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5.5

Yasm versions before 1.3.0-15 can cause crashes

published 4 years ago
Summary

The Yasm assembler (versions older than 1.3.0-15) has a coding error that may cause it to try to use a missing piece of data, leading to a crash. This can interrupt build processes or other automated tasks that rely on Yasm. Update Yasm to version 1.3.0-15 or later to prevent the problem.

What to do
  • Update azure yasm to version 1.3.0-15.
Affected software
Ecosystem VendorProductAffected versions
Azure Linux:3 azure yasm < 1.3.0-15
Fix: upgrade to 1.3.0-15
Original advisory text
CVE-2021-33454 affecting package yasm for versions less than 1.3.0-15
An issue was discovered in yasm version 1.3.0. There is a NULL pointer dereference in yasm_expr_get_intnum() in libyasm/expr.c.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker partial control (estimated)
Severity
5.5 Medium
Timeline
Published26 Jul 2022
Updated23 Sep 2026
First seen23 Sep 2026
Sources
AZL-35364 · OSV
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