SUSE SLED15 / SLES15 Security Update : liboqs, oqs-provider (SUSE-SU-2026:3420-1)

medium Nessus Plugin ID 331425

Synopsis

The remote SUSE host is missing one or more security updates.

Description

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:3420-1 advisory.

- disable KEM_HQC and SIG_MQOM and KEM_NTRUPRIME on s390x for now, testsuite shows them not working.

Updated to 0.16.0:

Deprecation notice:

- SPHINCS+ was removed in 0.16.0.

Security issues:

- Fixed uninitialized `encaps_derand` pointer dereference
- CVE-2026-46344, CVE-2026-44518: Fixed out-of-bounds read in XMSS/XMSS^MT signature verification (bsc#1267007 bsc#1267001)
- Fixed Integer underflow in CROSS `crypto_sign_open()`
- Fixed incorrect array size when calling `secure_clean`
- Implemented optimization barrier `OQS_MEM_BLACK_BOX` and applied to `ct_select` in FrodoKEM

Significant change:

FrodoKEM algorithm change:

* Existing FrodoKEM in 0.15.0 was renamed to ephemeral FrodoKEM (`KEM_efrodokem_<640|976|1344>_<aes|shake>`), and the salted variant of FrodoKEM was added under the prior names (`KEM_frodokem_<640|976|1344>_<aes|shake>`).
Ephemeral FrodoKEM is recommended for applications where each keypair will encapsulate only a small number of shared secrets and ciphertexts. Standard (salted) FrodoKEM is recommended for applications where each keypair is expected to encapsulate large number of ciphertexts. Please consult [upstream](https://github.com/microsoft/PQCrypto-LWEKE/#frodokem-learning-with-errors-key- encapsulation) for more details.
* mldsa-native integration:
mldsa-native is a secure, fast, and portable C90 implementation of the ML-DSA post-quantum signature standard. It also includes optimized builds for x86_64 and aarch64. It is now the default implementation behind `SIG_ml_dsa_<44|65|87>`.
* Updated HQC implementation:
The HQC implementations in liboqs were updated to 20250822 spec. Its upstream switched from PQClean to the [official repo](https://gitlab.com/pqc-hqc/hqc). `KEM_hqc_<1|3|5>` is now enabled by default.
* MQOM integration and memory-optimized build flag:
MQOM is a third-round candidate in NIST's Additional Digital Signatures for the PQC Standardization Process. Portable, x86_64-optimized, and memory-optimized implementations were integrate?into liboqs under `OQS_ENABLE_SIG_MQOM`.
* OpenSSH implementation of NTRU Prime:
A public-domain OpenSSH implementation of NTRUPrime761 replaced the PQClean implementation as the default backend for `KEM_ntruprime_sntrup761`.

Bug fixes:

- Fixed incremental absorption bug in AVX512VL SHA3-512 [#2442](https://github.com/open-quantum- safe/liboqs/pull/2442)
- Implemented fallback for when `EVP_DigestSqueeze` is unavailable [#2433](https://github.com/open- quantum-safe/liboqs/pull/2433)
- Added API for detecting stateful signature support at runtime [#2434](https://github.com/open-quantum- safe/liboqs/pull/2434)
- Fixed missing initialization and indexing bug in LMS [#2416](https://github.com/open-quantum- safe/liboqs/pull/2416)
- Fixed erroneous MAYO_OK despite failed sample_solution() attempts in MAYO [#2403](https://github.com/open-quantum-safe/liboqs/pull/2403)
- Limited pytest parallelism to prevent memory exhaustion in constrained environment [#2397](https://github.com/open-quantum-safe/liboqs/pull/2397)
- Fixed cuPQC ML-KEM derand symbol names and `#if/#elif` chains [#2396](https://github.com/open-quantum- safe/liboqs/pull/2396)
- Tightened Windows compiler detection [#2394](https://github.com/open-quantum-safe/liboqs/pull/2394)
- Fixed mismatched macros in LMS [#2379](https://github.com/open-quantum-safe/liboqs/pull/2379)
- Made fuzzers tolerant to disabled algorithms [#2359](https://github.com/open-quantum- safe/liboqs/pull/2359)
- Removed inlined exponentiation in CROSS-RSDPG-1 [#2357](https://github.com/open-quantum- safe/liboqs/pull/2357)
- Fixed incorrect arg register update in AVX512 Keccak [#2330](https://github.com/open-quantum- safe/liboqs/pull/2330)

