This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page.
View CVE-2026-18739 →
DEBIAN-CVE-2026-18739
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 a...
Original description
The description as published by the source.
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.
Source: OSV.dev (Open Source Vulnerabilities) OSV
Affected packages
Debian:12
popt
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Debian:13
popt
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Debian:14
popt
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
References
- advisory security-tracker.debian.org