NULL pointer dereference in Linux kernel drm meson driver

1) NULL pointer dereference

EUVDB-ID: #VU90615

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-2021-47165

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 meson_probe_remote() function in drivers/gpu/drm/meson/meson_drv.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/b4298d33c1fcce511ffe84d8d3de07e220300f9b
http://git.kernel.org/stable/c/e256a0eb43e17209e347409a80805b1659398d68
http://git.kernel.org/stable/c/4ce2bf20b4a6e307e114847d60b2bf40a6a1fac0
http://git.kernel.org/stable/c/d66083c0d6f5125a4d982aa177dd71ab4cd3d212
http://git.kernel.org/stable/c/b4b91033a0b11fe9ade58156cd9168f89f4a8c1a
http://git.kernel.org/stable/c/7cfc4ea78fc103ea51ecbacd9236abb5b1c490d2

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.