Description
The mixing functions in the random number generator in Libgcrypt before 1.5.6, 1.6.x before 1.6.6, and 1.7.x before 1.7.3 and GnuPG before 1.4.21 make it easier for attackers to obtain the values of 160 bits by leveraging knowledge of the previous 4640 bits.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | gnupg1 | 1.4.21-1 | — |
| Debian 14 | libgcrypt20 | 1.7.3-1 | — |
| Debian 13 | gnupg1 | 1.4.21-1 | — |
| Debian 13 | libgcrypt20 | 1.7.3-1 | — |
| Debian 12 | gnupg1 | 1.4.21-1 | — |
| Debian 12 | libgcrypt20 | 1.7.3-1 | — |
| Debian 8 | gnupg | 1.4.18-7+deb8u2 | DSA-3649-1 |
| Debian 8 | libgcrypt20 | 1.6.3-2+deb8u2 | DSA-3650-1 |
| Debian 7 | gnupg | 1.4.12-7+deb7u8 | DLA-602-1 |
| Debian 7 | libgcrypt11 | 1.5.0-5+deb7u5 | DLA-600-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | gnupg | 1.4.20-1ubuntu3.1 | USN-3064-1 |
| Ubuntu 16.04 LTS | libgcrypt20 | 1.6.5-2ubuntu0.2 | USN-3065-1 |
| Ubuntu 14.04 LTS | gnupg | 1.4.16-1ubuntu2.4 | USN-3064-1 |
| Ubuntu 14.04 LTS | libgcrypt11 | 1.5.3-2ubuntu4.4 | USN-3065-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | libgcrypt +1 | 1.5.3-13.el7_3.1 | RHSA-2016:2674 |
| RHEL 6 | libgcrypt +1 | 1.4.5-12.el6_8 | RHSA-2016:2674 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | libgcrypt | 1.6.1-16.33.1 | SUSE-SU-2016:2345-1 |
| SLES 11 SP4 | libgcrypt | 1.5.0-0.22.1 | SUSE-SU-2016:2346-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP1 | libgcrypt | 1.6.1-16.33.1 | SUSE-SU-2016:2345-1 |
| SLES for SAP 11 SP4 | libgcrypt | 1.5.0-0.22.1 | SUSE-SU-2016:2346-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | libgcrypt | 1.7.3-1.3 | openSUSE-SU-2024:10037-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.4 | libgcrypt | 1.7.0-r1 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | libgcrypt +1 | 1.5.3-13.el7_3.1 | ELSA-2016-2674 |
Advisories 11
- RHSA-2016:2674 Red Hat Security Advisory: libgcrypt security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-3065-1 libgcrypt11, libgcrypt20 vulnerability Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-600-1 libgcrypt11 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-602-1 gnupg - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3649-1 gnupg - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3650-1 libgcrypt20 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-3064-1 gnupg vulnerability Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2016:2346-1 Security update for libgcrypt SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2345-1 Security update for libgcrypt SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10037-1 libgcrypt-cavs-1.7.3-1.3 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- ELSA-2016-2674 Moderate: libgcrypt security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 9, 2016
References
- DSA-3650 vendor-advisory
- GLSA-201612-01 vendor-advisory
- USN-3064-1 vendor-advisory
- DSA-3649 vendor-advisory
- GLSA-201610-04 vendor-advisory
- 1036635 vdb-entry
- [gnupg-announce] 20160817 [Announce] Security fixes for Libgcrypt and GnuPG 1.4 [CVE-2016-6316] mailing-list
- https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=blob_plain%3Bf=NEWS
- RHSA-2016:2674 vendor-advisory
- 92527 vdb-entry
- USN-3065-1 vendor-advisory