CVE-2023-52480

HIGH

Linux Kernel 5.15-5.15.145 - Use-After-Free via Session Lookup Race Condition

Title source: llm
STIX 2.1

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix race condition between session lookup and expire Thread A + Thread B ksmbd_session_lookup | smb2_sess_setup sess = xa_load | | | xa_erase(&conn->sessions, sess->id); | | ksmbd_session_destroy(sess) --> kfree(sess) | // UAF! | sess->last_active = jiffies | + This patch add rwsem to fix race condition between ksmbd_session_lookup and ksmbd_expire_session.

References (4)

Core 4

Scores

CVSS v3 7.0
EPSS 0.0018
EPSS Percentile 7.6%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-362
Status published
Products (12)
Linux/Linux < 5.15
Linux/Linux 0626e6641f6b467447c81dd7678a69c66f7746cf - 18ced78b0ebccc2d16f426143dc56ab3aad666be
Linux/Linux 0626e6641f6b467447c81dd7678a69c66f7746cf - 53ff5cf89142b978b1a5ca8dc4d4425e6a09745f
Linux/Linux 0626e6641f6b467447c81dd7678a69c66f7746cf - a2ca5fd3dbcc665e1169044fa0c9e3eba779202b
Linux/Linux 0626e6641f6b467447c81dd7678a69c66f7746cf - c77fd3e25a51ac92b0f1b347a96eff6a0b4f066f
Linux/Linux 5.15
Linux/Linux 5.15.145 - 5.15.*
Linux/Linux 6.1.57 - 6.1.*
Linux/Linux 6.5.7 - 6.5.*
Linux/Linux 6.6
... and 2 more
Published Feb 29, 2024
Tracked Since Feb 18, 2026