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openSUSE Leap 16.0 GnuTLS Important Security Update 2026-20778-1

opensuse
Calendar Grey May 25, 2026
Dist Opensuse Esm H88
This important security update for openSUSE addresses 13 vulnerabilities in gnutls with effective fixes available for installation.
An update that solves 13 vulnerabilities and has 13 bug fixes can now be installed.

Description

This update for gnutls fixes the following issues

- CVE-2026-3832: cert-session: fix multi-entry OCSP revocation bypass (bsc#1263706).

- CVE-2026-3833: x509/name-constraints: compare domain names case-insensitive (bsc#1263707).

- CVE-2026-5260: lib/pkcs11_privkey: guard against overreading on short ciphertexts (bsc#1263715).

- CVE-2026-5419: gnutls_cipher_decrypt3: make PKCS#7 unpadding branch free (bsc#1263716).

- CVE-2026-33845: buffers: switch from end_offset over to frag_length (bsc#1263704).

- CVE-2026-33846: buffers: add more checks to DTLS reassembly (bsc#1263705).

- CVE-2026-42009: lib/buffers: ensure packets have differing sequence numbers (bsc#1263708).

- CVE-2026-42010: lib/auth/rsa_psk: fix binary PSK identity lookup (bsc#1263709).

- CVE-2026-42011: x509/name_constraints: fix intersecting empty constraints (bsc#1263710).

- CVE-2026-42012: x509/hostname-verify: make URI/SRV SAN preclude CN fallback (bsc#1263711).

- CVE-2026-42013: x509: prevent fallback on oversized SAN...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory update important system fix gnutls OpenSUSE

Patch

Package List

- openSUSE Leap 16.0:

gnutls-3.8.10-160000.3.1

libgnutls-devel-3.8.10-160000.3.1

libgnutls-devel-doc-3.8.10-160000.3.1

libgnutls30-3.8.10-160000.3.1

libgnutlsxx-devel-3.8.10-160000.3.1

libgnutlsxx30-3.8.10-160000.3.1

References

* bsc#1263704

* bsc#1263705

* bsc#1263706

* bsc#1263707

* bsc#1263708

* bsc#1263709

* bsc#1263710

* bsc#1263711

* bsc#1263712

* bsc#1263713

* bsc#1263714

* bsc#1263715

* bsc#1263716

References:

* https://www.suse.com/security/cve/CVE-2026-33845.html

* https://www.suse.com/security/cve/CVE-2026-33846.html

* https://www.suse.com/security/cve/CVE-2026-3832.html

* https://www.suse.com/security/cve/CVE-2026-3833.html

* https://www.suse.com/security/cve/CVE-2026-42009.html

* https://www.suse.com/security/cve/CVE-2026-42010.html

* https://www.suse.com/security/cve/CVE-2026-42011.html

* https://www.suse.com/security/cve/CVE-2026-42012.html

* https://www.suse.com/security/cve/CVE-2026-42013.html

* https://www.suse.com/security/cve/CVE-2026-42014.html

* https://www.suse.com/security/cve/CVE-2026-42015.html

* https://www.suse.com/security/cve/CVE-2026-5260.html

* https://www.suse.com/security/cve/CVE-2026-5419.html

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: openSUSE-SU-2026:20778-1
Rating: important
Affected Products: openSUSE Leap 16.0 -------------------------------------------------------------

Topics%20covered

Topics Covered

security advisory update important system fix gnutls OpenSUSE

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