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kernel: posix-cpu-timers: fix race between handle_posix_cpu_timers() and posix_cpu_timer_del()

🗓️ 11 Sep 2025 03:48:34Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 9 Views

Fixes race between handle_posix_cpu_timers and posix_cpu_timer_del to prevent use-after-free and privilege escalation.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
githubexploit
GithubExploit		Exploit for Time-of-check Time-of-use (TOCTOU) Race Condition in Linux Linux_Kernel
19 Jan 202601:22
–githubexploit
githubexploit
GithubExploit		Exploit for Time-of-check Time-of-use (TOCTOU) Race Condition in Linux Linux_Kernel
3 Jan 202616:52
–githubexploit
githubexploit
GithubExploit		lpe-toolkit
21 May 202619:33
–githubexploit
githubexploit
GithubExploit		Exploit for Time-of-check Time-of-use (TOCTOU) Race Condition in Linux Linux_Kernel
2 Jun 202615:13
–githubexploit
githubexploit
GithubExploit		Exploit for Time-of-check Time-of-use (TOCTOU) Race Condition in Linux Linux_Kernel
24 Feb 202605:25
–githubexploit
githubexploit
GithubExploit		Exploit for Time-of-check Time-of-use (TOCTOU) Race Condition in Linux Linux_Kernel
13 Sep 202610:12
–githubexploit
githubexploit
GithubExploit		Exploit for Time-of-check Time-of-use (TOCTOU) Race Condition in Linux Linux_Kernel
30 May 202602:37
–githubexploit
githubexploit
GithubExploit		Exploit for Time-of-check Time-of-use (TOCTOU) Race Condition in Linux Linux_Kernel
8 Jan 202614:14
–githubexploit
ibm
IBM Security Bulletins		Security Bulletin: IBM TXSeries for Multiplatforms is affected by a Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability & a use-after-free (UAF) vulnerability found in Linux kernel packages.
9 Oct 202511:38
–ibm
ibm
IBM Security Bulletins		Security Bulletin: IBM CICS TX Standard is affected by a Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability & a use-after-free (UAF) vulnerability found in Linux kernel packages.
14 Oct 202509:15
–ibm
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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux10.0aarch64kernel6.12.0-55.32.1.el10_0kernel-6.12.0-55.32.1.el10_0.aarch64.rpm
Red Hat Enterprise Linux10.0ppc64lekernel6.12.0-55.32.1.el10_0kernel-6.12.0-55.32.1.el10_0.ppc64le.rpm
Red Hat Enterprise Linux10.0s390xkernel6.12.0-55.32.1.el10_0kernel-6.12.0-55.32.1.el10_0.s390x.rpm
Red Hat Enterprise Linux10.0x86_64kernel6.12.0-55.32.1.el10_0kernel-6.12.0-55.32.1.el10_0.x86_64.rpm
Red Hat Enterprise Linux10.0aarch64kernel-64k6.12.0-55.32.1.el10_0kernel-64k-6.12.0-55.32.1.el10_0.aarch64.rpm
Red Hat Enterprise Linux10.0aarch64kernel-64k-core6.12.0-55.32.1.el10_0kernel-64k-core-6.12.0-55.32.1.el10_0.aarch64.rpm
Red Hat Enterprise Linux10.0aarch64kernel-64k-debug6.12.0-55.32.1.el10_0kernel-64k-debug-6.12.0-55.32.1.el10_0.aarch64.rpm
Red Hat Enterprise Linux10.0aarch64kernel-64k-debug-core6.12.0-55.32.1.el10_0kernel-64k-debug-core-6.12.0-55.32.1.el10_0.aarch64.rpm
Red Hat Enterprise Linux10.0aarch64kernel-64k-debug-debuginfo6.12.0-55.32.1.el10_0kernel-64k-debug-debuginfo-6.12.0-55.32.1.el10_0.aarch64.rpm
Red Hat Enterprise Linux10.0aarch64kernel-64k-debug-devel6.12.0-55.32.1.el10_0kernel-64k-debug-devel-6.12.0-55.32.1.el10_0.aarch64.rpm
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30 Jul 2026 09:17Current
7.2High risk
Vulners AI Score7.2
CVSS 3.17.8
EPSS0.01254
SSVC
CWE-362
linux kernelposix cpu timersrace conditionuse after freeprivilege escalationlocal user access
9