Medium [CVE-2026-11850] integer underflow in berval2tl_data() leads to heap out-of-bounds read
This medium-severity Red Hat Linux advisory covers CVE-2026-11850 affecting Red Hat Hardened Images, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6.
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Summary
integer underflow in berval2tl_data() leads to heap out-of-bounds read. Red Hat rates this moderate (CVSS 5).
Weakness: CWE-191. Affected package(s): krb5-main.
Resolved in Red Hat advisory RHSA-2026:25520 — update the affected packages (`sudo dnf update`).
Affected products named by the advisory: Red Hat Hardened Images; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; and 3 more.
- krb5-main-1.22.2-8.hum1
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
- RHSA-2026:25520
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-2026:25520 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
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