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TI-2021-12115 Aliases CVE-2021-32399GHSA-xw4j-8m9c-4vwq

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

Priority LOW 32CWE-362Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.

Summary

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

Why it matters now

EPSS 0.00691 53rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed Red Hat: 21 advisories

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 19

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*up to 5.12.2VulnerableLinux
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:o:netapp:solidfire_baseboard_management_controller_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:h:netapp:solidfire_baseboard_management_controller:-:*:*:*:*:*:*:*not specified by NVDRunning onNetApp
cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:*not specified by NVDRunning onNetApp
cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:*not specified by NVDRunning onNetApp
cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions up to 5.12.2 Vulnerable ·Linux
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
  • cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:o:netapp:solidfire_baseboard_management_controller_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:h:netapp:solidfire_baseboard_management_controller:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
  • cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
  • cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
  • cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
Show 9 more CPE
CPEVersionsRoleVendor
cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:*not specified by NVDRunning onNetApp
cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:h:netapp:h300e:-:*:*:*:*:*:*:*not specified by NVDRunning onNetApp
cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:h:netapp:h500e:-:*:*:*:*:*:*:*not specified by NVDRunning onNetApp
cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:h:netapp:h700e:-:*:*:*:*:*:*:*not specified by NVDRunning onNetApp
cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:*not specified by NVDRunning onNetApp
  • cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
  • cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:h:netapp:h300e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
  • cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:h:netapp:h500e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
  • cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:h:netapp:h700e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
  • cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp

