MEDIUMCVSS v3.1 6.5Vulnerability

CVE-2026-120831

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.

Properties

Severity
MEDIUM
Nvd fetched at
2026-11-03T05:05:19.422095+00:00
Cvss score
6.5
Cvss severity
MEDIUM
Retrieved at
2026-11-03T05:06:31+00:00
Score
6.5
Last source
NVD
Cvss version
3.1
Cve id
CVE-2026-120831
Cvss vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
First seen by Signal
2026-11-03T05:01:55+00:00
Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published at
2026-11-03T02:16:53.393
Last modified
2026-11-03T02:16:53.560

Related Entities (1)

HAS_WEAKNESS (1)

→[Weakness]Out-of-bounds Write

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CVE-2026-120831 (CVSS v3.1 6.5) — Ninja Signal Threat Intelligence | Ninja Signal