#VU81919 Out-of-bounds read in Linux kernel - CVE-2023-39194

Vulnerability identifier: #VU81919

Vulnerability risk: Low

CVSSv4.0: 1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-39194

CWE-ID: CWE-125

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 gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition within the XFRM subsystem in Linux kernel. A local user with CAP_NET_ADMIN capability can trigger an out-of-bounds read error and read contents of memory on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Linux kernel: before 6.5 rc7

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External links
https://bugzilla.redhat.com/show_bug.cgi?id=2226788
https://www.zerodayinitiative.com/advisories/ZDI-CAN-18111/
https://github.com/torvalds/linux/commit/dfa73c17d55b921e1d4e154976de35317e43a93a

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?