> CVE-2026-43499

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PUBLISHED
2026-05-21 13:16
MODIFIED
2026-05-21 13:16
EPSS (Prob. Exploit)
0.79%
Top 44.2%
DATA SOURCES:
NVD 🔗 2026-05-21 RED HAT 🔗 2026-05-24 FIRST EPSS 🔗 2026-10-25 MSRC 🔗 2026-11-02

> DESCRIPTION

In the Linux kernel, the following vulnerability has been resolved: rtmutex: Use waiter::task instead of current in remove_waiter() remove_waiter() is used by the slowlock paths, but it is also used for proxy-lock rollback in rt_mutex_start_proxy_lock() when invoked from futex_requeue(). In the latter case waiter::task is not current, but remove_waiter() operates on current for the dequeue operation. That results in several problems: 1) the rbtree dequeue happens without waiter::task::pi_lock being held 2) the waiter task's pi_blocked_on state is not cleared, which leaves a dangling pointer primed for UAF around. 3) rt_mutex_adjust_prio_chain() operates on the wrong top priority waiter task Use waiter::task instead of current in all related operations in remove_waiter() to cure those problems. [ tglx: Fixup rt_mutex_adjust_prio_chain(), add a comment and amend the changelog ]

> AFFECTED_PRODUCTS

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

> RED HAT SECURITY ADVISORIES

Red Hat Security Advisory: kernel security, bug fix, and enhancement update
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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...
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 (...
Red Hat Security Advisory: kernel-rt update
Please update
Red Hat Security Advisory: kernel update
Please update
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...
Red Hat Security Advisory: kernel security update
An update for kernel is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On. Red Hat Prod...
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 Moderate. A...
Red Hat Security Advisory: kernel security update
An update for kernel is now available for Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On. Red Hat Prod...
Red Hat Security Advisory: kernel 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...
Red Hat Security Advisory: kernel security 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 Security Advisory: kernel security update
An update for kernel is now available for Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A Co...
Red Hat Security Advisory: kernel security update
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Red Hat Security Advisory: kernel security update
An update for kernel is now available for Red Hat Enterprise Linux 7 Extended Lifecycle Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vuln...
Red Hat Security Advisory: kernel-rt security update
An update for kernel-rt is now available for Red Hat Enterprise Linux 7 Extended Lifecycle Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common V...
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An update for kernel is now available for Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION. Red Hat Product Security has rated this update as having a security impact of Important....
Red Hat Security Advisory: kpatch-patch-5_14_0-284_117_1, kpatch-patch-5_14_0-284_134_1, kpatch-patch-5_14_0-284_148_1, kpatch-patch-5_14_0-284_158_1, and kpatch-patch-5_14_0-284_172_1 security update
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Red Hat Security Advisory: kpatch-patch-4_18_0-477_107_1, kpatch-patch-4_18_0-477_120_1, kpatch-patch-4_18_0-477_130_1, kpatch-patch-4_18_0-477_143_1, and kpatch-patch-4_18_0-477_97_1 security update
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An update for kpatch-patch-5_14_0-687_10_1 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 Vulnerabi...
Red Hat Security Advisory: kpatch-patch-5_14_0-570_116_1, kpatch-patch-5_14_0-570_17_1, kpatch-patch-5_14_0-570_39_1, kpatch-patch-5_14_0-570_66_1, and kpatch-patch-5_14_0-570_94_1 security update
An update for multiple packages 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 C...
Red Hat Security Advisory: kpatch-patch-5_14_0-427_100_1, kpatch-patch-5_14_0-427_113_1, kpatch-patch-5_14_0-427_126_1, kpatch-patch-5_14_0-427_68_2, and kpatch-patch-5_14_0-427_84_1 security update
An update for multiple packages is now available for Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Impo...
Red Hat Security Advisory: kernel security, bug fix, and enhancement update
An update for kernel is now available for Red Hat Enterprise Linux for NVIDIA. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring S...

