CVE-2024-44954
ALSA: line6: Fix racy access to midibuf
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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: partial
Summary
In the Linux kernel, the following vulnerability has been resolved: ALSA: line6: Fix racy access to midibuf There can be concurrent accesses to line6 midibuf from both the URB completion callback and the rawmidi API access. This could be a cause of KMSAN warning triggered by syzkaller below (so put as reported-by here). This patch protects the midibuf call of the former code path with a spinlock for avoiding the possible races.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
2.6.30
References 8
git.kernel.org
- stable/c/643293b68fbb6c03f5e907736498da17d43f0d81
- stable/c/40f3d5cb0e0cbf7fa697913a27d5d361373bdcf5
- stable/c/e7e7d2b180d8f297cea6db43ea72402fd33e1a29
- stable/c/a54da4b787dcac60b598da69c9c0072812b8282d
- stable/c/c80f454a805443c274394b1db0d1ebf477abd94e
- stable/c/535df7f896a568a8a1564114eaea49d002cb1747
- stable/c/51d87f11dd199bbc6a85982b088ff27bde53b48a
- stable/c/15b7a03205b31bc5623378c190d22b7ff60026f1