SB2025091957 - Use-after-free in Linux kernel qrtr
Published: September 19, 2025 Updated: September 22, 2025
Security Bulletin ID
SB2025091957
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2023-53445)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the qrtr_node_lookup() function in net/qrtr/af_qrtr.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/44d807320000db0d0013372ad39b53e12d52f758
- https://git.kernel.org/stable/c/48a07f6e00d305597396da4d7494b81cec05b9d3
- https://git.kernel.org/stable/c/98a9cd82c541ef6cbdb829cd6c05cbbb471e373c
- https://git.kernel.org/stable/c/aa95efa187b4114075f312b3c4680d050b56fdec
- https://git.kernel.org/stable/c/b9ba5906c42089f8e1d0001b7b50a7940f086cbb
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.107