Bug 2511010 (CVE-2026-18839) - CVE-2026-18839 popt-devel: popt-static: size_t underflow in singleOptionHelp
Summary: CVE-2026-18839 popt-devel: popt-static: size_t underflow in singleOptionHelp
Keywords:
Status: NEW
Alias: CVE-2026-18839
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2514785
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-04 14:34 UTC by OSIDB Bzimport
Modified: 2026-08-12 15:59 UTC (History)
7 users (show)

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

Attachments (Terms of Use)

Description OSIDB Bzimport 2026-08-04 14:34:44 UTC 
Summary: columns->max - indentLength wraps when indent exceeds width; may fail malloc or (reporter) OOB NUL write on help path.

Flow: Application option table + narrow terminal / large option width → help formatting → underflow.

Found back in `popt-1_13-release` tag.
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