CVE-2025-68973

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.)

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.4 / Impact : 5.8

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/gpg/gnupg/blob/ff30683418695f5d2cc9e6cf8c9418e09378ebe4/g10/armor.c#L1305-L1306	Product
https://github.com/gpg/gnupg/commit/115d138ba599328005c5321c0ef9f00355838ca9	Patch
https://github.com/gpg/gnupg/compare/gnupg-2.2.50...gnupg-2.2.51	Patch
https://gpg.fail/memcpy	Broken Link
https://media.ccc.de/v/39c3-to-sign-or-not-to-sign-practical-vulnerabilities-i	Issue Tracking
https://news.ycombinator.com/item?id=46403200	Issue Tracking
https://www.openwall.com/lists/oss-security/2025/12/28/5	Mailing List
http://www.openwall.com/lists/oss-security/2025/12/29/11	Mailing List Patch
https://lists.debian.org/debian-lts-announce/2026/01/msg00008.html
https://gpg.fail/memcpy	Broken Link

Configurations

Configuration 1 (hide)

cpe:2.3:a:gnupg:gnupg:*:*:*:*:-:*:*:*

History

No history.

Information

Published : 2025-12-28 17:16

Updated : 2026-01-14 19:16

NVD link : CVE-2025-68973

Mitre link : CVE-2025-68973

CVE.ORG link : CVE-2025-68973

JSON object : View

Products Affected

gnupg

gnupg

CWE

CWE-675

Multiple Operations on Resource in Single-Operation Context

CWE-787

Out-of-bounds Write

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