Use After Free The advisory has been revoked - it doesn't affect any version of package glibc (opens in a new tab)

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Snyk IDSNYK-UBUNTU2004-GLIBC-1297554
published6 Nov 2021
disclosed25 May 2021

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Introduced: 25 May 2021

CVE-2021-33574 (opens in a new tab) CWE-416 (opens in a new tab)

Amendment

The Ubuntu security team deemed this advisory irrelevant for Ubuntu:20.04.

NVD Description

Note: Versions mentioned in the description apply only to the upstream glibc package and not the glibc package as distributed by Ubuntu.

The mq_notify function in the GNU C Library (aka glibc) versions 2.32 and 2.33 has a use-after-free. It may use the notification thread attributes object (passed through its struct sigevent parameter) after it has been freed by the caller, leading to a denial of service (application crash) or possibly unspecified other impact.