#VU100168 Use-after-free in Linux kernel - CVE-2024-50257

Vulnerability identifier: #VU100168

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-2024-50257

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 xt_find_table_lock() function in net/netfilter/x_tables.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/ba22ea01348384df19cc1fabc7964be6e7189749
https://git.kernel.org/stable/c/cb7c388b5967946f097afdb759b7c860305f2d96
https://git.kernel.org/stable/c/6a1f088f9807f5166f58902d26246d0b88da03a8
https://git.kernel.org/stable/c/bab3bb35c03b263c486833d50d50c081d9e9832b
https://git.kernel.org/stable/c/f48d258f0ac540f00fa617dac496c4c18b5dc2fa

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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.