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Ubuntu 24.04 LTS NASM Critical Heap Overflow Denial of Service USN-8248-1

ubuntu
Calendar Grey May 7, 2026
Dist Ubuntu Esm H88
Multiple critical NASM issues fixed in Ubuntu. Ensure your systems are updated for complete protection.
Several security issues were fixed in NASM.

Summary

Several security issues were fixed in NASM.

Software Description:

- nasm: Netwide Assembler

Details:

Daisy Chen discovered that NASM was vulnerable to a heap buffer overflow

when handling certain input. An attacker could possibly use this issue

to cause NASM to crash, resulting in a denial of service, or

possibly execute arbitrary code. (CVE-2023-31722)

It was discovered that NASM incorrectly handled memory allocation.

An attacker could possibly use this issue to cause NASM to use

excessive resources, leading to a denial of service. This issue

only affected Ubuntu 24.04 LTS. (CVE-2021-33452, CVE-2021-33450)

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu heap overflow nasm

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 24.04 LTS
  nasm                            2.16.01-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro

Ubuntu 22.04 LTS
  nasm                            2.15.05-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro

In general, a standard system update will make all the necessary
changes.

References

https://ubuntu.com/security/notices/USN-8248-1

CVE-2021-33450, CVE-2021-33452, CVE-2023-31722

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-8248-1

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu heap overflow nasm

Package Information

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