NULL pointer dereference in Linux kernel nfs flexfilelayout

1) NULL pointer dereference

EUVDB-ID: #VU90571

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-2024-26868

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 ff_layout_cancel_io() function in fs/nfs/flexfilelayout/flexfilelayout.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/31db25e3141b20e2a76a9f219eeca52e3cab126c
https://git.kernel.org/stable/c/7ca651b4ec4a049f5a46a0e5ff921b86b91c47c5
https://git.kernel.org/stable/c/5ada9016b1217498fad876a3d5b07645cc955608
https://git.kernel.org/stable/c/dac068f164ad05b35e7c0be13f138c3f6adca58f
https://git.kernel.org/stable/c/719fcafe07c12646691bd62d7f8d94d657fa0766

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.