#VU76655 Race condition in linux-image-oem (Ubuntu package) - CVE-2023-2612

Vulnerability identifier: #VU76655

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-2023-2612

CWE-ID: CWE-362

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
linux-image-oem (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor: Canonical Ltd.

Description

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

The vulnerability exists due to a race condition within the shiftfs filesystem when handling inode locking in some
situations. A local user can exploit the race and cause a denial of service (kernel deadlock).

Mitigation
Install updates from vendor's website.

Vulnerable software versions

linux-image-oem (Ubuntu package): before 5.17.0.1032.30

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External links
https://ubuntu.com/security/CVE-2023-2612

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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.