PT-2025-4347 · Linux+8 · Linux Kernel+8
Greg Kroah-Hartman
+1
·
Published
2025-01-10
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Updated
2026-02-18
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CVE-2025-21666
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
The issue is related to the
vsock * has data() function in the Linux kernel, specifically in the net/vmw vsock/af vsock.c module. It involves a null pointer dereference. The problem occurs when vsock * has data() is called on a vsock socket that has been de-assigned from a transport. To prevent this, the code now returns 0 (indicating no space or data available) with a warning, allowing the system to continue running in a nearly consistent state and enabling debugging of future problems.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
NULL Pointer Dereference
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Astra Linux
Debian
Linuxmint
Linux Kernel
Red Hat
Red Os
Suse
Ubuntu