#VU115880 Use-after-free in Linux kernel - CVE-2023-53445
Published: September 19, 2025 / Updated: September 22, 2025
Vulnerability identifier: #VU115880
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2023-53445
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
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 repository.
External links
- 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