#VU94934 Use-after-free in Linux kernel - CVE-2024-42109

Vulnerability identifier: #VU94934

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-2024-42109

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 nft_rcv_nl_event() function in net/netfilter/nf_tables_api.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/3325628cb36b7f216c5716e7b5124d9dc81199e4
https://git.kernel.org/stable/c/4c06c13317b9a08decedcd7aaf706691e336277c
https://git.kernel.org/stable/c/55a40406aac555defe9bdd0adec9508116ce7cb1
https://git.kernel.org/stable/c/09e650c3a3a7d804430260510534ccbf71c75b2e
https://git.kernel.org/stable/c/9f6958ba2e902f9820c594869bd710ba74b7c4c0

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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.