Update to 0.15.0:

* Significant changes:

- Integrated SLH-DSA implementation from pq-code-package/slhdsa-c
- SLH-DSA ACVP tests (#2237)
- Integrate SLH-DSA-C Library (#2175)
- Added NTRU back (#2176)
- Removed all Dilithium implementations (#2275)
- Replaced SPHINCS+ with SLH-DSA for CMake build option OQS_ALGS_ENABLED=STD (#2290)
- Updated CROSS to version 2.2 (#2247)
- Included DeriveEncapsulation functionality (#2221)
- Integrated ML-KEM implementation from ICICLE-PQC (#2216)

* Bug fixes:

- Fixed erroneously disabled LMS variants with build flag OQS_ENABLE_SIG_STFL_LMS (#2310)
- Fixed incorrect import in OV-III-pkc_skc (#2299)
- Fixed incorrect actual signature length in signature full-cycle speed test (#2293)
- Fixed ICICLE ML-KEM integration (#2288)
- Disabled strict aliasing on SPHINCS+-SHAKE (#2264)
- Fixed uninitialized length_encaps_seed for NTRU implementations (#2266)
- Changed 64 bit add to 32 bit add to wrap on 32 bit counter for AES-CTR AES-NI implementation (#2252)
- Improved random number generator security (#2225)
- Added Classic McEliece sanitization patch (#2218)

* Miscellaneous:

- Deprecated noregress scripts (#2295)
- Updated no-pass explanation for constant-time testing (#2294)
- Re-enabled all ACVP tests (#2283)
- Updated license info for ML-KEM (#2250)
- Added Poutine SASL (#2213)
- Updated ACVP to 1.1.0.40 (#2172)
- Switched to dev mode for 0.14.1 (#2199)

* Deprecation notice: liboqs 0.15.0 is the last version to officially support SPHINCS+. SPHINCS+ will be removed in the 0.16.0 release and replaced by SLH-DSA. liboqs 0.15.0 also removes support for Dilithium.

Updated to 0.14.0:

* Key encapsulation mechanisms:

- HQC: Disabled compiler optimizations to avoid secret-dependent branching in certain configurations.
HQC remains disabled by default.
- ML-KEM: Updated the default ML-KEM implementation to [PQCP's mlkem-native v1.0.0](https://github.com/pq-code-package/mlkem-native/releases/tag/v1.0.0).

* Digital signature schemes:

- New API: added an API function to check if a signature scheme supports signing with a context string.
- SNOVA: added [SNOVA](https://snova.pqclab.org/) from NIST Additional Signature Schemes Round 2.

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected liboqs-devel, liboqs9 and / or oqs-provider packages.

Plugin Details

Severity: Medium

ID: 331425

File Name: suse_SU-2026-3420-1.nasl

Version: 1.1

Type: Local

Agent: unix

Family: SuSE Local Security Checks

Published: 7/31/2026

Updated: 7/31/2026

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.18

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:N/A:N

CVSS Score Source: CVE-2025-52473

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:novell:suse_linux:15, p-cpe:/a:novell:suse_linux:liboqs-devel, p-cpe:/a:novell:suse_linux:liboqs9, p-cpe:/a:novell:suse_linux:oqs-provider

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 7/30/2026

Vulnerability Publication Date: 7/10/2025

Reference Information

CVE: CVE-2025-52473, CVE-2026-44518, CVE-2026-46344

SuSE: SUSE-SU-2026:3420-1

Detections

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