#VU115679 Use-after-free in Linux kernel - CVE-2023-53305
Published: September 17, 2025 / Updated: September 22, 2025
Vulnerability identifier: #VU115679
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-2023-53305
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 l2cap_le_command_rej() function in net/bluetooth/l2cap_core.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/149daab45922ab1ac7f0cbeacab7251a46bf5e63
- https://git.kernel.org/stable/c/1a40c56e8bff3e424724d78a9a6b3272dd8a371d
- https://git.kernel.org/stable/c/255be68150291440657b2cdb09420b69441af3d8
- https://git.kernel.org/stable/c/2958cf9f805b9f0bdc4a761bf6ea281eb8d44f8e
- https://git.kernel.org/stable/c/548a6b64b3c0688f01119a6fcccceb41f8c984e4
- https://git.kernel.org/stable/c/e76bab1b7afa580cd76362540fc37551ada4359b
- https://git.kernel.org/stable/c/f752a0b334bb95fe9b42ecb511e0864e2768046f
- https://git.kernel.org/stable/c/fe49aa73cca6608714477b74bfc6874b9db979df
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.255