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kernel: tcp: add sanity checks to rx zerocopy

🗓️ 13 Nov 2024 00:14:10Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 7 Views

Linux kernel tcp rx zerocopy has missing sanity checks, allowing page mapping and denial of service by a local attacker.

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Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9.2x86_64kernel-rt5.14.0-284.92.1.rt14.377.el9_2kernel-rt-5.14.0-284.92.1.rt14.377.el9_2.x86_64.rpm
Red Hat Enterprise Linux9.2x86_64kernel-rt-core5.14.0-284.92.1.rt14.377.el9_2kernel-rt-core-5.14.0-284.92.1.rt14.377.el9_2.x86_64.rpm
Red Hat Enterprise Linux9.2x86_64kernel-rt-debug5.14.0-284.92.1.rt14.377.el9_2kernel-rt-debug-5.14.0-284.92.1.rt14.377.el9_2.x86_64.rpm
Red Hat Enterprise Linux9.2x86_64kernel-rt-debug-core5.14.0-284.92.1.rt14.377.el9_2kernel-rt-debug-core-5.14.0-284.92.1.rt14.377.el9_2.x86_64.rpm
Red Hat Enterprise Linux9.2x86_64kernel-rt-debug-debuginfo5.14.0-284.92.1.rt14.377.el9_2kernel-rt-debug-debuginfo-5.14.0-284.92.1.rt14.377.el9_2.x86_64.rpm
Red Hat Enterprise Linux9.2x86_64kernel-rt-debug-devel5.14.0-284.92.1.rt14.377.el9_2kernel-rt-debug-devel-5.14.0-284.92.1.rt14.377.el9_2.x86_64.rpm
Red Hat Enterprise Linux9.2x86_64kernel-rt-debug-kvm5.14.0-284.92.1.rt14.377.el9_2kernel-rt-debug-kvm-5.14.0-284.92.1.rt14.377.el9_2.x86_64.rpm
Red Hat Enterprise Linux9.2x86_64kernel-rt-debug-modules5.14.0-284.92.1.rt14.377.el9_2kernel-rt-debug-modules-5.14.0-284.92.1.rt14.377.el9_2.x86_64.rpm
Red Hat Enterprise Linux9.2x86_64kernel-rt-debug-modules-core5.14.0-284.92.1.rt14.377.el9_2kernel-rt-debug-modules-core-5.14.0-284.92.1.rt14.377.el9_2.x86_64.rpm
Red Hat Enterprise Linux9.2x86_64kernel-rt-debug-modules-extra5.14.0-284.92.1.rt14.377.el9_2kernel-rt-debug-modules-extra-5.14.0-284.92.1.rt14.377.el9_2.x86_64.rpm
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28 Jun 2026 12:46Current
7.3High risk
Vulners AI Score7.3
CVSS 3.15.5
EPSS0.0023
SSVC
7