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CVE-2021-36086 SELinux

Affected softwareSELinux
Severity3.3 Low CVSS 3.1 2 scores
WeaknessUse after free (CWE-416)
Published1 Jul 2021
Updated14 Oct 2026

Description

The CIL compiler in SELinux 3.2 has a use-after-free in cil_reset_classpermission (called from cil_reset_classperms_set and cil_reset_classperms_list).

Exploitation status

No public exploit

No exploit has been reported in the sources we check. Published 5 years ago.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment no assessment published
  • Indexed PoC none indexed
  • EPSS 0.59% chance in 30 days

Waratek protection

Outside Waratek scope

A Java vulnerability, but not one Waratek protects. It affects only Java on a user's desktop (applets, Web Start, JavaFX, the installer), sits in a product the Waratek agent can't be installed into, or is in a package we don't expect in business applications. The decision below says which.

  • Protection none
  • Action not pursued none
  • Review automated Upstream data
  • Record active
Decided by The only affected product being a sealed appliance image, where Java runs but no -javaagent can be attached
Finding This CVE names only products the Waratek agent cannot be installed into (netapp/active_iq_unified_manager). They ship as sealed appliance images or as native code with no application JVM, so there is no start-up line to add -javaagent to. The vulnerability may well be a Java one; it is permanently out of ARMR's reach rather than outside its subject.

CVSS

3.3 LOW v3.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L 2 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

VersionScoreBandVectorAssignerType
CVSS 3.1 3.3 LOW CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L NVD Primary published
CVSS 2.0 2.1 none AV:L/AC:L/Au:N/C:N/I:N/A:P NVD Primary

Affected software and releases

Products and versions

8 products, 8 version entries
SourceVendorProductSchemeAffected versions
nvd debian debian linux generic 11.0
nvd fedoraproject fedora generic 35
nvd netapp active iq unified manager generic any version
nvd netapp bootstrap os generic any version
nvd netapp h610c firmware generic any version
nvd netapp h610s firmware generic any version
nvd netapp h615c firmware generic any version
nvd selinux project selinux generic < 3.3

References

URLTags
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=32177 Exploit, Issue Tracking, Patch, Third Party Advisory
https://github.com/SELinuxProject/selinux/commit/c49a8ea09501ad66e799ea41b8154b6770fec2c8 Patch, Third Party Advisory
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/selinux/OSV-2021-536.yaml Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U7ZYR3PIJ75N6U2IONJWCKZ5L2NKJTGR/ Broken Link
https://lists.debian.org/debian-lts-announce/2024/10/msg00021.html Mailing List, Third Party Advisory
https://security.netapp.com/advisory/ntap-20250207-0004/ Third Party Advisory
https://cert-portal.siemens.com/productcert/html/ssa-202008.html
https://cert-portal.siemens.com/productcert/html/ssa-398330.html

Timeline

Published2021-07-01By the CVE Program.
NVD record modified2026-10-14NVD's own last-modified date for this record.