PT-2026-31306 · Linux+1 · Linux Kernel+1
CVE-2026-31411
·
Published
2026-04-08
·
Updated
2026-07-31
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 Linux kernel contains a flaw in the ATM send path (sendmsg -> vcc sendmsg -> sigd send). The system reads the vcc pointer from
msg->vcc without validation, and this pointer originates from user space via sendmsg(), making it susceptible to forgery. A malicious daemon can send arbitrary pointer values. This can lead to a crash due to the kernel dereferencing an invalid pointer. The issue is addressed by introducing find get vcc(), which validates the pointer by searching vcc hash and acquiring a reference using sock hold() if found.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Untrusted Pointer Dereference
NULL Pointer Dereference
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Related Identifiers
Affected Products
Linuxmint
Linux Kernel