PT-2026-34960 · Linux+2 · Linux Kernel+2

CVE-2026-31608

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Published

2026-04-12

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Updated

2026-07-24

CVSS v2.0

10

Critical

VectorAV:N/AC:L/Au:N/C:C/I:C/A:C
Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)
Description A double-free issue exists in the SMB server component. The function smb direct flush send list() already invokes smb direct free sendmsg(), leading to a second call to smb direct free sendmsg() after post sendmsg() moves the item to the batch list.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Multiple Releases of Same Resource or Handle

Double Free

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Weakness Enumeration

CWE-1341CWE-415

Related Identifiers

BDU:2026-12584
CVE-2026-31608
OPENSUSE-SU-2026:10703-1
USN-8488-1
USN-8488-2
USN-8507-1
USN-8569-1
USN-8603-1

Affected Products

Linuxmint
Linux Kernel
Ubuntu