CVE-2024-38663 Information

Description

In the Linux kernel the following vulnerability has been resolved:

blk-cgroup: fix list corruption from resetting io stat

Since commit 3b8cc6298724 (lk-cgroup: Optimize blkcg_rstat_flush()) each iostat instance is added to blkcg percpu list so blkcg_reset_stats() can’t reset the stat instance by memset() otherwise the llist may be corrupted.

Fix the issue by only resetting the counter part.

Reference

https://git.kernel.org/stable/c/d4a60298ac34f027a09f8f893fdbd9e06279bb24 https://git.kernel.org/stable/c/89bb36c72e1951843f9e04dc84412e31fcc849a9 https://git.kernel.org/stable/c/6da6680632792709cecf2b006f2fe3ca7857e791