Vulnerability · Published Dec 22, 2021 · Assigned by mitre
CVE-2021-45256
Medium 5.5
In plain English
A medium-severity security flaw in the nasm package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 53% of all known vulnerabilities).
Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.7%top 47.0% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
A Null Pointer Dereference vulnerability existfs in nasm 2.16rc0 via asm/preproc.c.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | nasm | no fix listed | DEBIAN-CVE-2021-45256 |
| Debian:13 | nasm | no fix listed | DEBIAN-CVE-2021-45256 |
| Debian:14 | nasm | no fix listed | DEBIAN-CVE-2021-45256 |
| Ubuntu:25.10 | nasm | no fix listed | UBUNTU-CVE-2021-45256 |
| Ubuntu:26.04:LTS | nasm | no fix listed | UBUNTU-CVE-2021-45256 |
| Ubuntu:26.10 | nasm | no fix listed | UBUNTU-CVE-2021-45256 |
Affected products (as reported)
References
- https://bugzilla.nasm.us/show_bug.cgi?id=3392789 x_refsource_MISC