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openSUSE gnutls Important Buffer Overflow Issues Vuln 2026-2115-1

opensuse
Calendar Grey May 29, 2026
Dist Opensuse Esm H88
Critical update for openSUSE's gnutls addresses multiple vulnerabilities, ensuring system security and performance.
An update that solves 12 vulnerabilities can now be installed.

Description

This update for gnutls fixes the following issues

* 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 (bsc#1263712).

* CVE-2026-42014:...

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Topics%20covered

Topics Covered

security advisory buffer overflow remote access important gnutls OpenSUSE

Patch

## Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like

YaST online_update or "zypper patch".

Alternatively you can run the command listed for your product:

* openSUSE Leap 15.6

zypper in -t patch SUSE-2026-2115=1

* SUSE Linux Enterprise Server 15 SP6 LTSS

zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-2115=1

* SUSE Linux Enterprise Server for SAP Applications 15 SP6

zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP6-2026-2115=1

* Basesystem Module 15-SP7

zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2026-2115=1

Package List

* openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64 i586)

* libgnutlsxx30-debuginfo-3.8.3-150600.4.20.1

* gnutls-debugsource-3.8.3-150600.4.20.1

* libgnutls30-debuginfo-3.8.3-150600.4.20.1

* libgnutls-devel-3.8.3-150600.4.20.1

* gnutls-debuginfo-3.8.3-150600.4.20.1

* gnutls-3.8.3-150600.4.20.1

* libgnutlsxx-devel-3.8.3-150600.4.20.1

* libgnutlsxx30-3.8.3-150600.4.20.1

* libgnutls30-3.8.3-150600.4.20.1

* openSUSE Leap 15.6 (x86_64)

* libgnutls30-32bit-debuginfo-3.8.3-150600.4.20.1

* libgnutls30-32bit-3.8.3-150600.4.20.1

* libgnutls-devel-32bit-3.8.3-150600.4.20.1

* openSUSE Leap 15.6 (aarch64_ilp32)

* libgnutls30-64bit-3.8.3-150600.4.20.1

* libgnutls-devel-64bit-3.8.3-150600.4.20.1

* libgnutls30-64bit-debuginfo-3.8.3-150600.4.20.1

* SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64 ppc64le s390x x86_64)

* libgnutlsxx30-debuginfo-3.8.3-150600.4.20.1

* libgnutls30-debuginfo-3.8.3-150600.4.20.1

* gnutls-debugsource-3.8.3-150600.4.20.1

* libgnutls-devel-3.8.3-150600.4.20.1

* gnutls-debuginfo-3.8.3-150600.4.20.1

*...

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References

* bsc#1263704

* bsc#1263705

* 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-2026-3833.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

* https://bugzilla.suse.com/show_bug.cgi?id=1263704

* https://bugzilla.suse.com/show_bug.cgi?id=1263705

* https://bugzilla.suse.com/show_bug.cgi?id=1263707

*...

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Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:2115-1
Release Date: 2026-05-29T15:27:37Z
Affected Products: * Basesystem Module 15-SP7 * openSUSE Leap 15.6 * SUSE Linux Enterprise Desktop 15 SP7 * SUSE Linux Enterprise Real Time 15 SP7 * SUSE Linux Enterprise Server 15 SP6 * SUSE Linux Enterprise Server 15 SP6 LTSS * SUSE Linux Enterprise Server 15 SP7 * SUSE Linux Enterprise Server for SAP Applications 15 SP6 * SUSE Linux Enterprise Server for SAP Applications 15 SP7

Topics%20covered

Topics Covered

security advisory buffer overflow remote access important gnutls OpenSUSE

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