#VU99809 Use-after-free in Linux kernel - CVE-2024-50130

Vulnerability identifier: #VU99809

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-2024-50130

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 nf_hook_run_bpf(), bpf_nf_link_release() and bpf_nf_link_attach() functions in net/netfilter/nf_bpf_link.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/f41bd93b3e0508edc7ba820357f949071dcc0acc
https://git.kernel.org/stable/c/d0d7939543a1b3bb93af9a18d258a774daf8f162
https://git.kernel.org/stable/c/1230fe7ad3974f7bf6c78901473e039b34d4fb1f

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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.