#VU77243 Improper locking in Linux kernel - CVE-2023-2269

Vulnerability identifier: #VU77243

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-2023-2269

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 attack (DoS).

The vulnerability exists due to double-locking error in table_clear in drivers/md/dm-ioctl.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Linux kernel: All versions

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External links
https://lore.kernel.org/lkml/ZD1xyZxb3rHot8PV@redhat.com/t/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/63AJUCJTZCII2JMAF7MGZEM66KY7IALT/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FBLBKW2WM5YSTS6OGEU5SYHXSJ5EWSTV/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IXHBLWYNSUBS77TYPOJTADPDXKBH2F4U/

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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.