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

🗓️ 06 May 2026 13:41:11Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 8 Views

Local user can trigger integer underflow in remote direct memory access user mode component causing out-of-bounds write and DoS.

Related
Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9.0x86_64kernel-rt5.14.0-70.178.1.rt21.250.el9_0kernel-rt-5.14.0-70.178.1.rt21.250.el9_0.x86_64.rpm
Red Hat Enterprise Linux9.0x86_64kernel-rt-core5.14.0-70.178.1.rt21.250.el9_0kernel-rt-core-5.14.0-70.178.1.rt21.250.el9_0.x86_64.rpm
Red Hat Enterprise Linux9.0x86_64kernel-rt-debug5.14.0-70.178.1.rt21.250.el9_0kernel-rt-debug-5.14.0-70.178.1.rt21.250.el9_0.x86_64.rpm
Red Hat Enterprise Linux9.0x86_64kernel-rt-debug-core5.14.0-70.178.1.rt21.250.el9_0kernel-rt-debug-core-5.14.0-70.178.1.rt21.250.el9_0.x86_64.rpm
Red Hat Enterprise Linux9.0x86_64kernel-rt-debug-debuginfo5.14.0-70.178.1.rt21.250.el9_0kernel-rt-debug-debuginfo-5.14.0-70.178.1.rt21.250.el9_0.x86_64.rpm
Red Hat Enterprise Linux9.0x86_64kernel-rt-debug-devel5.14.0-70.178.1.rt21.250.el9_0kernel-rt-debug-devel-5.14.0-70.178.1.rt21.250.el9_0.x86_64.rpm
Red Hat Enterprise Linux9.0x86_64kernel-rt-debug-kvm5.14.0-70.178.1.rt21.250.el9_0kernel-rt-debug-kvm-5.14.0-70.178.1.rt21.250.el9_0.x86_64.rpm
Red Hat Enterprise Linux9.0x86_64kernel-rt-debug-modules5.14.0-70.178.1.rt21.250.el9_0kernel-rt-debug-modules-5.14.0-70.178.1.rt21.250.el9_0.x86_64.rpm
Red Hat Enterprise Linux9.0x86_64kernel-rt-debug-modules-extra5.14.0-70.178.1.rt21.250.el9_0kernel-rt-debug-modules-extra-5.14.0-70.178.1.rt21.250.el9_0.x86_64.rpm
Red Hat Enterprise Linux9.0x86_64kernel-rt-debuginfo5.14.0-70.178.1.rt21.250.el9_0kernel-rt-debuginfo-5.14.0-70.178.1.rt21.250.el9_0.x86_64.rpm
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17 Jul 2026 16:41Current
5.7Medium risk
Vulners AI Score5.7
CVSS 3.17.8
EPSS0.00131
SSVC
8