CVE-2023-5345

HIGH

Linux Kernel < 6.1.56 - Use After Free

Title source: rule

Description

A use-after-free vulnerability in the Linux kernel's fs/smb/client component can be exploited to achieve local privilege escalation. In case of an error in smb3_fs_context_parse_param, ctx->password was freed but the field was not set to NULL which could lead to double free. We recommend upgrading past commit e6e43b8aa7cd3c3af686caf0c2e11819a886d705.

Exploits (1)

gitlab WORKING POC

by aouadjaout · poc

https://gitlab.com/aouadjaout/cve-2023-5345

View Code ZIP pw:eip

References (6)

[Third Party Advisory, VDB Entry] http://packetstormsecurity.com/files/177029/Kernel-Live-Patch-Security-Notice-LSN-0100-1.html

[Mailing List, Patch] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e6e43b8aa7cd3c3af686caf0c2e11819a886d705

[Mailing List, Patch] https://kernel.dance/e6e43b8aa7cd3c3af686caf0c2e11819a886d705

[Mailing List] https://lists.fedoraproject.org/archives/list/[email protected]/message/GISYSL3F6WIEVGHJGLC2MFNTUXHPTKQH/

[Mailing List] https://lists.fedoraproject.org/archives/list/[email protected]/message/GPMICQ2HVZO5UAM5KPXHAZKA2U3ZDOO6/

[Mailing List] https://lists.fedoraproject.org/archives/list/[email protected]/message/V5PDNWPKAP3WL5RQZ4RIDS6MG32OHH5R/

Scores

CVSS v3 7.8

EPSS 0.0003

EPSS Percentile 7.0%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE

CWE-416

Status published

Products (5)

fedoraproject/fedora 37

fedoraproject/fedora 38

fedoraproject/fedora 39

linux/linux_kernel 6.6 rc1 (3 CPE variants)

linux/linux_kernel 6.0.16 - 6.1.56

Published Oct 03, 2023

Tracked Since Feb 18, 2026