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Medium RHSA-2026:49661 4 CVEs

Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update

Published Aug 5, 2026 · Updated Oct 15, 2026

Ecosystem: Red Hat

Fixed packages 4

ReleasePackageFixed in
Red Hat · Hardened Images 1 hummingbird:1 gawk 0:5.4.1-1.hum1
Red Hat · Hardened Images 1 hummingbird:1 gawk-all-langpacks 0:5.4.1-1.hum1
Red Hat · Hardened Images 1 hummingbird:1 gawk-devel 0:5.4.1-1.hum1
Red Hat · Hardened Images 1 hummingbird:1 gawk-doc 0:5.4.1-1.hum1

Vulnerabilities 4

  • 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-2026-40469

    Heap buffer overflow in gawk

    Integer overflow vulnerability has been found in "builtin.c" program file of gawk (do_sub() routine). This issue could be used to overwrite gawk heap metadata and objects causing the program to crash. It affects 32-bit builds of gawk in versions 5.4.0 and bel…

    GNU gawk gawk gawk Debian Ubuntu
  • 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

  • report
    https://access.redhat.com/security/cve/CVE-2026-40467
  • report
    https://access.redhat.com/security/cve/CVE-2026-40468
  • report
    https://access.redhat.com/security/cve/CVE-2026-40469
  • report
    https://access.redhat.com/security/cve/CVE-2026-40553
  • article
    https://access.redhat.com/security/updates/classification/
  • article
    https://images.redhat.com/
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_49661.json
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2499658
  • 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://bugzilla.redhat.com/show_bug.cgi?id=2499655
  • 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://bugzilla.redhat.com/show_bug.cgi?id=2499656
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-40469
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-40469
  • article
    https://cgit.git.savannah.gnu.org/cgit/gawk.git/commit/?id=ae1b2d508f46913269a9e62aceda3636afe8147b
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2499657
  • 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