#VU96147 Improper locking in Linux kernel - CVE-2024-43855

Vulnerability identifier: #VU96147

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-2024-43855

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_end_flush(), submit_flushes() and md_submit_flush_data() functions in drivers/md/md.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

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External links
https://git.kernel.org/stable/c/32226070813140234b6c507084738e8e8385c5c6
https://git.kernel.org/stable/c/2d0738a8322bf4e5bfe693d16b3111928a9ccfbf
https://git.kernel.org/stable/c/ca963eefbc3331222b6121baa696d49ba2008811
https://git.kernel.org/stable/c/611d5cbc0b35a752e657a83eebadf40d814d006b

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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.