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kernel: lack a full memory barrier upon the assignment of a new table value in net/netfilter/x_tables.c and include/linux/netfilter/x_tables.h may lead to DoS

🗓️ 31 Aug 2021 09:18:32Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 4 Views

A denial of service vulnerability in Linux kernel caused by a missing barrier in xt_replace_table.

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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux7x86_64kernel-rt3.10.0-1160.41.1.rt56.1181.el7kernel-rt-3.10.0-1160.41.1.rt56.1181.el7.x86_64.rpm
Red Hat Enterprise Linux7x86_64kernel-rt-debug3.10.0-1160.41.1.rt56.1181.el7kernel-rt-debug-3.10.0-1160.41.1.rt56.1181.el7.x86_64.rpm
Red Hat Enterprise Linux7x86_64kernel-rt-debug-debuginfo3.10.0-1160.41.1.rt56.1181.el7kernel-rt-debug-debuginfo-3.10.0-1160.41.1.rt56.1181.el7.x86_64.rpm
Red Hat Enterprise Linux7x86_64kernel-rt-debug-devel3.10.0-1160.41.1.rt56.1181.el7kernel-rt-debug-devel-3.10.0-1160.41.1.rt56.1181.el7.x86_64.rpm
Red Hat Enterprise Linux7x86_64kernel-rt-debug-kvm3.10.0-1160.41.1.rt56.1181.el7kernel-rt-debug-kvm-3.10.0-1160.41.1.rt56.1181.el7.x86_64.rpm
Red Hat Enterprise Linux7x86_64kernel-rt-debug-kvm-debuginfo3.10.0-1160.41.1.rt56.1181.el7kernel-rt-debug-kvm-debuginfo-3.10.0-1160.41.1.rt56.1181.el7.x86_64.rpm
Red Hat Enterprise Linux7x86_64kernel-rt-debuginfo3.10.0-1160.41.1.rt56.1181.el7kernel-rt-debuginfo-3.10.0-1160.41.1.rt56.1181.el7.x86_64.rpm
Red Hat Enterprise Linux7x86_64kernel-rt-debuginfo-common-x86_643.10.0-1160.41.1.rt56.1181.el7kernel-rt-debuginfo-common-x86_64-3.10.0-1160.41.1.rt56.1181.el7.x86_64.rpm
Red Hat Enterprise Linux7x86_64kernel-rt-devel3.10.0-1160.41.1.rt56.1181.el7kernel-rt-devel-3.10.0-1160.41.1.rt56.1181.el7.x86_64.rpm
Red Hat Enterprise Linux7noarchkernel-rt-doc3.10.0-1160.41.1.rt56.1181.el7kernel-rt-doc-3.10.0-1160.41.1.rt56.1181.el7.noarch.rpm
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11 Jul 2026 17:41Current
6.7Medium risk
Vulners AI Score6.7
CVSS 24.9
CVSS 3.15.5
EPSS0.00413
CWE-366
linux kernelmissing memory barrierxt replace tabledenial of servicenetfilter
4