Bug 2499657 (CVE-2026-40553) - CVE-2026-40553 gawk: Gawk: Buffer overflow in ftype() routine may lead to code execution or denial of service
Summary: CVE-2026-40553 gawk: Gawk: Buffer overflow in ftype() routine may lead to cod...
Keywords:
Status: NEW
Alias: CVE-2026-40553
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2510603
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-13 13:01 UTC by OSIDB Bzimport
Modified: 2026-10-01 15:52 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2026:73751 0 None None None 2026-09-30 05:05:37 UTC
Red Hat Product Errata RHSA-2026:73429 0 None None None 2026-09-29 16:39:43 UTC
Red Hat Product Errata RHSA-2026:73512 0 None None None 2026-09-29 18:11:20 UTC

Description OSIDB Bzimport 2026-07-13 13:01:54 UTC 
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. It affects gawk in versions 5.4.0 and below.
Comment 3 Jon Orris 2026-09-29 16:39:42 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:73429 https://access.redhat.com/errata/RHSA-2026:73429
Comment 4 Jon Orris 2026-09-29 18:11:18 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:73512 https://access.redhat.com/errata/RHSA-2026:73512
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