#VU89924 Memory leak in Linux kernel - CVE-2021-47516

Vulnerability identifier: #VU89924

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-2021-47516

CWE-ID: CWE-401

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 memory leak within the nfp_cpp_area_cache_add() function in drivers/net/ethernet/netronome/nfp/nfpcore/nfp_cppcore.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
https://git.kernel.org/stable/c/3e93abcdcec0436fbf0b6a88ae806902426895a2
https://git.kernel.org/stable/c/eb51f639ef3fd5498b7def290ed8681b6aadd9a7
https://git.kernel.org/stable/c/2e0e072e62fdaf7816220af08e05c020f0fcb77a
https://git.kernel.org/stable/c/484069b5de9d223cc1c64c6f80389a99cfef51f1
https://git.kernel.org/stable/c/f707820c09239d6f67699d9b2ff57863cc7905b0
https://git.kernel.org/stable/c/c56c96303e9289cc34716b1179597b6f470833de

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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.