#VU92947 Improper error handling in Linux kernel - CVE-2021-47015

Vulnerability identifier: #VU92947

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-47015

CWE-ID: CWE-388

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 perform a denial of service (DoS) attack.

The vulnerability exists due to improper error handling within the bnxt_rx_pkt() function in drivers/net/ethernet/broadcom/bnxt/bnxt.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

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External links
http://git.kernel.org/stable/c/b1523e4ba293b2a32d9fabaf70c1dcaa6e3e2847
http://git.kernel.org/stable/c/4fcaad2b7dac3f16704f8118c7e481024ddbd3ed
http://git.kernel.org/stable/c/e187ef83c04a5d23e68d39cfdff1a1931e29890c
http://git.kernel.org/stable/c/3fbc5bc651d688fbea2a59cdc91520a2f5334d0a
http://git.kernel.org/stable/c/bbd6f0a948139970f4a615dff189d9a503681a39

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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.