CVE catalog

CVE-2021-4048

openblas: CVE-2021-4048

Severity: Medium · CVSS 5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: Sep 30, 2021, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 2.76% · Oct 25, 2026

An out-of-bounds read flaw was found in the CLARRV, DLARRV, SLARRV, and ZLARRV functions in lapack through version 3.10.0, as also used in OpenBLAS before version 0.3.18. Specially crafted inputs passed to these functions could cause an application using lapack to crash or possibly disclose portions of its memory.

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	lapack	sid	`3.12.1-8`	fixed
Debian	lapack	forky	`3.12.1-8`	fixed
Debian	lapack	trixie	`3.12.1-6`	fixed
Debian	lapack	bookworm	`3.11.0-2`	fixed
Debian	openblas	sid	`0.3.34+ds-2`	fixed
Debian	openblas	forky	`0.3.34+ds-2`	fixed
Debian	openblas	trixie	`0.3.29+ds-3`	fixed
Debian	openblas	bookworm	`0.3.21+ds-4`	fixed
Ubuntu	openblas	14.04	`0.2.8-2`	vulnerable
Ubuntu	openblas	14.04	`0.2.8-3`	vulnerable
Ubuntu	openblas	14.04	`0.2.8-4`	vulnerable
Ubuntu	openblas	14.04	`0.2.8-6`	vulnerable
Ubuntu	openblas	14.04	`0.2.8-6ubuntu1`	vulnerable
Ubuntu	openblas	16.04	`0.2.14-1ubuntu1`	vulnerable
Ubuntu	openblas	16.04	`0.2.15-1`	vulnerable
Ubuntu	openblas	16.04	`0.2.15-1build1`	vulnerable
Ubuntu	openblas	16.04	`0.2.18-1ubuntu1`	vulnerable
Ubuntu	lapack	18.04	`3.7.1-3ubuntu2`	vulnerable
Ubuntu	lapack	18.04	`3.7.1-4ubuntu1`	vulnerable
Ubuntu	openblas	18.04	`0.2.20+ds-4`	vulnerable
Ubuntu	lapack	20.04	`3.8.0-2`	vulnerable
Ubuntu	lapack	20.04	`3.8.0-8ubuntu1`	vulnerable
Ubuntu	lapack	20.04	`3.9.0-1`	vulnerable
Ubuntu	lapack	20.04	`3.9.0-1build1`	vulnerable
Ubuntu	openblas	20.04	`0.3.7+ds-1`	vulnerable
Ubuntu	openblas	20.04	`0.3.7+ds-7`	vulnerable
Ubuntu	openblas	20.04	`0.3.8+ds-1`	vulnerable
Ubuntu	openblas	20.04	`0.3.8+ds-1ubuntu0.20.04.1`	vulnerable
Suse	lapack	linux enterprise module for basesystem 15 sp3	`3.5.0-4.6.1`	fixed
Suse	lapack	linux enterprise module for development tools 15 sp3	`3.5.0-4.6.1`	fixed
Suse	lapack	linux enterprise real time 15 sp2	`3.5.0-4.6.1`	fixed
Opensuse	lapack	leap 15.3	`3.5.0-4.6.1`	fixed
Opensuse	lapack-man	leap 15.3	`3.5.0-4.6.1`	fixed
Suse	lapack	linux enterprise software development kit 12 sp5	`3.5.0-3.9.1`	fixed
Suse	lapack	linux enterprise server 12 sp5	`3.5.0-3.9.1`	fixed
Suse	lapack	linux enterprise server for sap applications 12 sp5	`3.5.0-3.9.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	lapack	source	sid	`3.10.0-2`	not yet assigned	Not reported	[1001902]
Debian	lapack	source	forky	`3.10.0-2`	not yet assigned	Not reported	[1001902]
Debian	lapack	source	trixie	`3.10.0-2`	not yet assigned	Not reported	[1001902]
Debian	lapack	source	bookworm	`3.10.0-2`	not yet assigned	Not reported	[1001902]
Debian	openblas	source	sid	`0.3.18+ds-1`	not yet assigned	Not reported	Not reported
Debian	openblas	source	forky	`0.3.18+ds-1`	not yet assigned	Not reported	Not reported
Debian	openblas	source	trixie	`0.3.18+ds-1`	not yet assigned	Not reported	Not reported
Debian	openblas	source	bookworm	`0.3.18+ds-1`	not yet assigned	Not reported	Not reported
Suse	lapack	rpm	linux enterprise module for basesystem 15 sp3	`3.5.0-4.6.1`	Not reported	SUSE-SU-2022:0915-1	Not reported
Suse	lapack	rpm	linux enterprise module for development tools 15 sp3	`3.5.0-4.6.1`	Not reported	SUSE-SU-2022:0915-1	Not reported
Suse	lapack	rpm	linux enterprise real time 15 sp2	`3.5.0-4.6.1`	Not reported	SUSE-SU-2022:0915-1	Not reported
Opensuse	lapack	rpm	leap 15.3	`3.5.0-4.6.1`	Not reported	OPENSUSE-SU-2022:0915-1	Not reported
Opensuse	lapack-man	rpm	leap 15.3	`3.5.0-4.6.1`	Not reported	OPENSUSE-SU-2022:0915-1	Not reported
Suse	lapack	rpm	linux enterprise software development kit 12 sp5	`3.5.0-3.9.1`	Not reported	SUSE-SU-2022:0913-1	Not reported
Suse	lapack	rpm	linux enterprise server 12 sp5	`3.5.0-3.9.1`	Not reported	SUSE-SU-2022:0913-1	Not reported
Suse	lapack	rpm	linux enterprise server for sap applications 12 sp5	`3.5.0-3.9.1`	Not reported	SUSE-SU-2022:0913-1	Not reported

