#VU96639 Type Confusion in Linux kernel - CVE-2024-44944

Vulnerability identifier: #VU96639

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-44944

CWE-ID: CWE-843

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 gain access to sensitive information.

The vulnerability exists due to insufficient validation of user-supplied input within the ctnetlink_del_expect() function in net/netfilter/nf_conntrack_netlink.c. A local user can trigger a type confusion error and gain access to sensitive information.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Linux kernel: All versions

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External links
https://www.zerodayinitiative.com/advisories/ZDI-24-1182/
https://patchwork.kernel.org/project/netdevbpf/patch/20240717215214.225394-2-pablo@netfilter.org/

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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.