#VU94247 NULL pointer dereference in Linux kernel - CVE-2024-40957

Vulnerability identifier: #VU94247

Vulnerability risk: Low

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

CVE-ID: CVE-2024-40957

CWE-ID: CWE-476

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 perform a denial of service (DoS) attack.

The vulnerability exists due to NULL pointer dereference within the input_action_end_dx6() and input_action_end_dx4() functions in net/ipv6/seg6_local.c. A local user can perform a denial of service (DoS) attack.

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/af90e3d73dc45778767b2fb6e7edd57ebe34380d
https://git.kernel.org/stable/c/ec4d970b597ee5e17b0d8d73b7875197ce9a04d4
https://git.kernel.org/stable/c/d62df86c172033679d744f07d89e93e367dd11f6
https://git.kernel.org/stable/c/561475d53aa7e4511ee7cdba8728ded81cf1db1c
https://git.kernel.org/stable/c/9a3bc8d16e0aacd65c31aaf23a2bced3288a7779

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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.