CVE-2024-35952 Affecting perf package, versions <0:4.18.0-553.16.1.el8_10
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Test your applications- Snyk ID SNYK-RHEL8-PERF-6945000
- published 21 May 2024
- disclosed 20 May 2024
Introduced: 20 May 2024
CVE-2024-35952 Open this link in a new tabHow to fix?
Upgrade RHEL:8 perf to version 0:4.18.0-553.16.1.el8_10 or higher.
This issue was patched in RHSA-2024:5101.
NVD Description
Note: Versions mentioned in the description apply only to the upstream perf package and not the perf package as distributed by RHEL.
See How to fix? for RHEL:8 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
drm/ast: Fix soft lockup
There is a while-loop in ast_dp_set_on_off() that could lead to infinite-loop. This is because the register, VGACRI-Dx, checked in this API is a scratch register actually controlled by a MCU, named DPMCU, in BMC.
These scratch registers are protected by scu-lock. If suc-lock is not off, DPMCU can not update these registers and then host will have soft lockup due to never updated status.
DPMCU is used to control DP and relative registers to handshake with host's VGA driver. Even the most time-consuming task, DP's link training, is less than 100ms. 200ms should be enough.
References
- https://access.redhat.com/security/cve/CVE-2024-35952
- https://git.kernel.org/stable/c/35768baf0fdfc47ede42d899506bad78450e9294
- https://git.kernel.org/stable/c/8a6fea3fcb577a543ef67683ca7105bde49a38fb
- https://git.kernel.org/stable/c/a81b2acd43e24e419f65df97348c76a5a1496066
- https://git.kernel.org/stable/c/bc004f5038220b1891ef4107134ccae44be55109