Vulnerability identifier: #VU91665

Vulnerability risk: Low

CVSSv3.1: 6.8 [AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-47563

CWE-ID: CWE-191

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a local user to execute arbitrary code.

The vulnerability exists due to integer underflow within the ice_prepare_xdp_rings() and ice_xdp_setup_prog() functions in drivers/net/ethernet/intel/ice/ice_main.c. A local user can execute arbitrary code.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

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External links
http://git.kernel.org/stable/c/e65a8707b4cd756d26d246bb2b9fab06eebafac1
http://git.kernel.org/stable/c/1f10b09ccc832698ef4624a6ab9a213b6ccbda76
http://git.kernel.org/stable/c/f65ee535df775a13a1046c0a0b2d72db342f8a5b

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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.