NULL pointer dereference in Linux kernel smb client

1) NULL pointer dereference

EUVDB-ID: #VU97260

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/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-2024-46686

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 smb2_new_read_req() function in fs/smb/client/smb2pdu.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

External links

http://git.kernel.org/stable/c/6df57c63c200cd05e085c3b695128260e21959b7
http://git.kernel.org/stable/c/a01859dd6aebf826576513850a3b05992809e9d2
http://git.kernel.org/stable/c/b902fb78ab21299e4dd1775e7e8d251d5c0735bc
http://git.kernel.org/stable/c/c724b2ab6a46435b4e7d58ad2fbbdb7a318823cf

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.