#VU96834 Use-after-free in Linux kernel - CVE-2024-44974

Vulnerability identifier: #VU96834

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-2024-44974

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 lookup_subflow_by_daddr(), select_local_address(), select_signal_address(), __lookup_addr() and mptcp_pm_create_subflow_or_signal_addr() functions in net/mptcp/pm_netlink.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/9a9afbbc3fbfca4975eea4aa5b18556db5a0c0b8
https://git.kernel.org/stable/c/0201d65d9806d287a00e0ba96f0321835631f63f
https://git.kernel.org/stable/c/48e50dcbcbaaf713d82bf2da5c16aeced94ad07d

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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.