#VU91537 Improper locking in Linux kernel - CVE-2023-52493

Vulnerability identifier: #VU91537

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-2023-52493

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 parse_xfer_event() function in drivers/bus/mhi/host/main.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/20a6dea2d1c68d4e03c6bb50bc12e72e226b5c0e
https://git.kernel.org/stable/c/6e4c84316e2b70709f0d00c33ba3358d9fc8eece
https://git.kernel.org/stable/c/3c5ec66b4b3f6816f3a6161538672e389e537690
https://git.kernel.org/stable/c/eaefb9464031215d63c0a8a7e2bfaa00736aa17e
https://git.kernel.org/stable/c/b8eff20d87092e14cac976d057cb0aea2f1d0830
https://git.kernel.org/stable/c/01bd694ac2f682fb8017e16148b928482bc8fa4b

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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.