CVE-2021-33463: Tortall Yasm

Medium severity, CVSS 5.5. EPSS: 0.3% chance of exploitation in the next 30 days.

An issue was discovered in yasm version 1.3.0. There is a NULL pointer dereference in yasm_expr__copy_except() in libyasm/expr.c.

Affected products

• Tortall Yasm: version 1.3.0 only

Published 2022-07-26. Last modified 2026-06-17.