RHSA-2026:73511MediumCVSS 4.4

Red Hat Security Advisory: gawk security update

Published
October 2, 2026
Last Modified
October 2, 2026

🔗 CVE IDs covered (2)

CVE-2026-40467 →CVE-2026-40468 →

📋 Description

CVE-2026-40467 — gawk: gawk: Denial of Service due to Use After Free vulnerability in io.c CVE-2026-40468 — gawk: gawk: Memory corruption via integer overflow

🎯 Affected products14

  • Red Hat Enterprise Linux BaseOS (v. 8)
  • gawk-0:4.2.1-5.el8_10.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • gawk-0:4.2.1-5.el8_10.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • gawk-0:4.2.1-5.el8_10.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • gawk-0:4.2.1-5.el8_10.src as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • gawk-0:4.2.1-5.el8_10.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • gawk-debuginfo-0:4.2.1-5.el8_10.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • gawk-debuginfo-0:4.2.1-5.el8_10.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • gawk-debuginfo-0:4.2.1-5.el8_10.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • gawk-debuginfo-0:4.2.1-5.el8_10.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • gawk-debugsource-0:4.2.1-5.el8_10.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • gawk-debugsource-0:4.2.1-5.el8_10.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • gawk-debugsource-0:4.2.1-5.el8_10.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • gawk-debugsource-0:4.2.1-5.el8_10.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Workaround: To mitigate this issue, users should avoid processing untrusted or maliciously crafted input with `gawk`. Exercise caution when executing `gawk` scripts or commands that process data from unknown or unverified sources. Workaround: Do not execute untrusted awk scripts or process untrusted inputs that could trigger oversized calculations in builtin.c.

🔗 References (5)