NULL pointer dereference in Linux kernel net

1) NULL pointer dereference

EUVDB-ID: #VU90628

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-2024-26611

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

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 bpf_sk_base_func_proto(), bpf_xdp_frags_increase_tail() and bpf_xdp_frags_shrink_tail() functions in net/core/filter.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

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:*:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/82ee4781b8200e44669a354140d5c6bd966b8768
https://git.kernel.org/stable/c/5cd781f7216f980207af09c5e0e1bb1eda284540
https://git.kernel.org/stable/c/c5114710c8ce86b8317e9b448f4fd15c711c2a82

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.