CVE-2026-120831 (GCVE-0-2026-120831)

Vulnerability from cvelistv5 – Published: 2026-11-03 01:55 – Updated: 2026-11-03 15:08
VLAI
Title
Libslirp: libslirp: queue pointer corruption in if_output() leading to denial of service
Summary
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.
Severity
6.5 (Medium)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-03 15:08 UTC
CWE
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1088 records in the last 180 days details
References
Impacted products
Date Public
2026-10-30 00:00
Credits
Red Hat would like to thank Piyusha Akash (Manifold Operations) for reporting this issue.
Show details on NVD website
To clipboard 

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