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kernel: fix race condition between mmget_not_zero()/get_task_mm() and core dumping

🗓️ 21 Jan 2020 18:12:52Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 9 Views

There is a kernel race between core dumping and mmget_not_zero/get_task_mm that risks data exposure or DoS due to missing locking.

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Refs
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0day.today		Linux Missing Lockdown Exploit
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IBM Security Bulletins		Security Bulletin: IBM QRadar SIEM is vulnerable to multiple Kernel vulnerabilities
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IBM Security Bulletins		Security Bulletin: Vyatta 5600 vRouter Software Patches - Release 1801-za
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IBM Security Bulletins		Security Bulletin: WebSphere Cast Iron and App Connect Professional are affected by vulnerabilities in Pacemaker, ImageMagick, gd-libgd, libxslt, cURL libcurl , Ghostscript.
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IBM Security Bulletins		Security Bulletin: IBM Security Guardium is affected by a kernel vulnerability
7 Oct 202016:05
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Tenable Nessus		Amazon Linux 2 : kernel (ALAS-2019-1232)
24 Jul 201900:00
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Tenable Nessus		Amazon Linux AMI : kernel (ALAS-2019-1232)
26 Jul 201900:00
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Tenable Nessus		CentOS 8 : kernel (CESA-2019:3517)
29 Jan 202100:00
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Tenable Nessus		CentOS 8 : kernel (CESA-2020:0339)
1 Feb 202100:00
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Tenable Nessus		CentOS 7 : kernel (CESA-2019:2029)
11 Sep 201900:00
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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux7.6x86_64bpftool0:3.10.0-957.43.1.el7bpftool-0:3.10.0-957.43.1.el7.x86_64.rpm
Red Hat Enterprise Linux7.6ppc64kernel0:3.10.0-957.43.1.el7kernel-0:3.10.0-957.43.1.el7.ppc64.rpm
Red Hat Enterprise Linux7.6ppc64lekernel0:3.10.0-957.43.1.el7kernel-0:3.10.0-957.43.1.el7.ppc64le.rpm
Red Hat Enterprise Linux7.6s390xkernel0:3.10.0-957.43.1.el7kernel-0:3.10.0-957.43.1.el7.s390x.rpm
Red Hat Enterprise Linux7.6x86_64kernel0:3.10.0-957.43.1.el7kernel-0:3.10.0-957.43.1.el7.x86_64.rpm
Red Hat Enterprise Linux7.6anykernel-abi-whitelists0:3.10.0-957.43.1.el7.noarchkernel-abi-whitelists-0:3.10.0-957.43.1.el7.noarch.noarch.rpm
Red Hat Enterprise Linux7.6ppc64kernel-bootwrapper0:3.10.0-957.43.1.el7kernel-bootwrapper-0:3.10.0-957.43.1.el7.ppc64.rpm
Red Hat Enterprise Linux7.6ppc64lekernel-bootwrapper0:3.10.0-957.43.1.el7kernel-bootwrapper-0:3.10.0-957.43.1.el7.ppc64le.rpm
Red Hat Enterprise Linux7.6ppc64kernel-debug0:3.10.0-957.43.1.el7kernel-debug-0:3.10.0-957.43.1.el7.ppc64.rpm
Red Hat Enterprise Linux7.6ppc64lekernel-debug0:3.10.0-957.43.1.el7kernel-debug-0:3.10.0-957.43.1.el7.ppc64le.rpm
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30 Jun 2026 11:36Current
7.2High risk
Vulners AI Score7.2
CVSS 26.9
CVSS 3.17
EPSS0.00989
CWE-820
core dumpingrace conditionmemory managementdenial of servicemmget not zeroget task mm
9