NULL pointer dereference in Linux kernel ethernet sfc driver

1) NULL pointer dereference

EUVDB-ID: #VU90566

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-2022-48648

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 efx_hard_start_xmit() function in drivers/net/ethernet/sfc/tx.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/b3b41d4d95d3822b2e459ecbc80d030ea6aec5e7
http://git.kernel.org/stable/c/8547c7bfc0617e7184e4da65b9b96681fcfe9998
http://git.kernel.org/stable/c/b3b952168ee1f220ba729fa100fd9d5aa752eb03
http://git.kernel.org/stable/c/0a242eb2913a4aa3d6fbdb86559f27628e9466f3

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.