Use After Free Affecting glibc package, versions <2.31-13+deb11u3


0.0
critical

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High
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RHEL
5.9 medium
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SUSE
5.9 medium
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NVD
9.8 critical

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  • Snyk ID SNYK-DEBIAN11-GLIBC-1296898
  • published 26 May 2021
  • disclosed 25 May 2021

How to fix?

Upgrade Debian:11 glibc to version 2.31-13+deb11u3 or higher.

NVD Description

Note: Versions mentioned in the description apply to the upstream glibc package. See How to fix? for Debian:11 relevant versions.

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.