CVE-2026-18743

NameCVE-2026-18743
DescriptionA flaw was found in popt. This vulnerability allows an attacker to provide specially crafted configuration content to a host, which, when loaded, can lead to a small memory corruption issue. This occurs because of an error in how the `poptConfigFileToString` function reallocates memory for buffers. Successful exploitation could result in heap metadata corruption, potentially causing the affected process to become unavailable (denial of service).
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
popt (PTS)bookworm1.19+dfsg-1vulnerable
forky, sid, trixie1.19+dfsg-2vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
poptsource(unstable)(unfixed)unimportant

Notes

https://bugzilla.redhat.com/show_bug.cgi?id=2510809
Crosses no security boundary

Search for package or bug name: Reporting problems