CVE-2022-49733

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Source
https://nvd.nist.gov/vuln/detail/CVE-2022-49733
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49733.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2022-49733
Downstream
Related
Published
2025-03-02T15:15:11Z
Modified
2025-10-01T20:17:09Z
Severity
  • 4.7 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

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

ALSA: pcm: oss: Fix race at SNDCTLDSPSYNC

There is a small race window at sndpcmosssync() that is called from OSS PCM SNDCTLDSPSYNC ioctl; namely the function calls sndpcmossmakeready() at first, then takes the paramslock 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 sndpcmossmakeready() call into the same paramslock mutex with sndpcmossmakereadylocked() variant.

References

Affected packages