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PUBLISHED

2026-03-18 18:16

MODIFIED

2026-03-18 18:16

EPSS (Prob. Exploit)

0.13%

Top 97.4%

DATA SOURCES:

NVD 🔗 2026-03-18 RED HAT 🔗 2026-03-22 FIRST EPSS 🔗 2026-10-25

> DESCRIPTION

In the Linux kernel, the following vulnerability has been resolved: net/sched: Only allow act_ct to bind to clsact/ingress qdiscs and shared blocks As Paolo said earlier [1]: "Since the blamed commit below, classify can return TC_ACT_CONSUMED while the current skb being held by the defragmentation engine. As reported by GangMin Kim, if such packet is that may cause a UaF when the defrag engine later on tries to tuch again such packet." act_ct was never meant to be used in the egress path, however some users are attaching it to egress today [2]. Attempting to reach a middle ground, we noticed that, while most qdiscs are not handling TC_ACT_CONSUMED, clsact/ingress qdiscs are. With that in mind, we address the issue by only allowing act_ct to bind to clsact/ingress qdiscs and shared blocks. That way it's still possible to attach act_ct to egress (albeit only with clsact). [1] https://lore.kernel.org/netdev/674b8cbfc385c6f37fb29a1de08d8fe5c2b0fbee.1771321118.git.pabeni@redhat.com/ [2] https://lore.kernel.org/netdev/[email protected]/

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> RED HAT SECURITY ADVISORIES

RHSA-2026:13566 IMPORTANT

Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (...

RHSA-2026:13565 IMPORTANT

Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (C...

RHSA-2026:19569 IMPORTANT

Red Hat Security Advisory: kernel security update

RHSA-2026:19568 IMPORTANT

Red Hat Security Advisory: kernel security update

RHSA-2026:21209 IMPORTANT

Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 9.4 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulne...

RHSA-2026:21745 IMPORTANT

Red Hat Security Advisory: kernel-rt security update

An update for kernel-rt is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System...

RHSA-2026:21706 IMPORTANT

Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (C...

RHSA-2026:22900 IMPORTANT

Red Hat Security Advisory: kernel-rt security update

An update for kernel-rt is now available for Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A...

RHSA-2026:22940 IMPORTANT

Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A Co...

RHSA-2026:23224 IMPORTANT

Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 9.6 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulne...

RHSA-2026:24343 IMPORTANT

Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 10.0 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vuln...

RHSA-2026:35863 IMPORTANT

Red Hat Security Advisory: kernel security, bug fix, and enhancement update

An update for kernel is now available for Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Service. Red Hat Product Security h...

> RED HAT SEVERITY ASSESSMENT

THREAT SEVERITY

Moderate

> HISTORIQUE DES MODIFICATIONS

Première apparition

18/03/2026 18:16

Source: NVD

📊 ENRICHISSEMENT 22/03/2026 05:01

REDHAT

Champ modifié: Sévérité Red Hat

Ancienne valeur:

{ "severity_scale": null, "threat_severity": "Moderate" }

Nouvelle valeur:

{ "threat_severity": "Moderate", "severity_scale": null }

📊 ENRICHISSEMENT 19/03/2026 23:30

REDHAT

Champ modifié: Sévérité Red Hat

Ancienne valeur:

{ "severity_scale": null, "threat_severity": "Moderate" }

Nouvelle valeur:

{ "threat_severity": "Moderate", "severity_scale": null }

📊 ENRICHISSEMENT 19/03/2026 22:30

REDHAT

Champ modifié: Sévérité Red Hat

Ancienne valeur:

{ "severity_scale": null, "threat_severity": "Moderate" }

Nouvelle valeur:

{ "threat_severity": "Moderate", "severity_scale": null }

📊 ENRICHISSEMENT 19/03/2026 21:30

REDHAT

Champ modifié: Sévérité Red Hat

Ancienne valeur:

{ "severity_scale": null, "threat_severity": "Moderate" }

Nouvelle valeur:

{ "threat_severity": "Moderate", "severity_scale": null }

📊 ENRICHISSEMENT 19/03/2026 20:30

REDHAT

Champ modifié: Sévérité Red Hat

Ancienne valeur:

{ "severity_scale": null, "threat_severity": "Moderate" }

Nouvelle valeur:

{ "threat_severity": "Moderate", "severity_scale": null }

📊 ENRICHISSEMENT 19/03/2026 19:30

REDHAT

Champ modifié: Sévérité Red Hat

Ancienne valeur:

{ "severity_scale": null, "threat_severity": "Moderate" }

Nouvelle valeur:

{ "threat_severity": "Moderate", "severity_scale": null }

📊 ENRICHISSEMENT 19/03/2026 18:30

REDHAT

Champ modifié: Sévérité Red Hat

Ancienne valeur:

{ "severity_scale": null, "threat_severity": "Moderate" }

Nouvelle valeur:

{ "threat_severity": "Moderate", "severity_scale": null }

📊 ENRICHISSEMENT 19/03/2026 17:30

REDHAT

Champ modifié: Sévérité Red Hat

Ancienne valeur:

{ "severity_scale": null, "threat_severity": "Moderate" }

Nouvelle valeur:

{ "threat_severity": "Moderate", "severity_scale": null }

📊 ENRICHISSEMENT 19/03/2026 16:30

REDHAT

Champ modifié: Sévérité Red Hat

Ancienne valeur:

{ "severity_scale": null, "threat_severity": "Moderate" }

Nouvelle valeur:

{ "threat_severity": "Moderate", "severity_scale": null }

📊 ENRICHISSEMENT 19/03/2026 15:30

REDHAT

Champ modifié: Sévérité Red Hat

Ancienne valeur:

