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kernel: sched/membarrier: reduce the ability to hammer on sys_membarrier

🗓️ 23 Apr 2024 16:31:49Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 3 Views

A flaw in sys_membarrier in Linux kernel lets a local user saturate the machine by frequent calls.

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Refs
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ibm		Security Bulletin: Vulnerabilities in Linux Kernel, MongoDB, Python, Samba, OpenSSL and cURL libcurl affect IBM Spectrum Protect Plus
10 Apr 202507:49
–ibm
ibm		Security Bulletin: Vulnerability in linux (Kernel) affects IBM Integrated Analytics System.
2 Jul 202512:19
–ibm
ibm		Security Bulletin: IBM Security Guardium is affected by a Kernel vulnerability (CVE-2024-1086, CVE-2024-26602)
29 Jul 202414:28
–ibm
nessus		Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2024-549)
6 Mar 202400:00
–nessus
nessus		Amazon Linux 2 : kernel (ALAS-2024-2525)
30 Apr 202400:00
–nessus
nessus		Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.10-2024-053 (ALASKERNEL-5.10-2024-053)
1 Apr 202400:00
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nessus		Amazon Linux 2 : kernel (ALASKERNEL-5.15-2024-039)
6 Mar 202400:00
–nessus
nessus		Amazon Linux 2 : kernel (ALASKERNEL-5.4-2024-062)
1 Apr 202400:00
–nessus
nessus		Azure Linux 3.0 Security Update: hyperv-daemons (CVE-2024-26602)
22 Jan 202600:00
–nessus
nessus		CentOS 9 : kernel-5.14.0-432.el9
26 Apr 202400:00
–nessus
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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8.2x86_64kernel-rt4.18.0-193.133.1.rt13.184.el8_2kernel-rt-4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
Red Hat Enterprise Linux8.2x86_64kernel-rt-core4.18.0-193.133.1.rt13.184.el8_2kernel-rt-core-4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
Red Hat Enterprise Linux8.2x86_64kernel-rt-debug4.18.0-193.133.1.rt13.184.el8_2kernel-rt-debug-4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
Red Hat Enterprise Linux8.2x86_64kernel-rt-debug-core4.18.0-193.133.1.rt13.184.el8_2kernel-rt-debug-core-4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
Red Hat Enterprise Linux8.2x86_64kernel-rt-debug-debuginfo4.18.0-193.133.1.rt13.184.el8_2kernel-rt-debug-debuginfo-4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
Red Hat Enterprise Linux8.2x86_64kernel-rt-debug-devel4.18.0-193.133.1.rt13.184.el8_2kernel-rt-debug-devel-4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
Red Hat Enterprise Linux8.2x86_64kernel-rt-debug-kvm4.18.0-193.133.1.rt13.184.el8_2kernel-rt-debug-kvm-4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
Red Hat Enterprise Linux8.2x86_64kernel-rt-debug-modules4.18.0-193.133.1.rt13.184.el8_2kernel-rt-debug-modules-4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
Red Hat Enterprise Linux8.2x86_64kernel-rt-debug-modules-extra4.18.0-193.133.1.rt13.184.el8_2kernel-rt-debug-modules-extra-4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
Red Hat Enterprise Linux8.2x86_64kernel-rt-debuginfo4.18.0-193.133.1.rt13.184.el8_2kernel-rt-debuginfo-4.18.0-193.133.1.rt13.184.el8_2.x86_64.rpm
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28 Jun 2026 12:43Current
6.6Medium risk
Vulners AI Score6.6
CVSS 3.15.5
EPSS0.00316
SSVC
linux kernelmembarrier flawlocal user risksys membarrierexcessive calls
3