#VU103127 Improper locking in Linux kernel - CVE-2024-57946

Vulnerability identifier: #VU103127

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-2024-57946

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 virtblk_remove() and virtblk_restore() functions in drivers/block/virtio_blk.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/12c0ddd6c551c1e438b087f874b4f1223a75f7ea
https://git.kernel.org/stable/c/6dea8e3de59928974bf157dd0499d3958d744ae4
https://git.kernel.org/stable/c/7678abee0867e6b7fb89aa40f6e9f575f755fb37
https://git.kernel.org/stable/c/92d5139b91147ab372a17daf5dc27a5b9278e516
https://git.kernel.org/stable/c/9ca428c6397abaa8c38f5c69133a2299e1efbbf2
https://git.kernel.org/stable/c/9e323f856cf4963120e0e3892a84ef8bd764a0e4
https://git.kernel.org/stable/c/d738f3215bb4f88911ff4579780a44960c8e0ca5

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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.