#VU108479 Improper locking in Linux kernel - CVE-2023-53108

Vulnerability identifier: #VU108479

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-2023-53108

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 net/iucv/iucv.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.1, 6.1 rc1, 6.1 rc3, 6.1 rc7, 6.1.1, 6.1.2, 6.1.3, 6.1.4, 6.1.5, 6.1.6, 6.1.7, 6.1.8, 6.1.9, 6.1.10, 6.1.11, 6.1.12, 6.1.13, 6.1.14, 6.1.15, 6.1.16, 6.1.17, 6.1.18, 6.1.19, 6.1.20

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External links
https://git.kernel.org/stable/c/3cfdefdaaa4b2a77e84d0db5e0a47a7aa3bb615a
https://git.kernel.org/stable/c/3d87debb8ed2649608ff432699e7c961c0c6f03b
https://git.kernel.org/stable/c/71da5991b6438ad6da13ceb25465ee2760a1c52f
https://git.kernel.org/stable/c/93a970494881004c348d8feb38463ee72496e99a
https://git.kernel.org/stable/c/a908eae0f71811afee86be7088692f1aa5855c3b
https://git.kernel.org/stable/c/b0d2bb5e31a693ebc8888eb407f8a257a3680efa
https://git.kernel.org/stable/c/bd2e78462ae18484e55ae4d285df2c86b86bdd12
https://git.kernel.org/stable/c/c78f1345db4e4b3b78f9b768f4074ebd60abe966
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.21

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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.