> RED HAT SEVERITY ASSESSMENT

> HISTORIQUE DES MODIFICATIONS

Première apparition
21/05/2026 13:16
Source: NVD
📊 ENRICHISSEMENT 24/05/2026 05:01
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": null }
Nouvelle valeur:
{ "threat_severity": null, "severity_scale": null }
📊 ENRICHISSEMENT 22/05/2026 23:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": null }
Nouvelle valeur:
{ "threat_severity": null, "severity_scale": null }
📊 ENRICHISSEMENT 22/05/2026 22:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": null }
Nouvelle valeur:
{ "threat_severity": null, "severity_scale": null }
📊 ENRICHISSEMENT 22/05/2026 21:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": null }
Nouvelle valeur:
{ "threat_severity": null, "severity_scale": null }
📊 ENRICHISSEMENT 22/05/2026 20:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": null }
Nouvelle valeur:
{ "threat_severity": null, "severity_scale": null }
📊 ENRICHISSEMENT 22/05/2026 19:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": null }
Nouvelle valeur:
{ "threat_severity": null, "severity_scale": null }
📊 ENRICHISSEMENT 22/05/2026 18:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": null }
Nouvelle valeur:
{ "threat_severity": null, "severity_scale": null }
📊 ENRICHISSEMENT 22/05/2026 17:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": null }
Nouvelle valeur:
{ "threat_severity": null, "severity_scale": null }
📊 ENRICHISSEMENT 22/05/2026 16:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": null }
Nouvelle valeur:
{ "threat_severity": null, "severity_scale": null }
📊 ENRICHISSEMENT 22/05/2026 15:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": null }
Nouvelle valeur:
{ "threat_severity": null, "severity_scale": null }
📊 ENRICHISSEMENT 22/05/2026 14:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": null }
Nouvelle valeur:
{ "threat_severity": null, "severity_scale": null }
📊 ENRICHISSEMENT 22/05/2026 13:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": null }
Nouvelle valeur:
{ "threat_severity": null, "severity_scale": null }
📊 ENRICHISSEMENT 22/05/2026 12:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": null }
Nouvelle valeur:
{ "threat_severity": null, "severity_scale": null }
📊 ENRICHISSEMENT 22/05/2026 11:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": null }
Nouvelle valeur:
{ "threat_severity": null, "severity_scale": null }
📊 ENRICHISSEMENT 22/05/2026 10:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": null }
Nouvelle valeur:
{ "threat_severity": null, "severity_scale": null }
📊 ENRICHISSEMENT 22/05/2026 09:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": null }
Nouvelle valeur:
{ "threat_severity": null, "severity_scale": null }
📊 ENRICHISSEMENT 22/05/2026 08:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": null }
Nouvelle valeur:
{ "threat_severity": null, "severity_scale": null }
📊 ENRICHISSEMENT 22/05/2026 07:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": null }
Nouvelle valeur:
{ "threat_severity": null, "severity_scale": null }
📊 ENRICHISSEMENT 22/05/2026 06:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": null }
Nouvelle valeur:
{ "threat_severity": null, "severity_scale": null }
📊 ENRICHISSEMENT 22/05/2026 05:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": null }
Nouvelle valeur:
{ "threat_severity": null, "severity_scale": null }
📊 ENRICHISSEMENT 22/05/2026 04:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": null }
Nouvelle valeur:
{ "threat_severity": null, "severity_scale": null }
📊 ENRICHISSEMENT 22/05/2026 03:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": null }
Nouvelle valeur:
{ "threat_severity": null, "severity_scale": null }
📊 ENRICHISSEMENT 22/05/2026 02:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": null }
Nouvelle valeur:
{ "threat_severity": null, "severity_scale": null }
📊 ENRICHISSEMENT 22/05/2026 01:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": null }
Nouvelle valeur:
{ "threat_severity": null, "severity_scale": null }
📊 ENRICHISSEMENT 22/05/2026 00:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
N/A
Nouvelle valeur:
{ "threat_severity": null, "severity_scale": null }
📊 ENRICHISSEMENT 22/05/2026 00:30
REDHAT
Champ modifié: Red Hat
Ancienne valeur:
Non
Nouvelle valeur:
Oui
Total des modifications: 26 Dernière mise à jour: 5 months ago

> REFERENCES

https://git.kernel.org/stable/c/3bfdc63936dd4773109b7b8c280c0f3b5ae7d349
https://git.kernel.org/stable/c/3fb7394a837740770f0d6b4b30567e60786a63f2
https://git.kernel.org/stable/c/6d52dfcb2a5db86e346cf51f8fcf2071b8085166
https://git.kernel.org/stable/c/88614876370aac8ad1050ad785a4c095ba17ac11
https://git.kernel.org/stable/c/8a1fc8d698ac5e5916e3082a0f74450d71f9611f
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