#VU90760 Improper locking in Linux kernel - CVE-2024-35794

Vulnerability identifier: #VU90760

Vulnerability 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-2024-35794

CWE-ID: CWE-667

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

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

The vulnerability exists due to improper locking within the md_clean() and __md_stop_writes() functions in drivers/md/md.c, within the raid_message(), raid_postsuspend(), raid_preresume() and raid_resume() functions in drivers/md/dm-raid.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.7, 6.7 rc1, 6.7 rc2, 6.7 rc3, 6.7 rc5, 6.7 rc6, 6.7 rc7, 6.7.1, 6.7.2, 6.7.3, 6.7.4, 6.7.5, 6.7.6, 6.7.7, 6.7.8, 6.7.9, 6.7.10, 6.7.11, 6.8, 6.8 rc1, 6.8 rc2, 6.8 rc5, 6.8.1, 6.8.2

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External links
https://git.kernel.org/stable/c/af916cb66a80597f3523bc85812e790bcdcfd62b
https://git.kernel.org/stable/c/eaa8fc9b092837cf2c754bde1a15d784ce9a85ab
https://git.kernel.org/stable/c/16c4770c75b1223998adbeb7286f9a15c65fba73
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.7.12
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.8.3

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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.