SUSE SLES15 Security Update : ovmf (SUSE-SU-2026:1952-1)

high Nessus Plugin ID 315270

Synopsis

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

Description

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1952-1 advisory.

This update for ovmf fixes the following issues

- CVE-2026-25833: mbedtls: buffer underflow in x509_inet_pton_ipv6() (bsc#1261476).
- CVE-2026-25834: mbedtls: Algorithm downgrade vulnerability (bsc#1261477).
- CVE-2026-25835: mbedtls: PSA random generator cloning (bsc#1261478).
- CVE-2026-34874: mbedtls: NULL pointer dereference when setting a distinguished name (bsc#1261469).

Changes for ovmf:

- Update mbedtls to 3.6.6.

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 packages.

Plugin Details

Severity: High

ID: 315270

File Name: suse_SU-2026-1952-1.nasl

Version: 1.1

Type: Local

Agent: unix

Family: SuSE Local Security Checks

Published: 5/19/2026

Updated: 5/19/2026

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Medium

Base Score: 6.6

Temporal Score: 4.9

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

CVSS Score Source: CVE-2026-25835

CVSS v3

Risk Factor: High

Base Score: 7.7

Temporal Score: 6.7

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

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

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:qemu-uefi-aarch32, p-cpe:/a:novell:suse_linux:ovmf-tools, p-cpe:/a:novell:suse_linux:qemu-ovmf-x86_64, p-cpe:/a:novell:suse_linux:qemu-uefi-aarch64, p-cpe:/a:novell:suse_linux:ovmf, p-cpe:/a:novell:suse_linux:qemu-ovmf-x86_64-debug, cpe:/o:novell:suse_linux:15

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: 5/18/2026

Vulnerability Publication Date: 4/1/2026

Reference Information

CVE: CVE-2026-25833, CVE-2026-25834, CVE-2026-25835, CVE-2026-34874

SuSE: SUSE-SU-2026:1952-1

Detections

Analytics