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AlmaLinux 9.2 [TuxCare] Security Update: libslirp / libslirp-devel (ALMALINUX9.2:CLSA-2026:1794351548)

high Nessus Plugin ID 378702

Synopsis

The AlmaLinux host is missing one or more security updates.

Description

The AlmaLinux 9.2 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1794351548 advisory.

 - A heap-based buffer overflow was found in the DHCPv6 and TFTP response builders of libslirp. When the host is configured with a small interface MTU, a guest-supplied DHCPv6 CLIENTID option or TFTP blksize option can overflow the reply buffer with attacker-controlled content and length, resulting in denial of service and potentially arbitrary code execution in the host process. The default interface MTU is not affected.
 (CVE-2026-95508)

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

Solution

Update the affected packages based on the guidance in TuxCare advisory ALMALINUX9.2:CLSA-2026:1794351548.

See Also

https://cve.tuxcare.com/els/releases/CLSA-2026:1794351548

http://www.nessus.org/u?47c0a816

Plugin Details

Severity: High

ID: 378702

File Name: tuxcare_alma_linux_9.2_CLSA-2026-1794351548.nasl

Version: 1.1

Type: Local

Published: 11/11/2026

Updated: 11/11/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.55

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: High

Base Score: 7.1

Temporal Score: 5.3

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

CVSS Score Source: CVE-2026-95508

CVSS v3

Risk Factor: High

Base Score: 7.4

Temporal Score: 6.4

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

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

Vulnerability Information

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/AlmaLinux/release, Host/AlmaLinux/rpm-list, Host/OS/extended-third-party

Exploit Ease: No known exploits are available

Patch Publication Date: 11/10/2026

Vulnerability Publication Date: 9/22/2026

Reference Information

CVE: CVE-2026-95508

CLSA: 2026:1794351548