Critical9.6Vendor: HighRed Hat & Ubuntu Linux
Heap buffer overflow in CSS
CVE-2026-4442 Published Mar 18, 2026
CVE-2026-4442
Affected products & platforms
Red Hat & Ubuntu LinuxUnclassified
Summary
Heap buffer overflow in CSS. Red Hat rates this important (CVSS 9.6). Weakness: CWE-131. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released.
Mitigation checklist
Recommended fix / mitigation
- Red Hat rates this important; a fix erratum may not be out yet — apply the RHSA as soon as it publishes.
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
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