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kernel: TLB flush happens too late on mremap

🗓️ 14 Jan 2020 08:06:10Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 4 Views

TLB flushes occur too late during mremap since Linux 3.2, risking stale entries after locks drop.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
IBM Security Bulletins		Security Bulletin: IBM QRadar SIEM is vulnerable to multiple Kernel vulnerabilities
6 Nov 201919:05
–ibm
Android Security Bulletins		Android Security Bulletin—January 2019Stay organized with collectionsSave and categorize content based on your preferences.
7 Jan 201900:00
–androidsecurity
BDU FSTEC		A vulnerability exists in the implementation of the mremap() system call in the Linux operating system, which allows an attacker to gain access to the physical page.
6 Aug 201900:00
–bdu_fstec
Tenable Nessus		CentOS 7 : kernel (CESA-2019:2029)
11 Sep 201900:00
–nessus
Tenable Nessus		Debian DLA-1715-1 : linux-4.9 security update (Spectre)
18 Mar 201900:00
–nessus
Tenable Nessus		Debian DLA-1731-2 : linux regression update (Spectre)
28 Mar 201900:00
–nessus
Tenable Nessus		EulerOS 2.0 SP5 : kernel (EulerOS-SA-2019-1076)
8 Mar 201900:00
–nessus
Tenable Nessus		EulerOS 2.0 SP3 : kernel (EulerOS-SA-2019-1108)
26 Mar 201900:00
–nessus
Tenable Nessus		EulerOS 2.0 SP2 : kernel (EulerOS-SA-2019-1131)
2 Apr 201900:00
–nessus
Tenable Nessus		EulerOS Virtualization 2.5.3 : kernel (EulerOS-SA-2019-1244)
4 Apr 201900:00
–nessus
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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux6x86_64kernel-rt1:3.10.0-693.62.1.rt56.659.el6rtkernel-rt-1:3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm
Red Hat Enterprise Linux6x86_64kernel-rt-debug1:3.10.0-693.62.1.rt56.659.el6rtkernel-rt-debug-1:3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm
Red Hat Enterprise Linux6x86_64kernel-rt-debug-debuginfo1:3.10.0-693.62.1.rt56.659.el6rtkernel-rt-debug-debuginfo-1:3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm
Red Hat Enterprise Linux6x86_64kernel-rt-debug-devel1:3.10.0-693.62.1.rt56.659.el6rtkernel-rt-debug-devel-1:3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm
Red Hat Enterprise Linux6x86_64kernel-rt-debuginfo1:3.10.0-693.62.1.rt56.659.el6rtkernel-rt-debuginfo-1:3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm
Red Hat Enterprise Linux6x86_64kernel-rt-debuginfo-common-x86_641:3.10.0-693.62.1.rt56.659.el6rtkernel-rt-debuginfo-common-x86_64-1:3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm
Red Hat Enterprise Linux6x86_64kernel-rt-devel1:3.10.0-693.62.1.rt56.659.el6rtkernel-rt-devel-1:3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm
Red Hat Enterprise Linux6anykernel-rt-doc1:3.10.0-693.62.1.rt56.659.el6rt.noarchkernel-rt-doc-1:3.10.0-693.62.1.rt56.659.el6rt.noarch.noarch.rpm
Red Hat Enterprise Linux6anykernel-rt-firmware1:3.10.0-693.62.1.rt56.659.el6rt.noarchkernel-rt-firmware-1:3.10.0-693.62.1.rt56.659.el6rt.noarch.noarch.rpm
Red Hat Enterprise Linux6x86_64kernel-rt-trace1:3.10.0-693.62.1.rt56.659.el6rtkernel-rt-trace-1:3.10.0-693.62.1.rt56.659.el6rt.x86_64.rpm
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28 Jun 2026 08:45Current
7High risk
Vulners AI Score7
CVSS 24.6
CVSS 37.8
EPSS0.01061
CWE-672
translation lookaside buffermremap syscallpagetable locksstale entriespage allocator
4