CVE-2025-68973

Name
CVE-2025-68973
Description
In GnuPG before 2.4.9, armor_filter in g10/armor.c has two increments of an index variable where one is intended, leading to an out-of-bounds write for crafted input. (For ExtendedLTS, 2.2.51 and later are fixed versions.)
NVD Severity
medium
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
cve@mitre.org https://github.com/gpg/gnupg/blob/ff30683418695f5d2cc9e6cf8c9418e09378ebe4/g10/armor.c#L1305-L1306
cve@mitre.org https://github.com/gpg/gnupg/commit/115d138ba599328005c5321c0ef9f00355838ca9
cve@mitre.org https://gpg.fail/memcpy
cve@mitre.org https://news.ycombinator.com/item?id=46403200
cve@mitre.org https://www.openwall.com/lists/oss-security/2025/12/28/5
cve@mitre.org https://github.com/gpg/gnupg/compare/gnupg-2.2.50...gnupg-2.2.51
af854a3a-2127-422b-91ae-364da2661108 http://www.openwall.com/lists/oss-security/2025/12/29/11
cve@mitre.org https://media.ccc.de/v/39c3-to-sign-or-not-to-sign-practical-vulnerabilities-i
af854a3a-2127-422b-91ae-364da2661108 https://lists.debian.org/debian-lts-announce/2026/01/msg00008.html

Match rules

CPE URI Source package Min version Max version
gnupg >= 0 < 2.2.51
gnupg >= 2.3.0 < 2.4.9

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
gnupg edge-main 2.4.9-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
gnupg edge-main 2.4.8-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
gnupg edge-main 2.4.8-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
gnupg edge-main 2.4.7-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
gnupg edge-main 2.2.41-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
gnupg edge-main 2.2.40-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
gnupg edge-main 2.2.35-r4 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
gnupg edge-main 2.2.23-r0 None possibly vulnerable
gnupg edge-main 2.2.18-r0 None possibly vulnerable
gnupg edge-main 2.2.13-r0 None possibly vulnerable
gnupg edge-main 2.2.8-r0 None possibly vulnerable
gnupg 3.23-main 2.4.9-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
gnupg 3.23-main 2.4.8-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
gnupg 3.22-main 2.4.9-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
gnupg 3.22-main 2.4.7-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
gnupg 3.22-main 2.2.35-r4 None possibly vulnerable
gnupg 3.22-main 2.2.23-r0 None possibly vulnerable
gnupg 3.22-main 2.2.18-r0 None possibly vulnerable
gnupg 3.22-main 2.2.8-r0 None possibly vulnerable
gnupg 3.21-main 2.4.9-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
gnupg 3.21-main 2.4.7-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
gnupg 3.21-main 2.2.35-r4 None possibly vulnerable
gnupg 3.21-main 2.2.23-r0 None possibly vulnerable
gnupg 3.21-main 2.2.18-r0 None possibly vulnerable
gnupg 3.21-main 2.2.8-r0 None possibly vulnerable
gnupg 3.20-main 2.4.9-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
gnupg 3.20-main 2.4.5-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
gnupg 3.20-main 2.2.35-r4 None possibly vulnerable
gnupg 3.20-main 2.2.23-r0 None possibly vulnerable
gnupg 3.20-main 2.2.18-r0 None possibly vulnerable
gnupg 3.20-main 2.2.8-r0 None possibly vulnerable
gnupg 3.19-main 2.4.4-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
gnupg 3.19-main 2.2.35-r4 None possibly vulnerable
gnupg 3.19-main 2.2.23-r0 None possibly vulnerable
gnupg 3.19-main 2.2.18-r0 None possibly vulnerable
gnupg 3.19-main 2.2.8-r0 None possibly vulnerable