Description
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.
Metrics
CVSS 3.1 5.5/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HAffected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= bbaf5e97337287479eb78dbc3822d9560bbfd2e2, < 68396c825c43664b20a3a1ba546844deb2b4e48f; >= bbaf5e97337287479eb78dbc3822d9560bbfd2e2, < 74bfb8d90f2601718ae203faf45a196844c01fa1; >= bbaf5e97337287479eb78dbc3822d9560bbfd2e2, < bdd0aa055b8ec7e24bbc19513f3231958741d0ab; >= bbaf5e97337287479eb78dbc3822d9560bbfd2e2, < 83f0ba8592b9e258fd80ac6486510ab1dcd7ad6e; >= bbaf5e97337287479eb78dbc3822d9560bbfd2e2, < ceab795a67dd28dd942d0d8bba648c6c0f7a044b; >= bbaf5e97337287479eb78dbc3822d9560bbfd2e2, < 2c95241ac5fc90c929d6c0c023e84bf0d30e84c3; >= bbaf5e97337287479eb78dbc3822d9560bbfd2e2, < abb1ad69d98cf1ff25bb14fff0e7c3f66239e1cd; >= bbaf5e97337287479eb78dbc3822d9560bbfd2e2, < 4a63bd179fa8d3fcc44a0d9d71d941ddd62f0c4e |
| Linux | Linux | 2.6.29 |
References
- https://git.kernel.org/stable/c/2c95241ac5fc90c929d6c0c023e84bf0d30e84c3Patch
- https://git.kernel.org/stable/c/4a63bd179fa8d3fcc44a0d9d71d941ddd62f0c4ePatch
- https://git.kernel.org/stable/c/68396c825c43664b20a3a1ba546844deb2b4e48fPatch
- https://git.kernel.org/stable/c/74bfb8d90f2601718ae203faf45a196844c01fa1Patch
- https://git.kernel.org/stable/c/83f0ba8592b9e258fd80ac6486510ab1dcd7ad6ePatch
- https://git.kernel.org/stable/c/abb1ad69d98cf1ff25bb14fff0e7c3f66239e1cdPatch
- https://git.kernel.org/stable/c/bdd0aa055b8ec7e24bbc19513f3231958741d0abPatch
- https://git.kernel.org/stable/c/ceab795a67dd28dd942d0d8bba648c6c0f7a044bPatch
- https://git.kernel.org/stable/c/2c95241ac5fc90c929d6c0c023e84bf0d30e84c3Patch
- https://git.kernel.org/stable/c/4a63bd179fa8d3fcc44a0d9d71d941ddd62f0c4ePatch
- https://git.kernel.org/stable/c/68396c825c43664b20a3a1ba546844deb2b4e48fPatch
- https://git.kernel.org/stable/c/74bfb8d90f2601718ae203faf45a196844c01fa1Patch
- https://git.kernel.org/stable/c/83f0ba8592b9e258fd80ac6486510ab1dcd7ad6ePatch
- https://git.kernel.org/stable/c/abb1ad69d98cf1ff25bb14fff0e7c3f66239e1cdPatch
- https://git.kernel.org/stable/c/bdd0aa055b8ec7e24bbc19513f3231958741d0abPatch
- https://git.kernel.org/stable/c/ceab795a67dd28dd942d0d8bba648c6c0f7a044bPatch
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
Timeline
- Published
- Jun 19, 2024
- Last modified
- Jun 17, 2026
- NVD status
- Modified