[ CVE-2026-120831 · Published 3 Nov 2026 ]
Vulnerability in Red Hat Enterprise Linux 10
CVSS 6.5
EPSS <1%No fix listed yet
[ Description ]Official 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.
[ Fixes ]Fixes and patches
No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.