CVE-2024-56729

MEDIUM

Linux Kernel - Use-After-Free in SMB Cached Directory Lease Break

Title source: llm
STIX 2.1

Description

In the Linux kernel, the following vulnerability has been resolved: smb: Initialize cfid->tcon before performing network ops Avoid leaking a tcon ref when a lease break races with opening the cached directory. Processing the leak break might take a reference to the tcon in cached_dir_lease_break() and then fail to release the ref in cached_dir_offload_close, since cfid->tcon is still NULL.

References (4)

Core 4

Scores

CVSS v3 4.7
EPSS 0.0019
EPSS Percentile 9.3%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-401
Status published
Products (14)
linux/Kernel 6.1.0 - 6.6.64linux
linux/Kernel 6.12.0 - 6.12.2linux
linux/Kernel 6.7.0 - 6.11.11linux
Linux/Linux < 6.1
Linux/Linux 6.1
Linux/Linux 6.11.11 - 6.11.*
Linux/Linux 6.12.2 - 6.12.*
Linux/Linux 6.13
Linux/Linux 6.6.64 - 6.6.*
Linux/Linux ebe98f1447bbccf8228335c62d86af02a0ed23f7 - 1b9ab6b648f89441c8a13cb3fd8ca83ffebc5262
... and 4 more
Published Dec 29, 2024
Tracked Since Feb 18, 2026