[pkg-gnupg-maint] Bug#1124220: gnupg2: CVE-2025-68972

[Salvatore Bonaccorso]

Source: gnupg2
Version: 2.4.8-4
Severity: important
Tags: security upstream
X-Debbugs-Cc: carnil at debian.org, Debian Security Team <team at security.debian.org>

Hi,

The following vulnerability was published for gnupg2.

CVE-2025-68972[0]:
| In GnuPG through 2.4.8, if a signed message has \f at the end of a
| plaintext line, an adversary can construct a modified message that
| places additional text after the signed material, such that
| signature verification of the modified message succeeds (although an
| "invalid armor" message is printed during verification). This is
| related to use of \f as a marker to denote truncation of a long
| plaintext line.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2025-68972
    https://www.cve.org/CVERecord?id=CVE-2025-68972

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore