Use-after-free in Linux kernel mptcp

1) Use-after-free

EUVDB-ID: #VU97783

Risk: Low

CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-46858

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

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

CPE2.3

External links

http://git.kernel.org/stable/c/67409b358500c71632116356a0b065f112d7b707
http://git.kernel.org/stable/c/6452b162549c7f9ef54655d3fb9977b9192e6e5b
http://git.kernel.org/stable/c/12134a652b0a10064844ea235173e70246eba6dc
http://git.kernel.org/stable/c/b4cd80b0338945a94972ac3ed54f8338d2da2076

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.