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Red Hat: CVE-2024-26602: kernel: sched/membarrier: reduce the ability to hammer on sys_membarrier (Multiple Advisories)

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Red Hat: CVE-2024-26602: kernel: sched/membarrier: reduce the ability to hammer on sys_membarrier (Multiple Advisories)

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
02/26/2024
Created
03/14/2024
Added
03/13/2024
Modified
06/14/2024

Description

In the Linux kernel, the following vulnerability has been resolved: sched/membarrier: reduce the ability to hammer on sys_membarrier On some systems, sys_membarrier can be very expensive, causing overall slowdowns for everything. So put a lock on the path in order to serialize the accesses to prevent the ability for this to be called at too high of a frequency and saturate the machine.

Solution(s)

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

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