CVE-2026-62431

The logic to handle periodic Viridian STIMERs performs a division with an unchecked user-controlled divisor value, that can be set to zero to cause a DE fault...

CVE-2026-62431

CVE-2026-62431 concerns the Viridian STIMER logic, where a division by an unchecked, user-controlled divisor (which can be zero) leads to a #DE fault. Connected sources corroborate the issue across multiple feeds, with descriptions repeatedly stating a division-by-zero in periodic Viridian STIMER...

Viridian STIMER division by zero

ISSUE DESCRIPTION The logic to handle periodic Viridian STIMERs performs a division with an unchecked user-controlled divisor value, that can be set to zero to cause a DE fault. IMPACT Enabling Viridian STIMERs to unprivileged HVM guests can result in a Denial of Service DoS affecting the entire...