5.5

CVE-2024-35952

drm/ast: Fix soft lockup

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.19 < 6.1.87
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.28
Linux ≫ Linux Kernel Version >= 6.7 < 6.8.7
Linux ≫ Linux Kernel Version6.9 Updaterc1
Linux ≫ Linux Kernel Version6.9 Updaterc2
Linux ≫ Linux Kernel Version6.9 Updaterc3
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.17% 0.066
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-667 Improper Locking

The product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors.

https://git.kernel.org/stable/c/35768baf0fdfc47ede42d899506bad78450e9294
Patch
https://git.kernel.org/stable/c/8a6fea3fcb577a543ef67683ca7105bde49a38fb
Patch
https://git.kernel.org/stable/c/a81b2acd43e24e419f65df97348c76a5a1496066
Patch
https://git.kernel.org/stable/c/bc004f5038220b1891ef4107134ccae44be55109
Patch