CVE-2023-52672
In the Linux kernel, the following vulnerability has been resolved: pipe: wakeup wr_wait after setting max_usage Commit c73be61cede5 ("pipe: Add general notification queue support") a regression was introduced that would lock up resized pipes under…
Does this matter?
Lower severity and a low EPSS score (0.26%). Track it; it rarely justifies an emergency change on its own.
Description
In the Linux kernel, the following vulnerability has been resolved: pipe: wakeup wr_wait after setting max_usage Commit c73be61cede5 ("pipe: Add general notification queue support") a regression was introduced that would lock up resized pipes under certain conditions. See the reproducer in [1]. The commit resizing the pipe ring size was moved to a different function, doing that moved the wakeup for pipe->wr_wait before actually raising pipe->max_usage. If a pipe was full before the resize occured it would result in the wakeup never actually triggering pipe_write. Set @max_usage and @nr_accounted before waking writers if this isn't a watch queue. [Christian Brauner <brauner@kernel.org>: rewrite to account for watch queues]
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.26% probability · 17th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-400
- Affected
- linux/linux kernel · debian/debian linux
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/162ae0e78bdabf84ef10c1293c4ed7865cb7d3c8Patch
- https://git.kernel.org/stable/c/3efbd114b91525bb095b8ae046382197d92126b9Patch
- https://git.kernel.org/stable/c/68e51bdb1194f11d3452525b99c98aff6f837b24Patch
- https://git.kernel.org/stable/c/6fb70694f8d1ac34e45246b0ac988f025e1e5b55Patch
- https://git.kernel.org/stable/c/b87a1229d8668fbc78ebd9ca0fc797a76001c60fPatch
- https://git.kernel.org/stable/c/e95aada4cb93d42e25c30a0ef9eb2923d9711d4aPatch
- https://git.kernel.org/stable/c/162ae0e78bdabf84ef10c1293c4ed7865cb7d3c8Patch
- https://git.kernel.org/stable/c/3efbd114b91525bb095b8ae046382197d92126b9Patch
- https://git.kernel.org/stable/c/68e51bdb1194f11d3452525b99c98aff6f837b24Patch
- https://git.kernel.org/stable/c/6fb70694f8d1ac34e45246b0ac988f025e1e5b55Patch
- https://git.kernel.org/stable/c/b87a1229d8668fbc78ebd9ca0fc797a76001c60fPatch
- https://git.kernel.org/stable/c/e95aada4cb93d42e25c30a0ef9eb2923d9711d4aPatch
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.