PT-2023-4321 · Linux+6 · Linux Kernel+6
Mauro Matteo Cascella
·
Published
2023-05-01
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Updated
2026-03-14
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CVE-2023-4134
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A use-after-free vulnerability was found in the cyttsp4 core driver in the Linux kernel. This issue occurs in the device cleanup routine due to a possible rearming of the watchdog timer from the workqueue. The vulnerability is related to a race condition, allowing a local user to crash the system, causing a denial of service. The
cyttsp4 stop wd timer() function in the drivers/input/touchscreen/cyttsp4 core.c module is affected.Recommendations
To resolve the issue, change
del timer sync() to timer shutdown sync() in the cyttsp4 core driver.
At the moment, there is no information about a newer version that contains a fix for this vulnerability.DoS
Race Condition
Use After Free
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Related Identifiers
Affected Products
Alt Linux
Astra Linux
Debian
Linuxmint
Linux Kernel
Suse
Ubuntu