Improper locking in Linux kernel bpf



| Updated: 2025-05-12
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-48939
CWE-ID CWE-667
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Linux kernel
Operating systems & Components / Operating system

Vendor Linux Foundation

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Improper locking

EUVDB-ID: #VU96430

Risk: Low

CVSSv4.0: 4.3 [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/E:U/U:Clear]

CVE-ID: CVE-2022-48939

CWE-ID: CWE-667 - Improper Locking

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper locking within the generic_map_delete_batch(), generic_map_update_batch() and generic_map_lookup_batch() functions in kernel/bpf/syscall.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 5.10 - 5.17 rc12

CPE2.3 External links

https://git.kernel.org/stable/c/7ef94bfb08fb9e73defafbd5ddef6b5a0e2ee12b
https://git.kernel.org/stable/c/8628f489b749a4f9767991631921dbe3fbcdc784
https://git.kernel.org/stable/c/7e8099967d0e3ff9d1ae043e80b27fbe46c08417
https://git.kernel.org/stable/c/75134f16e7dd0007aa474b281935c5f42e79f2c8
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.103
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.26
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.12
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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