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CVE-2026-80714

CRITICALCVSS 9.8/10EPSS 0.16%

Last modified

CVE-2026-80714 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. EPSS estimates a 0.16% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1
9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.16%

5.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 26ec037f9841e49cc5c615deb8e1e73e5beab2ca, < 06d1d9b56ef8132fbf85006885eb43d9510b8b02; >= 26ec037f9841e49cc5c615deb8e1e73e5beab2ca, < acbdc276091b308ca7794acb86e761f8203e2f59; >= 26ec037f9841e49cc5c615deb8e1e73e5beab2ca, < 300348e3ba1521b003d59825f97e24f9a6859688; >= 26ec037f9841e49cc5c615deb8e1e73e5beab2ca, < 44af98cc7d5ef8e730488d5df1eecd5deeaa5947; >= 26ec037f9841e49cc5c615deb8e1e73e5beab2ca, < 4649e6faeecdc2d44bfa6ccbe405eef27e55d816; >= 26ec037f9841e49cc5c615deb8e1e73e5beab2ca, < b5ee5b266f833601ac4817f6df0bc496fc376a28; >= 26ec037f9841e49cc5c615deb8e1e73e5beab2ca, < e7acfc990c29890c883d0d0ce3f737d003a43b44; >= 26ec037f9841e49cc5c615deb8e1e73e5beab2ca, < a63d2dbaeb50a85d4c976b15a36e6b0c7113db5b
LinuxLinux2.6.36

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-80714?
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.
How severe is CVE-2026-80714?
CVE-2026-80714 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.16% probability of exploitation in the next 30 days.
How do I fix CVE-2026-80714?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST