#VU97783 Use-after-free in Linux kernel - CVE-2024-46858

Vulnerability identifier: #VU97783

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-2024-46858

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 mptcp_pm_del_add_timer() and remove_anno_list_by_saddr() 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/67409b358500c71632116356a0b065f112d7b707
https://git.kernel.org/stable/c/6452b162549c7f9ef54655d3fb9977b9192e6e5b
https://git.kernel.org/stable/c/12134a652b0a10064844ea235173e70246eba6dc
https://git.kernel.org/stable/c/b4cd80b0338945a94972ac3ed54f8338d2da2076

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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.