#VU104411 Memory leak in Linux kernel - CVE-2021-47659

Vulnerability identifier: #VU104411

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-2021-47659

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 drm_universal_plane_init() function in drivers/gpu/drm/drm_plane.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/1e29d829ad51d1472dd035487953a6724b56fc33
https://git.kernel.org/stable/c/4ab7e453a3ee88c274cf97bee9487ab92a66d313
https://git.kernel.org/stable/c/4b674dd69701c2e22e8e7770c1706a69f3b17269
https://git.kernel.org/stable/c/787163d19bc3cdc6ca4b96223f62208534d1cf6b
https://git.kernel.org/stable/c/978e3d023256bfaf34a0033d40c94e8a8e70cf3c
https://git.kernel.org/stable/c/ad6dd7a2bac86118985c7b3426e175b9d3c1ec4f
https://git.kernel.org/stable/c/b5cd108143513e4498027b96ec4710702d186f11

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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.