CVE catalog

CVE-2018-20535

nasm: CVE-2018-20535

[CVE catalog]

Severity
Low
Published
Source
[NVD] · [CVE record]
EPSS
0.80% · Oct 25, 2026

There is a use-after-free at asm/preproc.c (function pp_getline) in Netwide Assembler (NASM) 2.14rc16 that will cause a denial of service during a line-number increment attempt.

Vulnerable and fixed packages

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

DistributionPackageReleaseVersionStatus
Debiannasmsid3.01-1fixed
Debiannasmforky3.01-1fixed
Debiannasmtrixie2.16.03-1fixed
Debiannasmbookworm2.16.01-1fixed
Ubuntunasm16.042.11.06-1really2.11.05-1vulnerable
Ubuntunasm16.042.11.08-1vulnerable
Ubuntunasm16.042.11.08-1ubuntu0.1vulnerable
Ubuntunasm18.042.13.01-2vulnerable
Ubuntunasm18.042.13.02-0.1vulnerable
Ubuntunasm20.042.14.02-1vulnerable

Fixed-version evidence

DistributionPackageTypeReleaseFixed versionUrgencyOriginBugs
Debiannasmsourcesid2.15.04-1unimportantNot reported[918270]
Debiannasmsourceforky2.15.04-1unimportantNot reported[918270]
Debiannasmsourcetrixie2.15.04-1unimportantNot reported[918270]
Debiannasmsourcebookworm2.15.04-1unimportantNot reported[918270]

[Debian bug #918270]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

  • [nasm]Fixed
    Details (2)

    • 2.16.01-1 · amd64 · bookworm

      Fixed · Fixed: 2.15.04-1

      dsa · nasm · debian · bookworm; dsa · nasm · debian · 12

    • 2.16.01-1 · arm64 · bookworm

      Fixed · Fixed: 2.15.04-1

      dsa · nasm · debian · bookworm; dsa · nasm · debian · 12

[Debian 13 (Trixie)]

  • [nasm]Fixed
    Details (2)

    • 2.16.03-1 · amd64 · trixie

      Fixed · Fixed: 2.15.04-1

      dsa · nasm · debian · 13

    • 2.16.03-1 · arm64 · trixie

      Fixed · Fixed: 2.15.04-1

      dsa · nasm · debian · 13

Observed:

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database]