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kernel: uninitialized registers on stack in nft_do_chain can cause kernel pointer leakage to UM

🗓️ 08 Nov 2022 09:25:15Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 5 Views

Linux kernel flaw in nf_tables_core.c nft_do_chain causes use-after-free and pointer leakage to user memory.

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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8x86_64kernel-rt0:4.18.0-425.3.1.rt7.213.el8kernel-rt-0:4.18.0-425.3.1.rt7.213.el8.x86_64.rpm
Red Hat Enterprise Linux8x86_64kernel-rt-core0:4.18.0-425.3.1.rt7.213.el8kernel-rt-core-0:4.18.0-425.3.1.rt7.213.el8.x86_64.rpm
Red Hat Enterprise Linux8x86_64kernel-rt-debug0:4.18.0-425.3.1.rt7.213.el8kernel-rt-debug-0:4.18.0-425.3.1.rt7.213.el8.x86_64.rpm
Red Hat Enterprise Linux8x86_64kernel-rt-debug-core0:4.18.0-425.3.1.rt7.213.el8kernel-rt-debug-core-0:4.18.0-425.3.1.rt7.213.el8.x86_64.rpm
Red Hat Enterprise Linux8x86_64kernel-rt-debug-debuginfo0:4.18.0-425.3.1.rt7.213.el8kernel-rt-debug-debuginfo-0:4.18.0-425.3.1.rt7.213.el8.x86_64.rpm
Red Hat Enterprise Linux8x86_64kernel-rt-debug-devel0:4.18.0-425.3.1.rt7.213.el8kernel-rt-debug-devel-0:4.18.0-425.3.1.rt7.213.el8.x86_64.rpm
Red Hat Enterprise Linux8x86_64kernel-rt-debug-kvm0:4.18.0-425.3.1.rt7.213.el8kernel-rt-debug-kvm-0:4.18.0-425.3.1.rt7.213.el8.x86_64.rpm
Red Hat Enterprise Linux8x86_64kernel-rt-debug-modules0:4.18.0-425.3.1.rt7.213.el8kernel-rt-debug-modules-0:4.18.0-425.3.1.rt7.213.el8.x86_64.rpm
Red Hat Enterprise Linux8x86_64kernel-rt-debug-modules-extra0:4.18.0-425.3.1.rt7.213.el8kernel-rt-debug-modules-extra-0:4.18.0-425.3.1.rt7.213.el8.x86_64.rpm
Red Hat Enterprise Linux8x86_64kernel-rt-debuginfo0:4.18.0-425.3.1.rt7.213.el8kernel-rt-debuginfo-0:4.18.0-425.3.1.rt7.213.el8.x86_64.rpm
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03 Jul 2026 02:27Current
6.6Medium risk
Vulners AI Score6.6
CVSS 3.15.5
EPSS0.00416
CWE-909
linux kernel flawnf tables corenft do chainuse after freepointer leakagekernel information leaklocal attackeruninitialized registers
5