Popt-devel: popt-static: short realloc in poptconfigfiletostring
Description
CVE-2026-18743 is a low severity vulnerability in the popt library related to a short realloc operation in poptconfigfiletostring. This issue affects certain versions of popt used in Microsoft and Red Hat Hardened Images. A security update is available from Red Hat to address this vulnerability.
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2026-18743 involves a short realloc operation in the poptconfigfiletostring function of the popt library. This flaw is classified under CWE-131 (Incorrect Calculation of Buffer Size), which can lead to memory allocation issues. Red Hat has issued a security advisory (RHSA-2026:56984) providing updated popt packages (version 1.19-11.1.hum1) that fix this vulnerability. The affected packages include popt, popt-devel, and popt-static for aarch64 and x86_64 architectures.
Potential Impact
The vulnerability could potentially lead to incorrect memory allocation due to a short realloc, which may cause stability or security issues in applications using the affected popt library versions. However, the severity is rated low, and there are no known exploits in the wild at this time.
Mitigation Recommendations
A security update is available from Red Hat as detailed in advisory RHSA-2026:56984. Users should apply the updated popt packages (version 1.19-11.1.hum1) for popt, popt-devel, and popt-static to remediate this vulnerability. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-2r56-6h49-5c5r
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-18743"]
- Database Specific Severity
- LOW
- Cvss Version
- 3.1
- State
- PUBLISHED
Patch Information
Threat ID: 6aa0ade3acd9273b497cd025
Added to database: 09/09/2026, 00:52:51 UTC
Last enriched: 10/02/2026, 18:58:18 UTC
Last updated: 10/21/2026, 13:22:12 UTC
Views: 59
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