#VU93186 Resource management error in Linux kernel - CVE-2021-47428

Vulnerability identifier: #VU93186

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-2021-47428

CWE-ID: CWE-399

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 resource management error within the EXC_COMMON_BEGIN() function in arch/powerpc/kernel/exceptions-64s.S. 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/411b38fe68ba20a8bbe724b0939762c3f16e16ca
https://git.kernel.org/stable/c/c835b3d1d6362b4a4ebb192da7e7fd27a0a45d01
https://git.kernel.org/stable/c/3e607dc4df180b72a38e75030cb0f94d12808712

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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.