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Red Hat: CVE-2024-38663: kernel: blk-cgroup: fix list corruption from resetting io stat (Multiple Advisories)

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Red Hat: CVE-2024-38663: kernel: blk-cgroup: fix list corruption from resetting io stat (Multiple Advisories)

Severity
4
CVSS
(AV:L/AC:L/Au:M/C:N/I:N/A:C)
Published
06/24/2024
Created
09/14/2024
Added
09/13/2024
Modified
09/13/2024

Description

In the Linux kernel, the following vulnerability has been resolved: blk-cgroup: fix list corruption from resetting io stat Since commit 3b8cc6298724 ("blk-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.

Solution(s)

  • redhat-upgrade-kernel
  • redhat-upgrade-kernel-rt

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