Input validation error in Linux kernel linux sched

1) Input validation error

EUVDB-ID: #VU96648

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-2022-48944

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to improper input validation within the tg_nop(), sched_fork(), sched_post_fork(), set_user_nice(), __setscheduler_params() and sched_init() functions in kernel/sched/core.c, within the copy_process() function in kernel/fork.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:*:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/3411613611a5cddf7e80908010dc87cb527dd13b
https://git.kernel.org/stable/c/c65cfd89cef669d90c59f3bf150af6458137a04f
https://git.kernel.org/stable/c/b1e8206582f9d680cff7d04828708c8b6ab32957

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.