CVE-2022-49288
ALSA: pcm: Fix races among concurrent prealloc proc writes
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: total
Summary
In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: Fix races among concurrent prealloc proc writes We have no protection against concurrent PCM buffer preallocation changes via proc files, and it may potentially lead to UAF or some weird problem. This patch applies the PCM open_mutex to the proc write operation for avoiding the racy proc writes and the PCM stream open (and further operations).
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
2.6.12
References 8
git.kernel.org
- stable/c/e7786c445bb67a9a6e64f66ebd6b7215b153ff7d
- stable/c/e14dca613e0a6ddc2bf6e360f16936a9f865205b
- stable/c/37b12c16beb6f6c1c3c678c1aacbc46525c250f7
- stable/c/b560d670c87d7d40b3cf6949246fa4c7aa65a00a
- stable/c/51fce708ab8986a9879ee5da946a2cc120f1036d
- stable/c/a21d2f323b5a978dedf9ff1d50f101f85e39b3f2
- stable/c/5ed8f8e3c4e59d0396b9ccf2e639711e24295bb6
- stable/c/69534c48ba8ce552ce383b3dfdb271ffe51820c3