CVE-2021-23134

medium
Published — · Modified —
CVSS v3
CVSS v2
VIR risk
5.5

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.

Predictions

Exploit likelihood
20%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-23134

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2021-23134.html

OS impact

OSVersionStatusFixed in
arch archfixed5.10.37-1
suse slesaffected
debian debianbookwormfixed5.10.38-1
debian debianbullseyefixed5.10.38-1
debian debianforkyfixed5.10.38-1
debian debiansidfixed5.10.38-1
debian debiantrixiefixed5.10.38-1

References

Verify integrity in audit chain (admin only). AS-IS.