Libslirp: libslirp: queue pointer corruption in if_output() leading to denial of service
Historical advisory recorded 3 Nov 2026 04:57:16 UTC. Read the latest advisory.
cve-program · CVE-2026-120831
PublishedA 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.
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cve-program · CVE-2026-120831
PublishedLibslirp: libslirp: queue pointer corruption in if_output() leading to denial of service
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.
- Source published
- 3 Nov 2026 01:55:20 UTC
- Source modified
- 3 Nov 2026 01:55:20 UTC
- Saved here
- 3 Nov 2026 04:57:16 UTC
- Source terms
- CVE Program Terms of Use
Original source record · Cite this exact observation · Complete original publisher JSON
Source: cve-program · CVE Program Terms of Use. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.
CVSS 3.1 · 6.5 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H