#VU119695 Use-after-free in Linux kernel - CVE-2023-53836
Published: December 10, 2025 / Updated: December 12, 2025
Vulnerability identifier: #VU119695
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-2023-53836
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 sk_psock_skb_ingress_self() and sk_psock_backlog() functions in net/core/skmsg.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/65ad600b9bde68d2d28709943ab00b51ca8f0a1d
- https://git.kernel.org/stable/c/923877254f002ae87d441382bb1096d9e773d56d
- https://git.kernel.org/stable/c/a454d84ee20baf7bd7be90721b9821f73c7d23d9
- https://git.kernel.org/stable/c/e6b5e47adb9166e732cdf7e6e034946e3f89f36d
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5.4