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kernel: XFS data corruption using reflink

🗓️ 15 Jul 2026 13:47:23Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 5 Views

A flaw in the extents file system copy-on-write reflink bypasses copy-on-write, enabling local data corruption and possible privilege escalation.

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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8.4x86_64bpftool4.18.0-305.198.1.el8_4bpftool-4.18.0-305.198.1.el8_4.x86_64.rpm
Red Hat Enterprise Linux8.4x86_64bpftool-debuginfo4.18.0-305.198.1.el8_4bpftool-debuginfo-4.18.0-305.198.1.el8_4.x86_64.rpm
Red Hat Enterprise Linux8.4x86_64kernel4.18.0-305.198.1.el8_4kernel-4.18.0-305.198.1.el8_4.x86_64.rpm
Red Hat Enterprise Linux8.4noarchkernel-abi-stablelists4.18.0-305.198.1.el8_4kernel-abi-stablelists-4.18.0-305.198.1.el8_4.noarch.rpm
Red Hat Enterprise Linux8.4x86_64kernel-core4.18.0-305.198.1.el8_4kernel-core-4.18.0-305.198.1.el8_4.x86_64.rpm
Red Hat Enterprise Linux8.4x86_64kernel-debug4.18.0-305.198.1.el8_4kernel-debug-4.18.0-305.198.1.el8_4.x86_64.rpm
Red Hat Enterprise Linux8.4x86_64kernel-debug-core4.18.0-305.198.1.el8_4kernel-debug-core-4.18.0-305.198.1.el8_4.x86_64.rpm
Red Hat Enterprise Linux8.4x86_64kernel-debug-debuginfo4.18.0-305.198.1.el8_4kernel-debug-debuginfo-4.18.0-305.198.1.el8_4.x86_64.rpm
Red Hat Enterprise Linux8.4x86_64kernel-debug-devel4.18.0-305.198.1.el8_4kernel-debug-devel-4.18.0-305.198.1.el8_4.x86_64.rpm
Red Hat Enterprise Linux8.4x86_64kernel-debug-modules4.18.0-305.198.1.el8_4kernel-debug-modules-4.18.0-305.198.1.el8_4.x86_64.rpm
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