High7.3Vendor: MediumRed Hat & Ubuntu Linux
Linux kernel: Denial of service and memory corruption in RDMA umad
CVE-2026-23243 Published Mar 18, 2026
CVE-2026-23243
Affected products & platforms
Red Hat & Ubuntu LinuxUnclassified
Summary
Linux kernel: Denial of service and memory corruption in RDMA umad. Red Hat rates this moderate (CVSS 7.3). Weakness: CWE-131. Affected package(s): kernel, kernel-rt. Resolved in Red Hat advisory RHSA-2026:13936 — update the affected packages (`sudo dnf update`).
Affected versions
- kernel-0:4.18.0-305.194.1.el8_4
- kernel-0:5.14.0-284.172.1.el9_2
- kernel-0:4.18.0-553.126.1.el8_10
- kernel-0:5.14.0-427.127.1.el9_4
- kernel-0:6.12.0-55.72.1.el10_0
- kernel-rt-0:5.14.0-70.178.1.rt21.250.el9_0
- kernel-0:6.12.0-211.7.1.el10_2
- kernel-0:4.18.0-372.196.1.el8_6
- kernel-0:5.14.0-687.5.1.el9_8
- kernel-0:5.14.0-70.178.1.el9_0
- kernel-0:3.10.0-1160.153.1.el7
- kernel-rt-0:5.14.0-284.172.1.rt14.457.el9_2
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
Fixed versions
- RHSA-2026:13936
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
Mitigation checklist
Recommended fix / mitigation
- Update the affected package(s) to the fixed version shipped in RHSA-2026:13936 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
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