CVE catalog

CVE-2021-39535

libxsmm: CVE-2021-39535

Severity: High · CVSS 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: Jan 1, 2021, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.86% · Oct 27, 2026

An issue was discovered in libxsmm through v1.16.1-93. A NULL pointer dereference exists in JIT code. It allows an attacker to cause Denial of Service.

Vulnerable and fixed packages

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

Distribution	Package	Release	Version	Status
Debian	libxsmm	sid	`1.17-4`	fixed
Debian	libxsmm	trixie	`1.17-4`	fixed
Debian	libxsmm	bookworm	`1.17-2`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	libxsmm	source	sid	`1.17-1`	not yet assigned	Not reported	[996098]
Debian	libxsmm	source	trixie	`1.17-1`	not yet assigned	Not reported	[996098]
Debian	libxsmm	source	bookworm	`1.17-1`	not yet assigned	Not reported	[996098]

[Debian bug #996098]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libxsmm-dev]Fixed
Source package: [libxsmm]
Details (1)
- 1.17-2 · amd64 · bookworm
  Fixed · Fixed: 1.17-1
  dsa · libxsmm · debian · bookworm; dsa · libxsmm · debian · 12

[Debian 13 (Trixie)]

[libxsmm-dev]Fixed
Source package: [libxsmm]
Details (1)
- 1.17-4 · amd64 · trixie
  Fixed · Fixed: 1.17-1
  dsa · libxsmm · debian · 13

Observed: Oct 23, 2026, 6:01:59 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]