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CVE-2021-43267

Public on 2021-11-02
Modified on 2022-01-06
Description

A flaw was discovered in the cryptographic receive code in the Linux kernel's implementation of transparent interprocess communication. An attacker, with the ability to send TIPC messages to the target, can corrupt memory and escalate privileges on the target system.

Severity
Important
See what this means
CVSS v3 Base Score
8.8
See breakdown

Affected Packages

Platform Package Release Date Advisory
Amazon Linux 2 - Kernel-5.10 Extra kernel 2022-01-20 23:56 ALAS2KERNEL-5.10-2022-007
Amazon Linux 2 - Livepatch Extra kernel-livepatch-5.10.62-55.141 2021-12-02 19:15 ALAS2LIVEPATCH-2021-074
Amazon Linux 2 - Livepatch Extra kernel-livepatch-5.10.68-62.173 2021-12-02 19:15 ALAS2LIVEPATCH-2021-073

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 8.8 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD CVSSv2 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P
NVD CVSSv3 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Red Hat: CVE-2021-43267 Mitre: CVE-2021-43267 FAQs regarding Amazon Linux ALAS/CVE Severity