Description
In GnuPG before 2.5.17, a long signature packet length causes parse_signature to return success with sig->data[] set to a NULL value, leading to a denial of service (application crash).
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| GnuPG | GnuPG | 2.5.3 – < 2.5.17 | 2.5.17 |
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.
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | gpg2 | 2.5.5-160000.4.1 | SUSE-SU-2026:20195-1 |
| SLES 16.0 | gpg2 | 2.5.5-160000.4.1 | SUSE-SU-2026:20195-1 |
| SLE Micro 6.2 | gpg2 | 2.5.5-160000.4.1 | SUSE-SU-2026:20179-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | gpg2 | 2.5.17-1.1 | openSUSE-SU-2026:10112-1 |
| openSUSE Leap 16.0 | gpg2 | 2.5.5-160000.4.1 | openSUSE-SU-2026:20136-1 |
Advisories 5
- WID-SEC-2026-0231 GnuPG und Gpg4win: Mehrere Schwachstellen BSI CERT-Bund (WID) · Mar 23, 2026
- openSUSE-SU-2026:20136-1 Security update for gpg2 SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2026:10112-1 dirmngr-2.5.17-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:20195-1 Security update for gpg2 SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:20179-1 Security update for gpg2 SUSE / openSUSE Security Updates · Mar 23, 2026