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CVE-2021-23134

Severity7.8 High CVSS 3.1 2 scores
WeaknessUse after free (CWE-416)
Published12 May 2021
Updated30 Jul 2026

Description

Use After Free vulnerability in nfc sockets in the Linux Kernel before 5.12.4 allows local attackers to elevate their privileges. In typical configurations, the issue can only be triggered by a privileged local user with the CAP_NET_RAW capability.

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 0.38% 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/cloud_backup). 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

7.8 HIGH v3.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H 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 7.8 HIGH CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H psirt@paloaltonetworks.com Secondary published
CVSS 2.0 4.6 none AV:L/AC:L/Au:N/C:P/I:P/A:P NVD Primary

Affected software and releases

Products and versions

10 products, 18 version entries
SourceVendorProductSchemeAffected versions
nvd debian debian linux generic 9.0
nvd fedoraproject fedora generic 33 · 34
nvd linux linux kernel generic < 4.4.269 · ≥ 4.5 and < 4.9.269 · ≥ 4.10 and < 4.14.233 · ≥ 4.15 and < 4.19.191 · ≥ 4.20 and < 5.4.119 · ≥ 5.5 and < 5.10.37 · ≥ 5.11 and < 5.11.21 · ≥ 5.12 and < 5.12.4
nvd netapp cloud backup generic any version
nvd netapp h300s firmware generic any version
nvd netapp h410c firmware generic any version
nvd netapp h410s firmware generic any version
nvd netapp h500s firmware generic any version
nvd netapp h700s firmware generic any version
nvd netapp solidfire baseboard management controller firmware generic any version

References

URLTags
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=c61760e6940d Mailing List, Patch, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html Mailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html Mailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LZYORWNQIHNWRFYRDXBWYWBYM46PDZEN/ Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QALNQT4LJFVSSA3MWCIECVY4AFPP4X77/ Third Party Advisory
https://security.netapp.com/advisory/ntap-20210625-0007/ Third Party Advisory
https://www.openwall.com/lists/oss-security/2021/05/11/4 Mailing List, Patch, Third Party Advisory

Timeline

Published2021-05-12By the CVE Program.
NVD record modified2026-07-30NVD's own last-modified date for this record.