#VU90631 NULL pointer dereference in Linux kernel - CVE-2024-26626

Vulnerability identifier: #VU90631

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-2024-26626

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 udp_queue_rcv_one_skb() function in net/ipv4/udp.c, within the raw_rcv_skb() function in net/ipv4/raw.c, within the ipmr_cache_report() function in net/ipv4/ipmr.c, within the ipv4_pktinfo_prepare() function in net/ipv4/ip_sockglue.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/d2f1b7fe74afd66298dbb3c7b39e7b62e4df1724
https://git.kernel.org/stable/c/dcaafdba6c6162bb49f1192850bc3bbc3707738c
https://git.kernel.org/stable/c/2e8c9ae40adda2be1ba41c05fd3cd1e61cce3207
https://git.kernel.org/stable/c/e622502c310f1069fd9f41cd38210553115f610a

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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.