Medium5.9Vendor: LowRed Hat & Ubuntu Linux
Denial of Service due to NULL pointer dereference in delta CRL processing
CVE-2026-28388 Published Apr 7, 2026
CVE-2026-28388
Affected products & platforms
Red Hat & Ubuntu LinuxUnclassified
Summary
Denial of Service due to NULL pointer dereference in delta CRL processing. Red Hat rates this low (CVSS 5.9). Weakness: CWE-476. Affected package(s): openssl-main. Resolved in Red Hat advisory RHSA-2026:7261 — update the affected packages (`sudo dnf update`).
Affected versions
- openssl-main-3.5.6-0.1.hum1
Official advisory · high-confidence parse· fetched 6 hours ago·verify at source
Fixed versions
- RHSA-2026:7261
Official advisory · high-confidence parse· fetched 6 hours ago·verify at source
Mitigation checklist
Recommended fix / mitigation
- Update the affected package(s) to the fixed version shipped in RHSA-2026:7261 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 6 hours ago·verify at source
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