#VU90169 Use-after-free in Linux kernel - CVE-2024-27395

Vulnerability identifier: #VU90169

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-27395

CWE-ID: CWE-416

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 escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the ovs_ct_limit_exit() function in net/openvswitch/conntrack.c. A local user can escalate privileges on the system.

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/2db9a8c0a01fa1c762c1e61a13c212c492752994
https://git.kernel.org/stable/c/589523cf0b384164e445dd5db8d5b1bf97982424
https://git.kernel.org/stable/c/35880c3fa6f8fe281a19975d2992644588ca33d3
https://git.kernel.org/stable/c/9048616553c65e750d43846f225843ed745ec0d4
https://git.kernel.org/stable/c/bca6fa2d9a9f560e6b89fd5190b05cc2f5d422c1
https://git.kernel.org/stable/c/eaa5e164a2110d2fb9e16c8a29e4501882235137
https://git.kernel.org/stable/c/edee0758747d7c219e29db9ed1d4eb33e8d32865
https://git.kernel.org/stable/c/5ea7b72d4fac2fdbc0425cd8f2ea33abe95235b2

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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.