#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: 5.10 - 5.10.226, 5.15 - 5.15.167, 6.1 - 6.1.110, 6.6 - 6.6.51, 6.10 - 6.10.10

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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
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.227
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.168
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.111
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.10.11
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.11
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.52

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?