NULL pointer dereference in Linux kernel intel i40e driver

1) NULL pointer dereference

EUVDB-ID: #VU92919

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-2021-47619

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 i40e_get_lump() function in drivers/net/ethernet/intel/i40e/i40e_main.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/d46fa4ea9756ef6cbcf9752d0832cc66e2d7121b
http://git.kernel.org/stable/c/be6998f232b8e4ca8225029e305b8329d89bfd59
http://git.kernel.org/stable/c/768eb705e6381f0c70ca29d4e66f19790d5d19a1
http://git.kernel.org/stable/c/00eddb0e4ea115154581d1049507a996acfc2d3e
http://git.kernel.org/stable/c/4b3aa858268b7b9aeef02e5f9c4cd8f8fac101c8
http://git.kernel.org/stable/c/92947844b8beee988c0ce17082b705c2f75f0742

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.