PT-2025-14357 · Linux+5 · Linux Kernel+5
Published
2025-03-09
·
Updated
2026-05-26
·
CVE-2025-21976
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 vulnerability in the Linux kernel has been resolved, related to the removal of a Hyper-V framebuffer device. When the device is unbound, the hyperv fb driver attempts to release the framebuffer forcefully, which can produce a warning and prevent the framebuffer from being released if it is in use. The issue is resolved by moving the release of the framebuffer and associated memory to the fb ops.fb destroy function, allowing the framebuffer framework to handle it gracefully.
Recommendations
To resolve this issue, update the Linux kernel to a version that includes the fix, which moves the release of the framebuffer and associated memory to the fb ops.fb destroy function.
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Buffer Overflow
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Weakness Enumeration
Related Identifiers
Affected Products
Astra Linux
Debian
Linuxmint
Linux Kernel
Suse
Ubuntu