Remediation

Red Hat 21 advisories

  • RHSA-2022:0157 Released 2022-01-18 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux Server (v. 6 ELS) kernel-2.6.32-754.43.1.el6, kernel-abi-whitelists-2.6.32-754.43.1.el6, kernel-debug-2.6.32-754.43.1.el6 +7
    • Red Hat Enterprise Linux Server Optional (v. 6 ELS) python-perf-2.6.32-754.43.1.el6
  • RHSA-2021:3725 Released 2021-10-05 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux Server AUS (v. 7.4) kernel-3.10.0-693.94.1.el7, kernel-abi-whitelists-3.10.0-693.94.1.el7, kernel-debug-3.10.0-693.94.1.el7 +7
    • Red Hat Enterprise Linux Server Optional AUS (v. 7.4) kernel-tools-libs-devel-3.10.0-693.94.1.el7
  • RHSA-2021:3523 Released 2021-09-14 · Red Hat rating Important
    kpatch-patch security update
    • Red Hat Enterprise Linux Server E4S (v. 7.7) kpatch-patch-3_10_0-1062_36_1-1-5.el7, kpatch-patch-3_10_0-1062_37_1-1-5.el7, kpatch-patch-3_10_0-1062_40_1-1-5.el7 +6
Show 18 more Red Hat advisories
  • RHSA-2021:3522 Released 2021-09-14 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux Server AUS (v. 7.7) bpftool-3.10.0-1062.56.1.el7, kernel-3.10.0-1062.56.1.el7, kernel-abi-whitelists-3.10.0-1062.56.1.el7 +8
    • Red Hat Enterprise Linux Server E4S (v. 7.7) bpftool-3.10.0-1062.56.1.el7, kernel-3.10.0-1062.56.1.el7, kernel-abi-whitelists-3.10.0-1062.56.1.el7 +9
    • Red Hat Enterprise Linux Server Optional AUS (v. 7.7) kernel-tools-libs-devel-3.10.0-1062.56.1.el7
    • Red Hat Enterprise Linux Server Optional E4S (v. 7.7) kernel-debug-devel-3.10.0-1062.56.1.el7, kernel-tools-libs-devel-3.10.0-1062.56.1.el7
    • Red Hat Enterprise Linux Server Optional TUS (v. 7.7) kernel-tools-libs-devel-3.10.0-1062.56.1.el7
    • Red Hat Enterprise Linux Server TUS (v. 7.7) bpftool-3.10.0-1062.56.1.el7, kernel-3.10.0-1062.56.1.el7, kernel-abi-whitelists-3.10.0-1062.56.1.el7 +8
  • RHSA-2021:3477 Released 2021-09-09 · Red Hat rating Important
    RHV-H security update (redhat-virtualization-host) 4.3.18
    • RHEL 7-based RHEV-H for RHEV 4 (build requirements) redhat-virtualization-host-4.3.18-20210903.0.el7_9, redhat-virtualization-host-image-update-4.3.18-20210903.0.el7_9
    • Red Hat Virtualization 4 Hypervisor for RHEL 7 redhat-virtualization-host-4.3.18-20210903.0.el7_9, redhat-virtualization-host-image-update-4.3.18-20210903.0.el7_9
  • RHSA-2021:3399 Released 2021-08-31 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux Server AUS (v. 7.2) kernel-3.10.0-327.100.1.el7, kernel-abi-whitelists-3.10.0-327.100.1.el7, kernel-debug-3.10.0-327.100.1.el7 +7
    • Red Hat Enterprise Linux Server Optional AUS (v. 7.2) kernel-tools-libs-devel-3.10.0-327.100.1.el7
  • RHSA-2021:3392 Released 2021-08-31 · Red Hat rating Important
    kpatch-patch security update
    • Red Hat Enterprise Linux Server E4S (v. 7.6) kpatch-patch-3_10_0-957_61_1-1-5.el7, kpatch-patch-3_10_0-957_61_2-1-5.el7, kpatch-patch-3_10_0-957_62_1-1-5.el7 +6
  • RHSA-2021:3381 Released 2021-08-31 · Red Hat rating Important
    kpatch-patch security update
    • Red Hat Enterprise Linux Server (v. 7) kpatch-patch-3_10_0-1160-1-8.el7, kpatch-patch-3_10_0-1160_11_1-1-7.el7, kpatch-patch-3_10_0-1160_15_2-1-7.el7 +8
  • RHSA-2021:3363 Released 2021-08-31 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat CodeReady Linux Builder EUS (v. 8.2) kernel-tools-libs-devel-4.18.0-193.64.1.el8_2
    • Red Hat Enterprise Linux BaseOS EUS (v. 8.2) bpftool-4.18.0-193.64.1.el8_2, kernel-4.18.0-193.64.1.el8_2, kernel-abi-whitelists-4.18.0-193.64.1.el8_2 +19
  • RHSA-2021:3327 Released 2021-08-31 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux Client (v. 7) bpftool-3.10.0-1160.41.1.el7, kernel-3.10.0-1160.41.1.el7, kernel-abi-whitelists-3.10.0-1160.41.1.el7 +8
    • Red Hat Enterprise Linux Client Optional (v. 7) kernel-tools-libs-devel-3.10.0-1160.41.1.el7
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-tools-libs-devel-3.10.0-1160.41.1.el7
    • Red Hat Enterprise Linux Server (v. 7) bpftool-3.10.0-1160.41.1.el7, kernel-3.10.0-1160.41.1.el7, kernel-abi-whitelists-3.10.0-1160.41.1.el7 +11
    • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debug-devel-3.10.0-1160.41.1.el7, kernel-tools-libs-devel-3.10.0-1160.41.1.el7
    • Red Hat Enterprise Linux Workstation (v. 7) bpftool-3.10.0-1160.41.1.el7, kernel-3.10.0-1160.41.1.el7, kernel-abi-whitelists-3.10.0-1160.41.1.el7 +8
    • Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-tools-libs-devel-3.10.0-1160.41.1.el7
  • RHSA-2021:3328 Released 2021-08-31 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt-3.10.0-1160.41.1.rt56.1181.el7, kernel-rt-debug-3.10.0-1160.41.1.rt56.1181.el7, kernel-rt-debug-devel-3.10.0-1160.41.1.rt56.1181.el7 +4
    • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt-3.10.0-1160.41.1.rt56.1181.el7, kernel-rt-debug-3.10.0-1160.41.1.rt56.1181.el7, kernel-rt-debug-devel-3.10.0-1160.41.1.rt56.1181.el7 +7
  • RHSA-2021:3380 Released 2021-08-31 · Red Hat rating Important
    kpatch-patch security update
    • Red Hat Enterprise Linux BaseOS EUS (v. 8.2) kpatch-patch-4_18_0-193_19_1-1-11.el8_2, kpatch-patch-4_18_0-193_28_1-1-9.el8_2, kpatch-patch-4_18_0-193_29_1-1-9.el8_2 +8
  • RHSA-2021:3375 Released 2021-08-31 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Real Time EUS (v. 8.2) kernel-rt-4.18.0-193.64.1.rt13.115.el8_2, kernel-rt-core-4.18.0-193.64.1.rt13.115.el8_2, kernel-rt-debug-4.18.0-193.64.1.rt13.115.el8_2 +7
    • Red Hat Enterprise Linux Real Time for NFV EUS (v. 8.2) kernel-rt-4.18.0-193.64.1.rt13.115.el8_2, kernel-rt-core-4.18.0-193.64.1.rt13.115.el8_2, kernel-rt-debug-4.18.0-193.64.1.rt13.115.el8_2 +9
  • RHSA-2021:3320 Released 2021-08-31 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux Server AUS (v. 7.6) bpftool-3.10.0-957.80.1.el7, kernel-3.10.0-957.80.1.el7, kernel-abi-whitelists-3.10.0-957.80.1.el7 +8
    • Red Hat Enterprise Linux Server E4S (v. 7.6) kernel-3.10.0-957.80.1.el7, kernel-abi-whitelists-3.10.0-957.80.1.el7, kernel-bootwrapper-3.10.0-957.80.1.el7 +8
    • Red Hat Enterprise Linux Server Optional AUS (v. 7.6) kernel-tools-libs-devel-3.10.0-957.80.1.el7
    • Red Hat Enterprise Linux Server Optional E4S (v. 7.6) kernel-debug-devel-3.10.0-957.80.1.el7, kernel-tools-libs-devel-3.10.0-957.80.1.el7
    • Red Hat Enterprise Linux Server Optional TUS (v. 7.6) kernel-tools-libs-devel-3.10.0-957.80.1.el7
    • Red Hat Enterprise Linux Server TUS (v. 7.6) bpftool-3.10.0-957.80.1.el7, kernel-3.10.0-957.80.1.el7, kernel-abi-whitelists-3.10.0-957.80.1.el7 +8
  • RHSA-2021:3321 Released 2021-08-31 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux Server AUS (v. 7.3) kernel-3.10.0-514.92.1.el7, kernel-abi-whitelists-3.10.0-514.92.1.el7, kernel-debug-3.10.0-514.92.1.el7 +7
    • Red Hat Enterprise Linux Server Optional AUS (v. 7.3) kernel-tools-libs-devel-3.10.0-514.92.1.el7
  • RHSA-2021:3173 Released 2021-08-17 · Red Hat rating Important
    kernel security update
    • Red Hat CodeReady Linux Builder EUS (v. 8.1) kernel-tools-libs-devel-4.18.0-147.52.1.el8_1
    • Red Hat Enterprise Linux BaseOS EUS (v. 8.1) bpftool-4.18.0-147.52.1.el8_1, kernel-4.18.0-147.52.1.el8_1, kernel-abi-whitelists-4.18.0-147.52.1.el8_1 +19
  • RHSA-2021:3181 Released 2021-08-17 · Red Hat rating Important
    kpatch-patch security update
    • Red Hat Enterprise Linux BaseOS EUS (v. 8.1) kpatch-patch-4_18_0-147_27_1-1-12.el8_1, kpatch-patch-4_18_0-147_32_1-1-10.el8_1, kpatch-patch-4_18_0-147_34_1-1-10.el8_1 +6
  • RHSA-2021:2736 Released 2021-07-22 · Red Hat rating Important
    Red Hat Virtualization Host security and bug fix update [ovirt-4.4.7]
    • Red Hat Virtualization 4 Hypervisor for RHEL 8 redhat-virtualization-host-4.4.7-20210715.1.el8_4, redhat-virtualization-host-image-update-4.4.7-20210715.1.el8_4
  • RHSA-2021:2716 Released 2021-07-21 · Red Hat rating Important
    kpatch-patch security update
    • Red Hat Enterprise Linux BaseOS (v. 8) kpatch-patch-4_18_0-305-1-3.el8, kpatch-patch-4_18_0-305_3_1-1-2.el8_4, kpatch-patch-4_18_0-305_7_1-1-1.el8_4
  • RHSA-2021:2714 Released 2021-07-20 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat CodeReady Linux Builder (v. 8) kernel-tools-libs-devel-4.18.0-305.10.2.el8_4
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-305.10.2.el8_4, kernel-4.18.0-305.10.2.el8_4, kernel-abi-stablelists-4.18.0-305.10.2.el8_4 +19
  • RHSA-2021:2715 Released 2021-07-20 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Real Time (v. 8) kernel-rt-4.18.0-305.10.2.rt7.83.el8_4, kernel-rt-core-4.18.0-305.10.2.rt7.83.el8_4, kernel-rt-debug-4.18.0-305.10.2.rt7.83.el8_4 +7
    • Red Hat Enterprise Linux Real Time for NFV (v. 8) kernel-rt-4.18.0-305.10.2.rt7.83.el8_4, kernel-rt-core-4.18.0-305.10.2.rt7.83.el8_4, kernel-rt-debug-4.18.0-305.10.2.rt7.83.el8_4 +9

