#VU104541 Out-of-bounds read in Linux kernel - CVE-2021-47650

Vulnerability identifier: #VU104541

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-2021-47650

CWE-ID: CWE-125

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 an out-of-bounds read error within the snd_soc_new_compress() function in sound/soc/soc-compress.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/08af6da684b44097ea09f1d74d5858b837ed203b
https://git.kernel.org/stable/c/4639c1d97f385f4784f44d66a3da0672f4951ada
https://git.kernel.org/stable/c/68a69ad8df959e5211ed4a8e120783b2d352ea74
https://git.kernel.org/stable/c/de2c6f98817fa5decb9b7d3b3a8a3ab864c10588
https://git.kernel.org/stable/c/f69a75cb8a98c6c487d620442c68595726a69f60
https://git.kernel.org/stable/c/fc237b8d624f4bcb0f21a532627ce4e3b3a85569

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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.