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CVE-2021-33574

CVE-2021-33574

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 9.8 · Critical · EPSS 3.5% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • n/a

    Versions
    • n/a: Affected

    No fix published

  • glibc Debian:12

    Affected ranges
    • ECOSYSTEM: < 2.32-1

    Update to 2.32-1

  • glibc Debian:13

    Affected ranges
    • ECOSYSTEM: < 2.32-1

    Update to 2.32-1

  • glibc Debian:14

    Affected ranges
    • ECOSYSTEM: < 2.32-1

    Update to 2.32-1

  • eglibc Ubuntu:Pro:14.04:LTS

    Versions
    • 2.17-93ubuntu4
    • 2.18-0ubuntu1
    • 2.18-0ubuntu2
    • 2.18-0ubuntu4
    • 2.18-0ubuntu5
    • 2.18-0ubuntu6
    • 2.18-0ubuntu7
    • 2.19-0ubuntu2
    • 2.19-0ubuntu3
    • 2.19-0ubuntu4
    • 2.19-0ubuntu5
    • 2.19-0ubuntu6
    • 2.19-0ubuntu6.1
    • 2.19-0ubuntu6.3
    • 2.19-0ubuntu6.4
    • 2.19-0ubuntu6.5
    • 2.19-0ubuntu6.6
    • 2.19-0ubuntu6.7
    • 2.19-0ubuntu6.8
    • 2.19-0ubuntu6.9
    • 2.19-0ubuntu6.10
    • 2.19-0ubuntu6.11
    • 2.19-0ubuntu6.13
    • 2.19-0ubuntu6.14
    • 2.19-0ubuntu6.15
    • 2.19-0ubuntu6.15+esm1
    • 2.19-0ubuntu6.15+esm2
    • 2.19-0ubuntu6.15+esm3
    • 2.19-0ubuntu6.15+esm4
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • glibc Ubuntu:Pro:16.04:LTS

    Versions
    • 2.21-0ubuntu4
    • 2.21-0ubuntu5
    • 2.21-0ubuntu6
    • 2.23-0ubuntu1
    • 2.23-0ubuntu2
    • 2.23-0ubuntu3
    • 2.23-0ubuntu4
    • 2.23-0ubuntu5
    • 2.23-0ubuntu6
    • 2.23-0ubuntu7
    • 2.23-0ubuntu9
    • 2.23-0ubuntu10
    • 2.23-0ubuntu11
    • 2.23-0ubuntu11.2
    • 2.23-0ubuntu11.3
    • 2.23-0ubuntu11.3+esm1
    • 2.23-0ubuntu11.3+esm2
    • 2.23-0ubuntu11.3+esm3
    • 2.23-0ubuntu11.3+esm5
    • 2.23-0ubuntu11.3+esm6
    • 2.23-0ubuntu11.3+esm7
    • 2.23-0ubuntu11.3+esm8
    • 2.23-0ubuntu11.3+esm9
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • glibc Ubuntu:Pro:18.04:LTS

    Versions
    • 2.26-0ubuntu2
    • 2.26-0ubuntu2.1
    • 2.27-0ubuntu2
    • 2.27-0ubuntu3
    • 2.27-3ubuntu1
    • 2.27-3ubuntu1.2
    • 2.27-3ubuntu1.3
    • 2.27-3ubuntu1.4
    • 2.27-3ubuntu1.5
    • 2.27-3ubuntu1.6
    • 2.27-3ubuntu1.6+esm1
    • 2.27-3ubuntu1.6+esm2
    • 2.27-3ubuntu1.6+esm3
    • 2.27-3ubuntu1.6+esm4
    • 2.27-3ubuntu1.6+esm5
    • 2.27-3ubuntu1.6+esm6
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • glibc Ubuntu:Pro:20.04:LTS

    Versions
    • 2.30-0ubuntu2
    • 2.30-0ubuntu3
    • 2.31-0ubuntu5
    • 2.31-0ubuntu6
    • 2.31-0ubuntu7
    • 2.31-0ubuntu9
    • 2.31-0ubuntu9.1
    • 2.31-0ubuntu9.2
    • 2.31-0ubuntu9.3
    • 2.31-0ubuntu9.7
    • 2.31-0ubuntu9.9
    • 2.31-0ubuntu9.12
    • 2.31-0ubuntu9.14
    • 2.31-0ubuntu9.15
    • 2.31-0ubuntu9.16
    • 2.31-0ubuntu9.17
    • 2.31-0ubuntu9.18
    • 2.31-0ubuntu9.18+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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