NULL pointer dereference in Linux kernel ksmbd

1) NULL pointer dereference

EUVDB-ID: #VU97516

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-2024-46795

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_sess_setup() function in fs/ksmbd/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

External links

http://git.kernel.org/stable/c/9914f1bd61d5e838bb1ab15a71076d37a6db65d1
http://git.kernel.org/stable/c/93d54a4b59c4b3d803d20aa645ab5ca71f3b3b02
http://git.kernel.org/stable/c/41bc256da7e47b679df87c7fc7a5b393052b9cce
http://git.kernel.org/stable/c/4c8496f44f5bb5c06cdef5eb130ab259643392a1
http://git.kernel.org/stable/c/78c5a6f1f630172b19af4912e755e1da93ef0ab5

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.