{ "severity_scale": null, "threat_severity": "Moderate" }

Nouvelle valeur:

{ "threat_severity": "Moderate", "severity_scale": null }

📊 ENRICHISSEMENT 19/03/2026 14:30

REDHAT

Champ modifié: Sévérité Red Hat

Ancienne valeur:

{ "severity_scale": null, "threat_severity": "Moderate" }

Nouvelle valeur:

{ "threat_severity": "Moderate", "severity_scale": null }

📊 ENRICHISSEMENT 19/03/2026 13:30

REDHAT

Champ modifié: Sévérité Red Hat

Ancienne valeur:

{ "severity_scale": null, "threat_severity": "Moderate" }

Nouvelle valeur:

{ "threat_severity": "Moderate", "severity_scale": null }

📊 ENRICHISSEMENT 19/03/2026 12:30

REDHAT

Champ modifié: Sévérité Red Hat

Ancienne valeur:

{ "severity_scale": null, "threat_severity": "Moderate" }

Nouvelle valeur:

{ "threat_severity": "Moderate", "severity_scale": null }

📊 ENRICHISSEMENT 19/03/2026 11:30

REDHAT

Champ modifié: Sévérité Red Hat

Ancienne valeur:

{ "severity_scale": null, "threat_severity": "Moderate" }

Nouvelle valeur:

{ "threat_severity": "Moderate", "severity_scale": null }

📊 ENRICHISSEMENT 19/03/2026 10:30

REDHAT

Champ modifié: Sévérité Red Hat

Ancienne valeur:

{ "severity_scale": null, "threat_severity": "Moderate" }

Nouvelle valeur:

{ "threat_severity": "Moderate", "severity_scale": null }

📊 ENRICHISSEMENT 19/03/2026 09:30

REDHAT

Champ modifié: Sévérité Red Hat

Ancienne valeur:

{ "severity_scale": null, "threat_severity": "Moderate" }

Nouvelle valeur:

{ "threat_severity": "Moderate", "severity_scale": null }

📊 ENRICHISSEMENT 19/03/2026 08:30

REDHAT

Champ modifié: Sévérité Red Hat

Ancienne valeur:

{ "severity_scale": null, "threat_severity": "Moderate" }

Nouvelle valeur:

{ "threat_severity": "Moderate", "severity_scale": null }

📊 ENRICHISSEMENT 19/03/2026 07:30

REDHAT

Champ modifié: Sévérité Red Hat

Ancienne valeur:

{ "severity_scale": null, "threat_severity": "Moderate" }

Nouvelle valeur:

{ "threat_severity": "Moderate", "severity_scale": null }

📊 ENRICHISSEMENT 19/03/2026 06:30

REDHAT

Champ modifié: Sévérité Red Hat

Ancienne valeur:

{ "severity_scale": null, "threat_severity": "Moderate" }

Nouvelle valeur:

{ "threat_severity": "Moderate", "severity_scale": null }

📊 ENRICHISSEMENT 19/03/2026 05:30

REDHAT

Champ modifié: Sévérité Red Hat

Ancienne valeur:

{ "severity_scale": null, "threat_severity": "Moderate" }

Nouvelle valeur:

{ "threat_severity": "Moderate", "severity_scale": null }

📊 ENRICHISSEMENT 19/03/2026 04:30

REDHAT

Champ modifié: Sévérité Red Hat

Ancienne valeur:

{ "severity_scale": null, "threat_severity": "Moderate" }

Nouvelle valeur:

{ "threat_severity": "Moderate", "severity_scale": null }

📊 ENRICHISSEMENT 19/03/2026 03:30

REDHAT

Champ modifié: Sévérité Red Hat

Ancienne valeur:

{ "severity_scale": null, "threat_severity": "Moderate" }

Nouvelle valeur:

{ "threat_severity": "Moderate", "severity_scale": null }

📊 ENRICHISSEMENT 19/03/2026 02:30

REDHAT

Champ modifié: Sévérité Red Hat

Ancienne valeur:

{ "severity_scale": null, "threat_severity": "Moderate" }

Nouvelle valeur:

{ "threat_severity": "Moderate", "severity_scale": null }

📊 ENRICHISSEMENT 19/03/2026 01:30

REDHAT

Champ modifié: Sévérité Red Hat

Ancienne valeur:

{ "severity_scale": null, "threat_severity": "Moderate" }

Nouvelle valeur:

{ "threat_severity": "Moderate", "severity_scale": null }

📊 ENRICHISSEMENT 19/03/2026 00:30

REDHAT

Champ modifié: Sévérité Red Hat

Ancienne valeur:

N/A

Nouvelle valeur:

{ "threat_severity": "Moderate", "severity_scale": null }

📊 ENRICHISSEMENT 19/03/2026 00:30

REDHAT

Champ modifié: Red Hat

Ancienne valeur:

Non

Nouvelle valeur:

Oui

Total des modifications: 26 Dernière mise à jour: 7 months ago

> REFERENCES

https://git.kernel.org/stable/c/11cb63b0d1a0685e0831ae3c77223e002ef18189

https://git.kernel.org/stable/c/380ad8b7c65ea7aa10ef2258297079ed5ac1f5b6

https://git.kernel.org/stable/c/524ce8b4ea8f64900b6c52b6a28df74f6bc0801e

https://git.kernel.org/stable/c/9deda0fcda5c1f388c5e279541850b71a2ccfcf4

« BACK_TO_HOME

> CVE-2026-23270

> DESCRIPTION

> AFFECTED_PRODUCTS

> RED HAT SECURITY ADVISORIES

> RED HAT SEVERITY ASSESSMENT

> HISTORIQUE DES MODIFICATIONS

> REFERENCES