CVE-2024-38618
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2024-38618
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-38618.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2024-38618
- Downstream
- Related
- Published
- 2024-06-19T14:15:21Z
- Modified
- 2025-10-03T16:07:18Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/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: timer: Set lower bound of start tick time
Currently ALSA timer doesn't have the lower limit of the start tick time, and it allows a very small size, e.g. 1 tick with 1ns resolution for hrtimer. Such a situation may lead to an unexpected RCU stall, where the callback repeatedly queuing the expire update, as reported by fuzzer.
This patch introduces a sanity check of the timer start tick time, so that the system returns an error when a too small start size is set. As of this patch, the lower limit is hard-coded to 100us, which is small enough but can still work somehow.
- References
-
- https://git.kernel.org/stable/c/2c95241ac5fc90c929d6c0c023e84bf0d30e84c3
- https://git.kernel.org/stable/c/4a63bd179fa8d3fcc44a0d9d71d941ddd62f0c4e
- https://git.kernel.org/stable/c/68396c825c43664b20a3a1ba546844deb2b4e48f
- https://git.kernel.org/stable/c/74bfb8d90f2601718ae203faf45a196844c01fa1
- https://git.kernel.org/stable/c/83f0ba8592b9e258fd80ac6486510ab1dcd7ad6e
- https://git.kernel.org/stable/c/abb1ad69d98cf1ff25bb14fff0e7c3f66239e1cd
- https://git.kernel.org/stable/c/bdd0aa055b8ec7e24bbc19513f3231958741d0ab
- https://git.kernel.org/stable/c/ceab795a67dd28dd942d0d8bba648c6c0f7a044b