CVE-2024-57893: Linux kernel · Race Condition
Source GCVE Database
Not known to be exploited · CVSS 6.3 Medium.
Data as of 30 Oct 2026, 00:59 UTC
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 15 Jan 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
What to do
AI-suggested
A temporary fix has been applied by introducing a mutex to serialize the processing of SysEx message packets, reducing the race condition risk. Since this is a local vulnerability, limiting untrusted local access can reduce risk.
Description
CVE-2024-57893 is a race condition vulnerability in the Linux kernel's ALSA OSS sequencer component when processing SysEx messages. The issue arises because the OSS sequencer handles SysEx messages split into 6-byte packets, and the ALSA OSS layer combines these packets using an internal buffer without proper synchronization. This race condition can lead to out-of-bounds memory access. A temporary fix introduces a mutex to serialize processing of these packets.
References
- nvd.nist.gov/vuln/detail/CVE-2024-57893 (opens in a new tab)
- git.kernel.org/stable/c/0179488ca992d79908b8e26b9213f1554fc5bacc (opens in a new tab)
- git.kernel.org/stable/c/9d382112b36382aa65aad765f189ebde9926c101 (opens in a new tab)
- git.kernel.org/stable/c/cff1de87ed14fc0f2332213d2367100e7ad0753a (opens in a new tab)
- git.kernel.org/stable/c/d2392b79d8af3714ea8878b71c66dc49d3110f44 (opens in a new tab)
- lists.debian.org/debian-lts-announce/2025/03/msg00001.html (opens in a new tab)