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kernel: futex/requeue: Prevent NULL pointer dereference in remove_waiter() on self-deadlock

🗓️ 14 Jul 2026 05:39:50Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 4 Views

Kernel futex requeue fix prevents NULL pointer dereference in remove_waiter during self-deadlock, avoiding DoS.

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Refs
ReporterTitlePublishedViews
Family
ATTACKERKB		CVE-2026-53166
25 Jun 202608:38
–attackerkb
AlmaLinux		Important: kernel security, bug fix, and enhancement update
13 Jul 202600:00
–almalinux
Chainguard		CVE-2026-53166 vulnerabilities
9 Jul 202602:25
–cgr
Circl		CVE-2026-53166
8 Jul 202619:53
–circl
CVE		CVE-2026-53166
25 Jun 202608:38
–cve
Cvelist		CVE-2026-53166
25 Jun 202608:38
–cvelist
Debian CVE		CVE-2026-53166
25 Jun 202608:38
–debiancve
EUVD		EUVD-2026-39257
25 Jun 202608:38
–euvd
NVD		CVE-2026-53166
25 Jun 202609:16
–nvd
OSV		ALSA-2026:38491 Important: kernel security, bug fix, and enhancement update
13 Jul 202600:00
–osv
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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8.10x86_64kernel-rt0:4.18.0-553.143.1.rt7.484.el8_10kernel-rt-0:4.18.0-553.143.1.rt7.484.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10x86_64kernel-rt-core0:4.18.0-553.143.1.rt7.484.el8_10kernel-rt-core-0:4.18.0-553.143.1.rt7.484.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10x86_64kernel-rt-debug0:4.18.0-553.143.1.rt7.484.el8_10kernel-rt-debug-0:4.18.0-553.143.1.rt7.484.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10x86_64kernel-rt-debug-core0:4.18.0-553.143.1.rt7.484.el8_10kernel-rt-debug-core-0:4.18.0-553.143.1.rt7.484.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10x86_64kernel-rt-debug-debuginfo0:4.18.0-553.143.1.rt7.484.el8_10kernel-rt-debug-debuginfo-0:4.18.0-553.143.1.rt7.484.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10x86_64kernel-rt-debug-devel0:4.18.0-553.143.1.rt7.484.el8_10kernel-rt-debug-devel-0:4.18.0-553.143.1.rt7.484.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10x86_64kernel-rt-debug-kvm0:4.18.0-553.143.1.rt7.484.el8_10kernel-rt-debug-kvm-0:4.18.0-553.143.1.rt7.484.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10x86_64kernel-rt-debug-modules0:4.18.0-553.143.1.rt7.484.el8_10kernel-rt-debug-modules-0:4.18.0-553.143.1.rt7.484.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10x86_64kernel-rt-debug-modules-extra0:4.18.0-553.143.1.rt7.484.el8_10kernel-rt-debug-modules-extra-0:4.18.0-553.143.1.rt7.484.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10x86_64kernel-rt-debuginfo0:4.18.0-553.143.1.rt7.484.el8_10kernel-rt-debuginfo-0:4.18.0-553.143.1.rt7.484.el8_10.x86_64.rpm
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14 Jul 2026 11:07Current
6Medium risk
Vulners AI Score6
EPSS0.00126
CWE-476
futex requeueremove waiternull pointerself deadlockpriority inheritancedenial of service
4