Improper locking in Linux kernel net driver

1) Improper locking

EUVDB-ID: #VU105028

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-2024-57994

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 pfifo_fast_change_tx_queue_len() function in net/sched/sch_generic.c, within the tun_queue_resize() function in drivers/net/tun.c, within the tap_queue_resize() function in drivers/net/tap.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.13 - 6.13.1

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:6.13:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.13.1:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/3257dac521d0ac6653108c755141dce634bb8ff2
https://git.kernel.org/stable/c/a126061c80d5efb4baef4bcf346094139cd81df6
https://git.kernel.org/stable/c/e74801b7628dc52b17471aec729bc675479ddc73
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.13.2

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.