CVE-2026-120831

MediumCVSS 6.5/10Last modified Nov 5, 2026

Description

A flaw was found in libslirp in if_output(). When moving a session from the fast queue to the batch queue, the code unlinked and reinserted an arbitrary packet via ifm->m_nextpkt instead of the session queue head, corrupting queue pointers. A guest generating burst traffic could crash the host networking process, causing a denial of service.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-787

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

No affected versions have been published.

Timeline

Published: Nov 3, 2026
Last modified: Nov 5, 2026
NVD status: Awaiting Analysis

Related CVEs from 2026

CVE-2026-1208326.5Server-Side Request Forgery (SSRF) vulnerability in Apache Axis2/Java. When Axis2 built a service description from a WSDL, through ServiceCl CVE-2026-1208337.8labbench before 0.46.1 contains a deserialization of untrusted data vulnerability in read() and read_relational() that passes any file with CVE-2026-1208347.3Incorrect Privilege Assignment vulnerability in Tobias WP2LEADS wp2leads allows Privilege Escalation.This issue affects WP2LEADS: from n/a t CVE-2026-1208366.5Missing Authorization vulnerability in eLightUp Meta Box – WordPress Custom Fields Framework meta-box allows Exploiting Incorrectly Configur CVE-2026-1208374.3Missing Authorization vulnerability in Everest Forms Everest Forms everest-forms allows Exploiting Incorrectly Configured Access Control Sec CVE-2026-1208386.5Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Plugins360 Labs All-in-One Video Galle CVE-2026-1208398.8Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in Magepeople inc. WpT CVE-2026-120847.5IBM UCD - IBM DevOps Deploy 8.1 through 8.1.2.6, and 8.2 through 8.2.1.0 uses Cross-Origin Resource Sharing (CORS) which could allow an atta CVE-2026-1208404.3Missing Authorization vulnerability in ThemeGrill User Registration user-registration allows Exploiting Incorrectly Configured Access Contro CVE-2026-1208418.8Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in Magepeople inc. WpT CVE-2026-1208425.3Missing Authorization vulnerability in Brainstorm Force SureForms sureforms allows Exploiting Incorrectly Configured Access Control Security CVE-2026-1208436.5Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Barn2 Plugins Posts Table with Search