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kernel: out-of-bounds write in xt_compat_target_from_user() in net/netfilter/x_tables.c

🗓️ 12 Oct 2021 15:19:06Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 14 Views

Kernel out-of-bounds write in compatibility path during setsockopt replace for 32-bit on 64-bit, enabling privilege escalation or DoS via user namespaces.

Related
Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux7x86_64bpftool3.10.0-957.84.1.el7bpftool-3.10.0-957.84.1.el7.x86_64.rpm
Red Hat Enterprise Linux7ppc64lekernel3.10.0-957.84.1.el7kernel-3.10.0-957.84.1.el7.ppc64le.rpm
Red Hat Enterprise Linux7x86_64kernel3.10.0-957.84.1.el7kernel-3.10.0-957.84.1.el7.x86_64.rpm
Red Hat Enterprise Linux7noarchkernel-abi-whitelists3.10.0-957.84.1.el7kernel-abi-whitelists-3.10.0-957.84.1.el7.noarch.rpm
Red Hat Enterprise Linux7ppc64lekernel-bootwrapper3.10.0-957.84.1.el7kernel-bootwrapper-3.10.0-957.84.1.el7.ppc64le.rpm
Red Hat Enterprise Linux7ppc64lekernel-debug3.10.0-957.84.1.el7kernel-debug-3.10.0-957.84.1.el7.ppc64le.rpm
Red Hat Enterprise Linux7x86_64kernel-debug3.10.0-957.84.1.el7kernel-debug-3.10.0-957.84.1.el7.x86_64.rpm
Red Hat Enterprise Linux7ppc64lekernel-debug-debuginfo3.10.0-957.84.1.el7kernel-debug-debuginfo-3.10.0-957.84.1.el7.ppc64le.rpm
Red Hat Enterprise Linux7x86_64kernel-debug-debuginfo3.10.0-957.84.1.el7kernel-debug-debuginfo-3.10.0-957.84.1.el7.x86_64.rpm
Red Hat Enterprise Linux7ppc64lekernel-debug-devel3.10.0-957.84.1.el7kernel-debug-devel-3.10.0-957.84.1.el7.ppc64le.rpm
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07 Aug 2026 02:37Current
6.7Medium risk
Vulners AI Score6.7
CVSS 24.6
CVSS 3.17.8 - 8.3
EPSS0.78684
SSVC
14