#VU61999 Information disclosure in Linux kernel - CVE-2021-39800

Vulnerability identifier: #VU61999

Vulnerability risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-39800

CWE-ID: CWE-200

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 gain access to potentially sensitive information.

The vulnerability exists due to excessive data output in ION handle in Linux kernel. A local user can gain access to sensitive information.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Linux kernel: All versions

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External links
https://source.android.com/security/bulletin/2022-04-01#details-05
https://android.googlesource.com/kernel/common/+/504e1d6ee65d5
https://android.googlesource.com/kernel/common/+/a8200613c8c9f
https://android.googlesource.com/kernel/common/+/c47385c73fced

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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.