[Debian bug #1001902]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libblas3]Fixed
Source package: [lapack]
Details (2)
- 3.11.0-2 · amd64 · bookworm
  Fixed · Fixed: 3.10.0-2
  dsa · lapack · debian · bookworm; dsa · lapack · debian · 12
- 3.11.0-2 · arm64 · bookworm
  Fixed · Fixed: 3.10.0-2
  dsa · lapack · debian · bookworm; dsa · lapack · debian · 12
[libblas64-3]Fixed
Source package: [lapack]
Details (2)
- 3.11.0-2 · amd64 · bookworm
  Fixed · Fixed: 3.10.0-2
  dsa · lapack · debian · bookworm; dsa · lapack · debian · 12
- 3.11.0-2 · arm64 · bookworm
  Fixed · Fixed: 3.10.0-2
  dsa · lapack · debian · bookworm; dsa · lapack · debian · 12
[libblas64-dev]Fixed
Source package: [lapack]
Details (2)
- 3.11.0-2 · amd64 · bookworm
  Fixed · Fixed: 3.10.0-2
  dsa · lapack · debian · bookworm; dsa · lapack · debian · 12
- 3.11.0-2 · arm64 · bookworm
  Fixed · Fixed: 3.10.0-2
  dsa · lapack · debian · bookworm; dsa · lapack · debian · 12
[libblas64-test]Fixed
Source package: [lapack]
Details (2)
- 3.11.0-2 · amd64 · bookworm
  Fixed · Fixed: 3.10.0-2
  dsa · lapack · debian · bookworm; dsa · lapack · debian · 12
- 3.11.0-2 · arm64 · bookworm
  Fixed · Fixed: 3.10.0-2
  dsa · lapack · debian · bookworm; dsa · lapack · debian · 12
[libblas-dev]Fixed
Source package: [lapack]
Details (2)
- 3.11.0-2 · amd64 · bookworm
  Fixed · Fixed: 3.10.0-2
  dsa · lapack · debian · bookworm; dsa · lapack · debian · 12
- 3.11.0-2 · arm64 · bookworm
  Fixed · Fixed: 3.10.0-2
  dsa · lapack · debian · bookworm; dsa · lapack · debian · 12
[libblas-test]Fixed
Source package: [lapack]
Details (2)
- 3.11.0-2 · amd64 · bookworm
  Fixed · Fixed: 3.10.0-2
  dsa · lapack · debian · bookworm; dsa · lapack · debian · 12
- 3.11.0-2 · arm64 · bookworm
  Fixed · Fixed: 3.10.0-2
  dsa · lapack · debian · bookworm; dsa · lapack · debian · 12
[liblapack3]Fixed
Source package: [lapack]
Details (2)
- 3.11.0-2 · amd64 · bookworm
  Fixed · Fixed: 3.10.0-2
  dsa · lapack · debian · bookworm; dsa · lapack · debian · 12
- 3.11.0-2 · arm64 · bookworm
  Fixed · Fixed: 3.10.0-2
  dsa · lapack · debian · bookworm; dsa · lapack · debian · 12
[liblapack64-3]Fixed
Source package: [lapack]
Details (2)
- 3.11.0-2 · amd64 · bookworm
  Fixed · Fixed: 3.10.0-2
  dsa · lapack · debian · bookworm; dsa · lapack · debian · 12
- 3.11.0-2 · arm64 · bookworm
  Fixed · Fixed: 3.10.0-2
  dsa · lapack · debian · bookworm; dsa · lapack · debian · 12
[liblapack64-dev]Fixed
Source package: [lapack]
Details (2)
- 3.11.0-2 · amd64 · bookworm
  Fixed · Fixed: 3.10.0-2
  dsa · lapack · debian · bookworm; dsa · lapack · debian · 12
- 3.11.0-2 · arm64 · bookworm
  Fixed · Fixed: 3.10.0-2
  dsa · lapack · debian · bookworm; dsa · lapack · debian · 12
[liblapack64-test]Fixed
Source package: [lapack]
Details (2)
- 3.11.0-2 · amd64 · bookworm
  Fixed · Fixed: 3.10.0-2
  dsa · lapack · debian · bookworm; dsa · lapack · debian · 12
- 3.11.0-2 · arm64 · bookworm
  Fixed · Fixed: 3.10.0-2
  dsa · lapack · debian · bookworm; dsa · lapack · debian · 12
[liblapack-dev]Fixed
Source package: [lapack]
Details (2)
