CVE catalog

CVE-2026-6069

NASM’s disasm() function contains a stack based buffer overflow when formatting disassembly output, allowing an attacker triggered out-of-bounds write when `slen` exceeds the buffer capacity.

[CVE catalog]

Severity
High · CVSS 7.5
Published
Source
[NVD] · [CVE record]
EPSS
0.44% · Oct 25, 2026

NASM’s disasm() function contains a stack based buffer overflow when formatting disassembly output, allowing an attacker triggered out-of-bounds write when `slen` exceeds the buffer capacity.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

DistributionPackageReleaseVersionStatus
Debiannasmsid3.01-1vulnerable
Debiannasmforky3.01-1vulnerable
Debiannasmtrixie2.16.03-1vulnerable
Debiannasmbookworm2.16.01-1vulnerable
CpenasmNot reportedNot reportedvulnerable
Cpenetwide_assemblerNot reportedNot reportedunknown

Fixed-version evidence

DistributionPackageTypeReleaseFixed versionUrgencyOriginBugs
Debiannasmsourcesid(unfixed)not yet assignedNot reported[1133377]
Debiannasmsourceforky(unfixed)not yet assignedNot reported[1133377]
Debiannasmsourcetrixie(unfixed)not yet assignedNot reported[1133377]
Debiannasmsourcebookworm(unfixed)not yet assignedNot reported[1133377]

[Debian bug #1133377]

Notes

[trixie] nasm: Minor issue, revisit when fixed upstream [bookworm] nasm: Minor issue, revisit when fixed upstream

OpenFactory catalog packages

[Debian 12 (Bookworm)]

  • [nasm]Affected
    Details (2)

    • 2.16.01-1 · amd64 · bookworm

      Affected

      nvd · nasm · debian · bookworm; nvd · nasm · debian · 12

    • 2.16.01-1 · arm64 · bookworm

      Affected

      nvd · nasm · debian · bookworm; nvd · nasm · debian · 12

[Debian 13 (Trixie)]

  • [nasm]Affected
    Details (2)

    • 2.16.03-1 · amd64 · trixie

      Affected

      nvd · nasm · debian · 13

    • 2.16.03-1 · arm64 · trixie

      Affected

      nvd · nasm · debian · 13

Observed:

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database]