vulnerability

Red Hat: CVE-2023-52859: kernel: perf: hisi: Fix use-after-free when register pmu fails (Multiple Advisories)

Severity
6
CVSS
(AV:L/AC:L/Au:M/C:C/I:N/A:C)
Published
May 21, 2024
Added
Dec 5, 2024
Modified
Aug 11, 2025

Description

In the Linux kernel, the following vulnerability has been resolved:

perf: hisi: Fix use-after-free when register pmu fails

When we fail to register the uncore pmu, the pmu context may not been
allocated. The error handing will call cpuhp_state_remove_instance()
to call uncore pmu offline callback, which migrate the pmu context.
Since that's liable to lead to some kind of use-after-free.

Use cpuhp_state_remove_instance_nocalls() instead of
cpuhp_state_remove_instance() so that the notifiers don't execute after
the PMU device has been failed to register.

Solutions

no-fix-redhat-rpm-packageredhat-upgrade-kernelredhat-upgrade-kernel-rt
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