High [CVE-2026-5732] Incorrect boundary conditions, integer overflow in the Graphics: Text component
This high-severity Red Hat Linux advisory covers CVE-2026-5732 affecting Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7.
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Summary
Incorrect boundary conditions, integer overflow in the Graphics: Text component. Red Hat rates this important (CVSS 8.8).
Weakness: CWE-190. Affected package(s): thunderbird, firefox.
Resolved in Red Hat advisory RHSA-2026:11805 — update the affected packages (`sudo dnf update`).
Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7.
- thunderbird-0:140.9.1-1.el8_6
- thunderbird-0:140.9.1-1.el10_0
- thunderbird-0:140.9.1-1.el9_6
- thunderbird-0:140.9.1-1.el8_4
- thunderbird-0:140.9.1-1.el9_4
- thunderbird-0:140.9.1-1.el9_2
- thunderbird-0:140.9.1-1.el9_0
- firefox-0:140.9.1-1.el8_4
- firefox-0:140.9.1-1.el9_4
- firefox-0:140.9.1-1.el8_6
- firefox-0:140.9.1-2.el7_9
- firefox-0:140.9.1-1.el9_6
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
- RHSA-2026:11805
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
Mitigation checklist
- Update the affected package(s) to the fixed version shipped in RHSA-2026:11805 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
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