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kernel: net/sched: act_api: use RCU with deferred freeing for action lifecycle

🗓️ 17 Aug 2026 05:05:35Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 3 Views

Race condition in Linux kernel net/sched act_api causes use-after-free during concurrent filter operations.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
githubexploit
GithubExploit		Exploit for Use After Free in Linux Linux_Kernel
28 Jul 202609:15
–githubexploit
attackerkb
ATTACKERKB		CVE-2026-53264
25 Jun 202608:39
–attackerkb
nessus
Tenable Nessus		Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2026-1924)
16 Jul 202600:00
–nessus
nessus
Tenable Nessus		Amazon Linux 2023 : bpftool6.18, kernel6.18, kernel6.18-devel (ALAS2023-2026-1925)
16 Jul 202600:00
–nessus
nessus
Tenable Nessus		Amazon Linux 2023 : bpftool6.12, kernel6.12, kernel6.12-devel (ALAS2023-2026-1968)
20 Jul 202600:00
–nessus
nessus
Tenable Nessus		Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.10-2026-124 (ALASKERNEL-5.10-2026-124)
8 Jul 202600:00
–nessus
nessus
Tenable Nessus		Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.15-2026-110 (ALASKERNEL-5.15-2026-110)
20 Jul 202600:00
–nessus
nessus
Tenable Nessus		AlmaLinux 10 : kernel (ALSA-2026:54343)
14 Aug 202600:00
–nessus
nessus
Tenable Nessus		Debian dla-4664 : ata-modules-5.10.0-43-armmp-di - security update
3 Jul 202600:00
–nessus
nessus
Tenable Nessus		Debian dla-4665 : affs-modules-6.1.0-48-4kc-malta-di - security update
3 Jul 202600:00
–nessus
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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux10.0aarch64kernel6.12.0-55.98.1.el10_0kernel-6.12.0-55.98.1.el10_0.aarch64.rpm
Red Hat Enterprise Linux10.0ppc64lekernel6.12.0-55.98.1.el10_0kernel-6.12.0-55.98.1.el10_0.ppc64le.rpm
Red Hat Enterprise Linux10.0s390xkernel6.12.0-55.98.1.el10_0kernel-6.12.0-55.98.1.el10_0.s390x.rpm
Red Hat Enterprise Linux10.0x86_64kernel6.12.0-55.98.1.el10_0kernel-6.12.0-55.98.1.el10_0.x86_64.rpm
Red Hat Enterprise Linux10.0aarch64kernel-64k6.12.0-55.98.1.el10_0kernel-64k-6.12.0-55.98.1.el10_0.aarch64.rpm
Red Hat Enterprise Linux10.0aarch64kernel-64k-core6.12.0-55.98.1.el10_0kernel-64k-core-6.12.0-55.98.1.el10_0.aarch64.rpm
Red Hat Enterprise Linux10.0aarch64kernel-64k-debug6.12.0-55.98.1.el10_0kernel-64k-debug-6.12.0-55.98.1.el10_0.aarch64.rpm
Red Hat Enterprise Linux10.0aarch64kernel-64k-debug-core6.12.0-55.98.1.el10_0kernel-64k-debug-core-6.12.0-55.98.1.el10_0.aarch64.rpm
Red Hat Enterprise Linux10.0aarch64kernel-64k-debug-debuginfo6.12.0-55.98.1.el10_0kernel-64k-debug-debuginfo-6.12.0-55.98.1.el10_0.aarch64.rpm
Red Hat Enterprise Linux10.0aarch64kernel-64k-debug-devel6.12.0-55.98.1.el10_0kernel-64k-debug-devel-6.12.0-55.98.1.el10_0.aarch64.rpm
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17 Aug 2026 14:58Current
6.4Medium risk
Vulners AI Score6.4
CVSS 3.17.8
EPSS0.00205
SSVC
CWE-364
Linux kernelnet/schedact_apirace conditionuse-after-freenetworking scheduler
3