix race at SNDCTL_DSP_SYNC There is a small race window at snd_pcm_oss_sync() that is called from OSS PCM SNDCTL_DSP_SYNC ioctl; namely the function calls snd_pcm_oss_make_ready() at first, then takes the params_lock mutex for the rest. When the stream is set up again by another thread between them, it leads to inconsistency, and may result in unexpected results such as NULL dereference of OSS buffer as a fuzzer spotted recently. The fix is simply to cover snd_pcm_oss_make_ready() call into the same params_lock mutex with snd_pcm_oss_make_ready_locked() variant.

CVSS Details

Base Score
4.7
Exploitability
1.0
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity High
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
3.1% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 2

CWE-362
CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 8

VendorProductVersionRange
linuxlinux_kernel* <5.4.215
linuxlinux_kernel*≥5.5  –  <5.10.148
linuxlinux_kernel*≥5.11  –  <5.15.68
linuxlinux_kernel*≥5.16  –  <5.19.9
linuxlinux_kernel6.0any
linuxlinux_kernel6.0any
linuxlinux_kernel6.0any
linuxlinux_kernel6.0any

References 5

  • git.kernel.org https://git.kernel.org/stable/c/4051324a6dafd7053c74c475e80b3ba10ae672b0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/723ac5ab2891b6c10dd6cc78ef5456af593490eb
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8015ef9e8a0ee5cecfd0cb6805834d007ab26f86
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8423f0b6d513b259fdab9c9bf4aaa6188d054c2d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fce793a056c604b41a298317cf704dae255f1b36
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/4051324a6dafd7053c74c475e80b3ba10ae672b0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/723ac5ab2891b6c10dd6cc78ef5456af593490eb
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8015ef9e8a0ee5cecfd0cb6805834d007ab26f86
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8423f0b6d513b259fdab9c9bf4aaa6188d054c2d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fce793a056c604b41a298317cf704dae255f1b36
    Patch