CVE-2023-52672

high

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 <[email protected]>: rewrite to account for watch queues]

References

https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html

https://git.kernel.org/stable/c/e95aada4cb93d42e25c30a0ef9eb2923d9711d4a

https://git.kernel.org/stable/c/b87a1229d8668fbc78ebd9ca0fc797a76001c60f

https://git.kernel.org/stable/c/6fb70694f8d1ac34e45246b0ac988f025e1e5b55

https://git.kernel.org/stable/c/68e51bdb1194f11d3452525b99c98aff6f837b24

https://git.kernel.org/stable/c/3efbd114b91525bb095b8ae046382197d92126b9

https://git.kernel.org/stable/c/162ae0e78bdabf84ef10c1293c4ed7865cb7d3c8

Details

Source: Mitre, NVD

Published: 2024-05-17

Updated: 2024-07-03

Risk Information

CVSS v2

Base Score: 4.6

Vector: CVSS2#AV:L/AC:L/Au:S/C:N/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 7

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High