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kernel: Linux kernel: Denial of service and memory corruption in RDMA umad

🗓️ 17 Jun 2026 09:22:48Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 19 Views

Local user can trigger integer underflow in Linux kernel RDMA umad causing memory corruption and DoS

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Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8.4x86_64bpftool4.18.0-305.194.1.el8_4bpftool-4.18.0-305.194.1.el8_4.x86_64.rpm
Red Hat Enterprise Linux8.4x86_64bpftool-debuginfo4.18.0-305.194.1.el8_4bpftool-debuginfo-4.18.0-305.194.1.el8_4.x86_64.rpm
Red Hat Enterprise Linux8.4x86_64kernel4.18.0-305.194.1.el8_4kernel-4.18.0-305.194.1.el8_4.x86_64.rpm
Red Hat Enterprise Linux8.4noarchkernel-abi-stablelists4.18.0-305.194.1.el8_4kernel-abi-stablelists-4.18.0-305.194.1.el8_4.noarch.rpm
Red Hat Enterprise Linux8.4x86_64kernel-core4.18.0-305.194.1.el8_4kernel-core-4.18.0-305.194.1.el8_4.x86_64.rpm
Red Hat Enterprise Linux8.4x86_64kernel-debug4.18.0-305.194.1.el8_4kernel-debug-4.18.0-305.194.1.el8_4.x86_64.rpm
Red Hat Enterprise Linux8.4x86_64kernel-debug-core4.18.0-305.194.1.el8_4kernel-debug-core-4.18.0-305.194.1.el8_4.x86_64.rpm
Red Hat Enterprise Linux8.4x86_64kernel-debug-debuginfo4.18.0-305.194.1.el8_4kernel-debug-debuginfo-4.18.0-305.194.1.el8_4.x86_64.rpm
Red Hat Enterprise Linux8.4x86_64kernel-debug-devel4.18.0-305.194.1.el8_4kernel-debug-devel-4.18.0-305.194.1.el8_4.x86_64.rpm
Red Hat Enterprise Linux8.4x86_64kernel-debug-modules4.18.0-305.194.1.el8_4kernel-debug-modules-4.18.0-305.194.1.el8_4.x86_64.rpm
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15 Jul 2026 18:16Current
5.5Medium risk
Vulners AI Score5.5
CVSS 3.17.8
EPSS0.00125
SSVC
19