Use-after-free in Linux kernel - CVE-2022-28796
Published: November 21, 2023
Vulnerability identifier: #VU83380
CSH Severity: Low
CVSS v4: 7.3 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2022-28796
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local authenticated user to escalate privileges on the system.
The vulnerability exists due to a transaction_t race condition within the jbd2_journal_wait_updates() function in fs/jbd2/transaction.c. A local authenticated user can trigger a use-after-free error and escalate privileges on the system.
Affected software
Linux kernel
How to mitigate CVE-2022-28796
Install update from vendor's website.
Linux kernel - update to 5.17.1