- 3.11.0-2 · amd64 · bookworm
  Fixed · Fixed: 3.10.0-2
  dsa · lapack · debian · bookworm; dsa · lapack · debian · 12
- 3.11.0-2 · arm64 · bookworm
  Fixed · Fixed: 3.10.0-2
  dsa · lapack · debian · bookworm; dsa · lapack · debian · 12
[liblapack-doc]Fixed
Source package: [lapack]
Details (2)
- 3.11.0-2 · all · bookworm
  Fixed · Fixed: 3.10.0-2
  dsa · lapack · debian · bookworm; dsa · lapack · debian · 12
- 3.11.0-2 · all · bookworm
  Fixed · Fixed: 3.10.0-2
  dsa · lapack · debian · bookworm; dsa · lapack · debian · 12
[liblapacke]Fixed
Source package: [lapack]
Details (2)
- 3.11.0-2 · amd64 · bookworm
  Fixed · Fixed: 3.10.0-2
  dsa · lapack · debian · bookworm; dsa · lapack · debian · 12
- 3.11.0-2 · arm64 · bookworm
  Fixed · Fixed: 3.10.0-2
  dsa · lapack · debian · bookworm; dsa · lapack · debian · 12
[liblapacke64]Fixed
Source package: [lapack]
Details (2)
- 3.11.0-2 · amd64 · bookworm
  Fixed · Fixed: 3.10.0-2
  dsa · lapack · debian · bookworm; dsa · lapack · debian · 12
- 3.11.0-2 · arm64 · bookworm
  Fixed · Fixed: 3.10.0-2
  dsa · lapack · debian · bookworm; dsa · lapack · debian · 12
[liblapacke64-dev]Fixed
Source package: [lapack]
Details (2)
- 3.11.0-2 · amd64 · bookworm
  Fixed · Fixed: 3.10.0-2
  dsa · lapack · debian · bookworm; dsa · lapack · debian · 12
- 3.11.0-2 · arm64 · bookworm
  Fixed · Fixed: 3.10.0-2
  dsa · lapack · debian · bookworm; dsa · lapack · debian · 12
[liblapacke-dev]Fixed
Source package: [lapack]
Details (2)
- 3.11.0-2 · amd64 · bookworm
  Fixed · Fixed: 3.10.0-2
  dsa · lapack · debian · bookworm; dsa · lapack · debian · 12
- 3.11.0-2 · arm64 · bookworm
  Fixed · Fixed: 3.10.0-2
  dsa · lapack · debian · bookworm; dsa · lapack · debian · 12
[liblapack-test]Fixed
Source package: [lapack]
Details (2)
- 3.11.0-2 · amd64 · bookworm
  Fixed · Fixed: 3.10.0-2
  dsa · lapack · debian · bookworm; dsa · lapack · debian · 12
- 3.11.0-2 · arm64 · bookworm
  Fixed · Fixed: 3.10.0-2
  dsa · lapack · debian · bookworm; dsa · lapack · debian · 12
[libopenblas0]Fixed
Source package: [openblas]
Details (2)
- 0.3.21+ds-4 · amd64 · bookworm
  Fixed · Fixed: 0.3.18+ds-1
  dsa · openblas · debian · bookworm; dsa · openblas · debian · 12
- 0.3.21+ds-4 · arm64 · bookworm
  Fixed · Fixed: 0.3.18+ds-1
  dsa · openblas · debian · bookworm; dsa · openblas · debian · 12
[libopenblas0-openmp]Fixed
Source package: [openblas]
Details (2)
- 0.3.21+ds-4 · amd64 · bookworm
  Fixed · Fixed: 0.3.18+ds-1
  dsa · openblas · debian · bookworm; dsa · openblas · debian · 12
- 0.3.21+ds-4 · arm64 · bookworm
  Fixed · Fixed: 0.3.18+ds-1
  dsa · openblas · debian · bookworm; dsa · openblas · debian · 12
[libopenblas0-pthread]Fixed
Source package: [openblas]
Details (2)
- 0.3.21+ds-4 · amd64 · bookworm
  Fixed · Fixed: 0.3.18+ds-1
  dsa · openblas · debian · bookworm; dsa · openblas · debian · 12
- 0.3.21+ds-4 · arm64 · bookworm
  Fixed · Fixed: 0.3.18+ds-1
  dsa · openblas · debian · bookworm; dsa · openblas · debian · 12

Next results

Observed: Oct 23, 2026, 6:02:26 PM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]