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kernel: Missing namespace check in net/netlink/af_netlink.c allows for network monitors to observe systemwide activity

🗓️ 17 Apr 2018 15:29:43Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 17 Views

The kernel lacks a namespace check in af_netlink.c, enabling cross-namespace netlink monitoring when NLMON is enabled.

Related
Packages
Refs
ReporterTitlePublishedViews
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IBM Security Bulletins		Security Bulletin: IBM QRadar Network Security is affected by Linux kernel vulnerabilities
25 Jul 201814:35
–ibm
IBM Security Bulletins		Security Bulletin: Multiple vulnerabilities in the Linux kernel affect IBM SAN Volume Controller, IBM Storwize, IBM Spectrum Virtualize and IBM FlashSystem products
29 Mar 202301:48
–ibm
IBM Security Bulletins		Security Bulletin: Multiple Vulnerabilities in the Linux kernel affect the IBM FlashSystem models V840 and V9000
11 Nov 201915:20
–ibm
IBM Security Bulletins		Security Bulletin: Vulnerabilities in the Linux kernel affect PowerKVM
6 Jul 201823:49
–ibm
IBM Security Bulletins		Security Bulletin: Multiple Vulnerabilities in the Linux kernel affect the IBM FlashSystem 840 and 900
18 Feb 202301:45
–ibm
ATTACKERKB		CVE-2017-17449
7 Dec 201700:29
–attackerkb
Android Security Bulletins		Pixel / Nexus Security Bulletin—April 2018Stay organized with collectionsSave and categorize content based on your preferences.
2 Apr 201800:00
–androidsecurity
ArchLinux		[ASA-201801-1] linux: multiple issues
5 Jan 201800:00
–archlinux
ArchLinux		[ASA-201801-2] linux-lts: multiple issues
5 Jan 201800:00
–archlinux
ArchLinux		[ASA-201801-3] linux-zen: multiple issues
5 Jan 201800:00
–archlinux
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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux6x86_64kernel-rt1:3.10.0-693.25.2.rt56.612.el6rtkernel-rt-1:3.10.0-693.25.2.rt56.612.el6rt.x86_64.rpm
Red Hat Enterprise Linux6x86_64kernel-rt-debug1:3.10.0-693.25.2.rt56.612.el6rtkernel-rt-debug-1:3.10.0-693.25.2.rt56.612.el6rt.x86_64.rpm
Red Hat Enterprise Linux6x86_64kernel-rt-debug-debuginfo1:3.10.0-693.25.2.rt56.612.el6rtkernel-rt-debug-debuginfo-1:3.10.0-693.25.2.rt56.612.el6rt.x86_64.rpm
Red Hat Enterprise Linux6x86_64kernel-rt-debug-devel1:3.10.0-693.25.2.rt56.612.el6rtkernel-rt-debug-devel-1:3.10.0-693.25.2.rt56.612.el6rt.x86_64.rpm
Red Hat Enterprise Linux6x86_64kernel-rt-debuginfo1:3.10.0-693.25.2.rt56.612.el6rtkernel-rt-debuginfo-1:3.10.0-693.25.2.rt56.612.el6rt.x86_64.rpm
Red Hat Enterprise Linux6x86_64kernel-rt-debuginfo-common-x86_641:3.10.0-693.25.2.rt56.612.el6rtkernel-rt-debuginfo-common-x86_64-1:3.10.0-693.25.2.rt56.612.el6rt.x86_64.rpm
Red Hat Enterprise Linux6x86_64kernel-rt-devel1:3.10.0-693.25.2.rt56.612.el6rtkernel-rt-devel-1:3.10.0-693.25.2.rt56.612.el6rt.x86_64.rpm
Red Hat Enterprise Linux6anykernel-rt-doc1:3.10.0-693.25.2.rt56.612.el6rt.noarchkernel-rt-doc-1:3.10.0-693.25.2.rt56.612.el6rt.noarch.noarch.rpm
Red Hat Enterprise Linux6anykernel-rt-firmware1:3.10.0-693.25.2.rt56.612.el6rt.noarchkernel-rt-firmware-1:3.10.0-693.25.2.rt56.612.el6rt.noarch.noarch.rpm
Red Hat Enterprise Linux6x86_64kernel-rt-trace1:3.10.0-693.25.2.rt56.612.el6rtkernel-rt-trace-1:3.10.0-693.25.2.rt56.612.el6rt.x86_64.rpm
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28 Jun 2026 12:27Current
6.6Medium risk
Vulners AI Score6.6
CVSS 21.9
CVSS 34.7
EPSS0.00436
CWE-284
linux kernelnetlink monitoringnamespace isolationsecurity vulnerabilitynet administrator capabilitynlmon interfacesystem wide observation
17