#VU97523 NULL pointer dereference in Linux kernel - CVE-2024-46763

Vulnerability identifier: #VU97523

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-2024-46763

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 fou_from_sock(), fou_gro_receive(), fou_gro_complete() and gue_gro_receive() functions in net/ipv4/fou.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/231c235d2f7a66f018f172e26ffd47c363f244ef
https://git.kernel.org/stable/c/4494bccb52ffda22ce5a1163a776d970e6229e08
https://git.kernel.org/stable/c/d7567f098f54cb53ee3cee1c82e3d0ed9698b6b3
https://git.kernel.org/stable/c/1df42be305fe478ded1ee0c1d775f4ece713483b
https://git.kernel.org/stable/c/c46cd6aaca81040deaea3500ba75126963294bd9
https://git.kernel.org/stable/c/7e4196935069947d8b70b09c1660b67b067e75cb

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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.