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2.5 Low

CVE-2026-18739 Popt-devel: popt-static: off-by-one in poptstuffargs

Description

A flaw was found in popt, a command-line option parsing library. An off-by-one error in the poptStuffArgs function, when repeatedly called by a host application or through deep alias nesting, can lead to corruption of internal program data. This corruption could potentially enable a local attacker to execute arbitrary code if the host application then unsafely processes the altered data.

CVSS 3.1 detail

Vector CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

Exploitable with local access to the machine, with an ordinary account and without any user action; the impact on data or service is limited.

Attack vector
Local
Attack complexity
High
Privileges required
Low
Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

Affected products and versions

Product Affected versions Fixed in
Red Hat Enterprise Linux 10 Versions not published
Red Hat Enterprise Linux 6 Versions not published
Red Hat Enterprise Linux 7 Versions not published
Red Hat Enterprise Linux 8 Versions not published
Red Hat Enterprise Linux 9 Versions not published
Red Hat Hardened Images 1.19 earliest → < 1.19-11.1.hum1 1.19-11.1.hum1
Red Hat OpenShift Container Platform 4 Versions not published
popt 1.1 1.1.1 → latest No fix stated
Red Hat OpenShift AI (RHOAI) Versions not published
Show the other branch
Product Affected versions Fixed in
Red Hat OpenShift Container Platform 5 Versions not published

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