--- id: CVE-2026-80714 title: |- 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 summary: |- 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_bi… severity: critical cvss: 9.8 cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H' cwe: - CWE-825 vendor: Red Hat product: Red Hat Enterprise Linux BaseOS (v. 10) affected: - enterprise_linux 7 - enterprise_linux 9 - enterprise_linux_appstream_v_10 - enterprise_linux_appstream_v_9 - enterprise_linux_baseos_v_10 - enterprise_linux_baseos_v_8 - enterprise_linux_baseos_v_9 - enterprise_linux_codeready_linux_builder_v_10 - enterprise_linux_crb_v_8 - enterprise_linux_codeready_linux_builder_v_9 - enterprise_linux_real_time_for_nfv_v_10 - enterprise_linux_nfv_v_8 - enterprise_linux_real_time_for_nfv_v_9 - enterprise_linux_real_time_v_10 - enterprise_linux_rt_v_8 - enterprise_linux_real_time_v_9 patched: - enterprise_linux_appstream_v_10 - enterprise_linux_appstream_v_9 - enterprise_linux_baseos_v_10 - enterprise_linux_baseos_v_8 - enterprise_linux_baseos_v_9 - enterprise_linux_codeready_linux_builder_v_10 - enterprise_linux_crb_v_8 - enterprise_linux_codeready_linux_builder_v_9 - enterprise_linux_real_time_for_nfv_v_10 - enterprise_linux_nfv_v_8 - enterprise_linux_real_time_for_nfv_v_9 - enterprise_linux_real_time_v_10 - enterprise_linux_rt_v_8 - enterprise_linux_real_time_v_9 published: '2026-08-28' updated: '2026-10-16' sourceUpdated: '2026-10-16T20:18:08.073' source: NVD sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-80714' references: - url: 'https://git.kernel.org/stable/c/06d1d9b56ef8132fbf85006885eb43d9510b8b02' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/300348e3ba1521b003d59825f97e24f9a6859688' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/44af98cc7d5ef8e730488d5df1eecd5deeaa5947' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/4649e6faeecdc2d44bfa6ccbe405eef27e55d816' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/a63d2dbaeb50a85d4c976b15a36e6b0c7113db5b' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/acbdc276091b308ca7794acb86e761f8203e2f59' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/b5ee5b266f833601ac4817f6df0bc496fc376a28' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/e7acfc990c29890c883d0d0ce3f737d003a43b44' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: >- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80714.json - url: 'https://access.redhat.com/security/cve/CVE-2026-80714' - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2525436' - url: 'https://www.cve.org/CVERecord?id=CVE-2026-80714' - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-80714' - url: >- https://lore.kernel.org/linux-cve-announce/2026082809-CVE-2026-80714-799a@gregkh/T - url: 'https://access.redhat.com/errata/RHSA-2026:71602' - url: 'https://access.redhat.com/errata/RHSA-2026:71700' - url: 'https://access.redhat.com/errata/RHSA-2026:71329' - url: 'https://access.redhat.com/errata/RHSA-2026:71330' tags: - nvd - csaf - vex - red-hat - cve.org - score-dispute epss: 0.00479 epssPercentile: 0.41148 ssvc: exploitation: none automatable: 'yes' technicalImpact: total timestamp: '2026-10-16T19:20:40.726937Z' scores: nvd: 9.8 vendor: 7.8 cna: 9.8 ingestedAt: '2026-10-16T19:46:24.305Z' --- ## Overview 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. ## Remediation Refer to the linked advisories for vendor-supplied fixes and affected version ranges. ## Vendor advisories - **RHSA-2026:71602** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux BaseOS (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10), Red Hat Enterprise Linux Real Time for NFV (v. 10), Red Hat Enterprise Linux Real Time (v. 10) · released 2026-09-24 · [advisory](https://access.redhat.com/errata/RHSA-2026:71602) - **RHSA-2026:71700** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux BaseOS (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9), Red Hat Enterprise Linux Real Time for NFV (v. 9), Red Hat Enterprise Linux Real Time (v. 9) · released 2026-09-25 · [advisory](https://access.redhat.com/errata/RHSA-2026:71700) - **RHSA-2026:71329** · Red Hat · fixed in: Red Hat Enterprise Linux BaseOS (v. 8), Red Hat Enterprise Linux CRB (v. 8) · released 2026-09-24 · [advisory](https://access.redhat.com/errata/RHSA-2026:71329) - **RHSA-2026:71330** · Red Hat · fixed in: Red Hat Enterprise Linux NFV (v. 8), Red Hat Enterprise Linux RT (v. 8) · released 2026-09-24 · [advisory](https://access.redhat.com/errata/RHSA-2026:71330) - **Red Hat VEX** · Important · affected: Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 9 · updated 2026-10-23 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80714.json)