Improper error handling in Linux kernel x86 mm

1) Improper error handling

EUVDB-ID: #VU92944

Risk: Low

CVSSv3.1: 4.8 [AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-26906

CWE-ID: CWE-388 - Error Handling

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper error handling within the copy_from_kernel_nofault_allowed() function in arch/x86/mm/maccess.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

External links

http://git.kernel.org/stable/c/6e4694e65b6db4c3de125115dd4f55848cc48381
http://git.kernel.org/stable/c/e8a67fe34b76a49320b33032228a794f40b0316b
http://git.kernel.org/stable/c/f175de546a3eb77614d94d4c02550181c0a8493e
http://git.kernel.org/stable/c/57f78c46f08198e1be08ffe99c4c1ccc12855bf5
http://git.kernel.org/stable/c/29bd6f86904682adafe9affbc7f79b14defcaff8
http://git.kernel.org/stable/c/32019c659ecfe1d92e3bf9fcdfbb11a7c70acd58

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.