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OpenAdvisories
Medium RHSA-2026:73429 3 CVEs

Red Hat Security Advisory: gawk security update

Published Sep 30, 2026 · Updated Oct 15, 2026

Ecosystem: Red Hat

Fixed packages 4

ReleasePackageFixed in
Red Hat · RHEL 10 enterprise_linux:10.2 gawk 0:5.3.0-6.el10_2.1
Red Hat · RHEL 10 enterprise_linux:10.2 gawk-all-langpacks 0:5.3.0-6.el10_2.1
Red Hat · RHEL 10 enterprise_linux:10.2 gawk-debuginfo 0:5.3.0-6.el10_2.1
Red Hat · RHEL 10 enterprise_linux:10.2 gawk-debugsource 0:5.3.0-6.el10_2.1

Vulnerabilities 3

  • Medium 5.1
    CVE-2026-40467

    Use after free in gawk

    Use After Free vulnerability has been found in "io.c" program file of gawk (do_getline_redir() routine). This issue may lead to a crash. It affects gawk in versions 5.4.0 and below.

    GNU gawk gawk gawk Debian Ubuntu Azure Linux
  • Medium 5.1
    CVE-2026-40553

    Stack-based buffer overflow in gawk

    Buffer overflow vulnerability has been found in "extension/readdir.c" program file of gawk (ftype() routine). This issue could be used to crash the program and potentially to achieve code execution, although the latter has not been confirmed to be feasible. I…

    GNU gawk gawk gawk Debian Ubuntu Azure Linux
  • Low 2.1
    CVE-2026-40468

    Heap buffer overflow in gawk

    Integer overflow vulnerability has been found in "builtin.c" program file of gawk. This issue may lead to memory exhaustion on the hosting operating system and could be used to overwrite gawk heap metadata and objects with attacker-controlled bytes. It affect…

    GNU gawk gawk gawk Debian Ubuntu Azure Linux

References

  • article
    https://access.redhat.com/security/updates/classification/#moderate
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2499655
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2499657
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2499658
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_73429.json
  • report
    https://access.redhat.com/security/cve/CVE-2026-40467
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-40467
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-40467
  • article
    https://cert.pl/en/posts/2026/07/CVE-2026-40467
  • article
    https://cgit.git.savannah.gnu.org/cgit/gawk.git/commit/?id=a2d18c74109e41bec29a23098eba2e00057286d8
  • report
    https://access.redhat.com/security/cve/CVE-2026-40468
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-40468
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-40468
  • article
    https://cgit.git.savannah.gnu.org/cgit/gawk.git/commit/?id=062f2f2581b991362c046f7f2e238ffa34e6f8c7
  • report
    https://access.redhat.com/security/cve/CVE-2026-40553
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-40553
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-40553
  • article
    https://cgit.git.savannah.gnu.org/cgit/gawk.git/commit/?id=cca0366144336b49aaa7d5d949966ce8e2c70843