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Medium ELSA-2026-73429 3 CVEs

Moderate: gawk security update (Oracle Linux 10)

Published Sep 30, 2026 · Updated Sep 30, 2026

Ecosystem: Oracle Linux

Summary

[5.3.0-6.1]
- Fix use after free in io.c
- Fix buffer overflow in extensions/readdir.c
- Fix integer overflow in buildin.c
Resolves: CVE-2026-40467
Resolves: CVE-2026-40468
Resolves: CVE-2026-40553

Fixed packages 2

ReleasePackageFixed in
Oracle Linux · 10 gawk 0:5.3.0-6.el10_2.1
Oracle Linux · 10 gawk-all-langpacks 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