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kernel: information leak in the IPv4 implementation

🗓️ 10 May 2022 13:43:14Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 12 Views

Information leak in the kernel IPv4 route code due to a small IP ID hash table in ip_rt_init.

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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8x86_64kernel-rt4.18.0-372.9.1.rt7.166.el8kernel-rt-4.18.0-372.9.1.rt7.166.el8.x86_64.rpm
Red Hat Enterprise Linux8x86_64kernel-rt-core4.18.0-372.9.1.rt7.166.el8kernel-rt-core-4.18.0-372.9.1.rt7.166.el8.x86_64.rpm
Red Hat Enterprise Linux8x86_64kernel-rt-debug4.18.0-372.9.1.rt7.166.el8kernel-rt-debug-4.18.0-372.9.1.rt7.166.el8.x86_64.rpm
Red Hat Enterprise Linux8x86_64kernel-rt-debug-core4.18.0-372.9.1.rt7.166.el8kernel-rt-debug-core-4.18.0-372.9.1.rt7.166.el8.x86_64.rpm
Red Hat Enterprise Linux8x86_64kernel-rt-debug-debuginfo4.18.0-372.9.1.rt7.166.el8kernel-rt-debug-debuginfo-4.18.0-372.9.1.rt7.166.el8.x86_64.rpm
Red Hat Enterprise Linux8x86_64kernel-rt-debug-devel4.18.0-372.9.1.rt7.166.el8kernel-rt-debug-devel-4.18.0-372.9.1.rt7.166.el8.x86_64.rpm
Red Hat Enterprise Linux8x86_64kernel-rt-debug-kvm4.18.0-372.9.1.rt7.166.el8kernel-rt-debug-kvm-4.18.0-372.9.1.rt7.166.el8.x86_64.rpm
Red Hat Enterprise Linux8x86_64kernel-rt-debug-modules4.18.0-372.9.1.rt7.166.el8kernel-rt-debug-modules-4.18.0-372.9.1.rt7.166.el8.x86_64.rpm
Red Hat Enterprise Linux8x86_64kernel-rt-debug-modules-extra4.18.0-372.9.1.rt7.166.el8kernel-rt-debug-modules-extra-4.18.0-372.9.1.rt7.166.el8.x86_64.rpm
Red Hat Enterprise Linux8x86_64kernel-rt-debuginfo4.18.0-372.9.1.rt7.166.el8kernel-rt-debuginfo-4.18.0-372.9.1.rt7.166.el8.x86_64.rpm
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05 Oct 2026 16:49Current
6.7Medium risk
Vulners AI Score6.7
CVSS 22.7
CVSS 3.13.5
EPSS0.00368
CWE-497
information leakkernel routeidentifier hashing
12