Critical 9.8Published Aug 28, 2026

CVE-2026-80714ipvs: do not propagate one-packet flag to synced conns

Updated under an hour ago (Oct 27, 2026, 2:30 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: ipvs: do not propagate one-packet flag to synced conns Synced connections can be created before their destination exists. When the destination is later added, ip_vs_bind_dest() copies connection flags from the destination into cp->flags. IP_VS_CONN_F_ONE_PACKET connections are not synced. If a synced connection inherits IP_VS_CONN_F_ONE_PACKET while it is already hashed, expiry can treat it as a one-packet connection and skip unlinking the existing conn_tab node, leaving stale hash nodes pointing at a freed struct ip_vs_conn. Drop IP_VS_CONN_F_ONE_PACKET from destination flags when binding synced connections.

CVSS: 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Received
Record last updated: Oct 16, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	26ec037f9841e49cc5c615deb8e1e73e5beab2ca builds before 06d1d9b56ef8132fbf85006885eb43d9510b8b02; from 26ec037f9841e49cc5c615deb8e1e73e5beab2ca before acbdc276091b308ca7794acb86e761f8203e2f59; from 26ec037f9841e49cc5c615deb8e1e73e5beab2ca before 300348e3ba1521b003d59825f97e24f9a6859688; from 26ec037f9841e49cc5c615deb8e1e73e5beab2ca before 44af98cc7d5ef8e730488d5df1eecd5deeaa5947; from 26ec037f9841e49cc5c615deb8e1e73e5beab2ca before 4649e6faeecdc2d44bfa6ccbe405eef27e55d816; from 26ec037f9841e49cc5c615deb8e1e73e5beab2ca before b5ee5b266f833601ac4817f6df0bc496fc376a28; from 26ec037f9841e49cc5c615deb8e1e73e5beab2ca before e7acfc990c29890c883d0d0ce3f737d003a43b44; from 26ec037f9841e49cc5c615deb8e1e73e5beab2ca before a63d2dbaeb50a85d4c976b15a36e6b0c7113db5b	CNA record

References

References

https://git.kernel.org/stable/c/06d1d9b56ef8132fbf85006885eb43d9510b8b02
https://git.kernel.org/stable/c/acbdc276091b308ca7794acb86e761f8203e2f59
https://git.kernel.org/stable/c/300348e3ba1521b003d59825f97e24f9a6859688
https://git.kernel.org/stable/c/44af98cc7d5ef8e730488d5df1eecd5deeaa5947
https://git.kernel.org/stable/c/4649e6faeecdc2d44bfa6ccbe405eef27e55d816
https://git.kernel.org/stable/c/b5ee5b266f833601ac4817f6df0bc496fc376a28
https://git.kernel.org/stable/c/e7acfc990c29890c883d0d0ce3f737d003a43b44
https://git.kernel.org/stable/c/a63d2dbaeb50a85d4c976b15a36e6b0c7113db5b

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.