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HIGH

CVE-2021-32399

CVSS v3

7

HIGH

EPSS Score

0.7 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • kernel-tools-libs-develAlmaLinux:8all versions · fixed in 4.18.0-305.10.2.el8_4

Vendor advisories

  • CVE-2021-32399 Red Hat Product Security1,247 products fixed

    kernel: race condition for removal of the HCI controller

  • RHSA-2022:0157 Red Hat Product Security56 products fixed

    Red Hat Security Advisory: kernel security update

  • RHSA-2021:3725 Red Hat Product Security24 products fixed

    Red Hat Security Advisory: kernel security and bug fix update

  • RHSA-2021:3523 Red Hat Product Security45 products fixed

    Red Hat Security Advisory: kpatch-patch security update

  • RHSA-2021:3522 Red Hat Product Security106 products fixed

    Red Hat Security Advisory: kernel security and bug fix update

  • RHSA-2021:3477 Red Hat Product Security4 products fixed

    Red Hat Security Advisory: RHV-H security update (redhat-virtualization-host) 4.3.18

16 more advisories

Full record on NVD

Description

net/bluetooth/hci_request.c in the Linux kernel through 5.12.2 has a race condition for removal of the HCI controller.

Technical details

Published
2021-05-10

Frequently asked questions

What is CVE-2021-32399?

net/bluetooth/hci_request.c in the Linux kernel through 5.12.2 has a race condition for removal of the HCI controller.

Is CVE-2021-32399 actively exploited?

Active exploitation of CVE-2021-32399 has not been confirmed. Its EPSS score was 0.7% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-32399?

CVE-2021-32399 has a CVSS v3 base score of 7 (HIGH severity).

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