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
RHEL 7-based RHEV-H for RHEV 4 (build requirements)Fixed RHSA-2021:3477
Red Hat CodeReady Linux Builder (v. 8)Fixed RHSA-2021:2714
Red Hat CodeReady Linux Builder EUS (v. 8.1)Fixed RHSA-2021:3173
Red Hat CodeReady Linux Builder EUS (v. 8.2)Fixed RHSA-2021:3363
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2021:2714, RHSA-2021:2716
Red Hat Enterprise Linux BaseOS EUS (v. 8.1)Fixed RHSA-2021:3173, RHSA-2021:3181
Red Hat Enterprise Linux BaseOS EUS (v. 8.2)Fixed RHSA-2021:3363, RHSA-2021:3380
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2021:3327
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2021:3327
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2021:3327
Red Hat Enterprise Linux Real Time (v. 8)Fixed RHSA-2021:2715
Red Hat Enterprise Linux Real Time EUS (v. 8.2)Fixed RHSA-2021:3375
Red Hat Enterprise Linux Real Time for NFV (v. 8)Fixed RHSA-2021:2715
Red Hat Enterprise Linux Real Time for NFV EUS (v. 8.2)Fixed RHSA-2021:3375
Red Hat Enterprise Linux Server (v. 6 ELS)Fixed RHSA-2022:0157
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2021:3327, RHSA-2021:3381
Red Hat Enterprise Linux Server AUS (v. 7.2)Fixed RHSA-2021:3399
Red Hat Enterprise Linux Server AUS (v. 7.3)Fixed RHSA-2021:3321
Red Hat Enterprise Linux Server AUS (v. 7.4)Fixed RHSA-2021:3725
Red Hat Enterprise Linux Server AUS (v. 7.6)Fixed RHSA-2021:3320
Red Hat Enterprise Linux Server AUS (v. 7.7)Fixed RHSA-2021:3522
Red Hat Enterprise Linux Server E4S (v. 7.6)Fixed RHSA-2021:3320, RHSA-2021:3392
Red Hat Enterprise Linux Server E4S (v. 7.7)Fixed RHSA-2021:3522, RHSA-2021:3523
Red Hat Enterprise Linux Server Optional (v. 6 ELS)Fixed RHSA-2022:0157
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2021:3327
Red Hat Enterprise Linux Server Optional AUS (v. 7.2)Fixed RHSA-2021:3399
Red Hat Enterprise Linux Server Optional AUS (v. 7.3)Fixed RHSA-2021:3321
Red Hat Enterprise Linux Server Optional AUS (v. 7.4)Fixed RHSA-2021:3725
Red Hat Enterprise Linux Server Optional AUS (v. 7.6)Fixed RHSA-2021:3320
Red Hat Enterprise Linux Server Optional AUS (v. 7.7)Fixed RHSA-2021:3522
Red Hat Enterprise Linux Server Optional E4S (v. 7.6)Fixed RHSA-2021:3320
Red Hat Enterprise Linux Server Optional E4S (v. 7.7)Fixed RHSA-2021:3522
Red Hat Enterprise Linux Server Optional TUS (v. 7.6)Fixed RHSA-2021:3320
Red Hat Enterprise Linux Server Optional TUS (v. 7.7)Fixed RHSA-2021:3522
Red Hat Enterprise Linux Server TUS (v. 7.6)Fixed RHSA-2021:3320
Red Hat Enterprise Linux Server TUS (v. 7.7)Fixed RHSA-2021:3522
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2021:3327
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2021:3327
Red Hat Enterprise Linux for Real Time (v. 7)Fixed RHSA-2021:3328
Red Hat Enterprise Linux for Real Time for NFV (v. 7)Fixed RHSA-2021:3328
Red Hat Virtualization 4 Hypervisor for RHEL 7Fixed RHSA-2021:3477
Red Hat Virtualization 4 Hypervisor for RHEL 8Fixed RHSA-2021:2736
Not affected: 4 products
  • RHEL 7-based RHEV-H for RHEV 4 (build requirements)
  • RHEL 8-based RHEV-H for RHEV 4 (build requirements)
  • Red Hat Enterprise Linux 9
  • Red Hat Virtualization 4 Hypervisor for RHEL 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-32399
  2. 2026-10-03 Alias added: GHSA-xw4j-8m9c-4vwq

References

Exploit 1

Patch 2

Advisory 3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences