Improper locking in Linux kernel - CVE-2023-53133
Published: May 4, 2025 / Updated: May 10, 2025
Vulnerability identifier: #VU108482
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-53133
CWE-ID: CWE-667
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the unix_bpf_recvmsg() function in net/unix/unix_bpf.c, within the udp_bpf_recvmsg() function in net/ipv4/udp_bpf.c, within the tcp_bpf_recvmsg_parser() and tcp_bpf_recvmsg() functions in net/ipv4/tcp_bpf.c. A local user can perform a denial of service (DoS) attack.
Affected software
Linux kernel
How to mitigate CVE-2023-53133
Install update from vendor's website.
Linux kernel - update to 6.1.20
External References
- https://git.kernel.org/stable/c/4a476285f6d2921c3c9faa494eab83b78f78fc55
- https://git.kernel.org/stable/c/bf0579989de64d36e177c0611c685dc4a91457a7
- https://git.kernel.org/stable/c/d900f3d20cc3169ce42ec72acc850e662a4d4db2
- https://git.kernel.org/stable/c/f45cf3ae3068e70e2c7f3e24a7f8e8aa99511f03
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.20