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Fencer Vulns
high 7.8

CVE-2022-49136 json

Bluetooth: hci_sync: Fix queuing commands when HCI_UNREGISTER is set

published 2025-02-26 20 mo ago modified 2026-08-05 3 mo ago also EUVD-2022-55087

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 17%
public exploits
0
none known

Summary

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: hci_sync: Fix queuing commands when HCI_UNREGISTER is set

hci_cmd_sync_queue shall return an error if HCI_UNREGISTER flag has been set as that means hci_unregister_dev has been called so it will likely cause a uaf after the timeout as the hdev will be freed.

Patch / fix

  • Linux Linux 5.17.3, 5.18
  • linux Debian 14, Debian 13, Debian 12 5.17.3-1

debian advisories DEBIAN-CVE-2022-49136

  • kernel-rt RHEL 8 4.18.0-553.60.1.rt7.401.el8_10
  • kernel-rt-kvm RHEL 8 4.18.0-553.60.1.rt7.401.el8_10
  • kernel-rt-core RHEL 8 4.18.0-553.60.1.rt7.401.el8_10
  • kernel-rt-modules RHEL 8 4.18.0-553.60.1.rt7.401.el8_10
  • kernel-rt-debug-kvm RHEL 8 4.18.0-553.60.1.rt7.401.el8_10
  • kernel-rt-debug-core RHEL 8 4.18.0-553.60.1.rt7.401.el8_10
  • kernel-rt-debug-modules RHEL 8 4.18.0-553.60.1.rt7.401.el8_10
  • kernel-rt-modules-extra RHEL 8 4.18.0-553.60.1.rt7.401.el8_10

red hat advisories RHSA-2025:10670RHSA-2025:10669RHSA-2023:2458

  • kernel-64kb SLES 15 SP5-LTSS, SLE High Performance Computing 15 SP5-LTSS, SLE High Performance Computing 15 SP5-ESPOS 5.14.21-150500.55.100.1
  • kernel-syms SLES for SAP 15 SP5, SLES 15 SP5-LTSS, SLE High Performance Computing 15 SP5-LTSS +1 more 5.14.21-150500.55.100.1
  • kernel-source SLES for SAP 15 SP5, SLES 15 SP5-LTSS, SLE Micro 5.5 +2 more 5.14.21-150500.55.100.1
  • kernel-default SLES for SAP 15 SP5, SLES 15 SP5-LTSS, SLE Micro 5.5 +3 more 5.14.21-150500.55.100.1
  • kernel-obs-build SLES for SAP 15 SP5, SLES 15 SP5-LTSS, SLE High Performance Computing 15 SP5-LTSS +1 more 5.14.21-150500.55.100.1
  • kernel-default-base SLES for SAP 15 SP5, SLES 15 SP5-LTSS, SLE Micro 5.5 +2 more 5.14.21-150500.55.100.1.150500.6.47.1
  • kernel-rt SLE Micro 5.5 5.14.21-150500.13.91.1
  • kernel-source-rt SLE Micro 5.5 5.14.21-150500.13.91.1

suse advisories SUSE-SU-2025:1241-1SUSE-SU-2025:1176-1

  • kernel AlmaLinux 8 4.18.0-553.60.1.el8_10
  • perf AlmaLinux 8 4.18.0-553.60.1.el8_10
  • bpftool AlmaLinux 8 4.18.0-553.60.1.el8_10
  • kernel-core AlmaLinux 8 4.18.0-553.60.1.el8_10
  • kernel-tools AlmaLinux 8 4.18.0-553.60.1.el8_10
  • python3-perf AlmaLinux 8 4.18.0-553.60.1.el8_10
  • kernel-modules AlmaLinux 8 4.18.0-553.60.1.el8_10
  • kernel-zfcpdump AlmaLinux 8 4.18.0-553.60.1.el8_10

almalinux advisories ALSA-2025:10669ALSA-2025:10670

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-49136 updated cvss 7.0

kernel: Bluetooth: hci_sync: Fix queuing commands when HCI_UNREGISTER is set

  • Red Hat Enterprise Linux 9 kernel-rt, kernel-rt-kvm, kernel-rt-core, kernel-rt-modules, kernel-rt-debug-kvm, kernel-rt-debug-core, +12 more
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux AppStream (v. 9) perf 5.14.0-284.11.1.el9_2, rtla 5.14.0-284.11.1.el9_2, kernel-devel-matched 5.14.0-284.11.1.el9_2, kernel-64k-devel-matched 5.14.0-284.11.1.el9_2, kernel-debug-devel-matched 5.14.0-284.11.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.11.1.el9_2, +5 more
    fixed: vendor fix RHSA-2023:2458
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-553.60.1.el8_10, kernel 4.18.0-553.60.1.el8_10, bpftool 4.18.0-553.60.1.el8_10, kernel-core 4.18.0-553.60.1.el8_10, kernel-tools 4.18.0-553.60.1.el8_10, python3-perf 4.18.0-553.60.1.el8_10, +15 more
    fixed: vendor fix RHSA-2025:10669
  • Red Hat Enterprise Linux BaseOS (v. 9) bpftool 7.0.0-284.11.1.el9_2, kernel 5.14.0-284.11.1.el9_2, kernel-64k 5.14.0-284.11.1.el9_2, kernel-core 5.14.0-284.11.1.el9_2, kernel-tools 5.14.0-284.11.1.el9_2, python3-perf 5.14.0-284.11.1.el9_2, +28 more
    fixed: vendor fix RHSA-2023:2458
  • Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-553.60.1.el8_10, kernel-debuginfo-common-aarch64 4.18.0-553.60.1.el8_10, kernel-debuginfo-common-ppc64le 4.18.0-553.60.1.el8_10
    fixed: vendor fix RHSA-2025:10669
  • Red Hat Enterprise Linux CRB (v. 9) kernel-debuginfo-common-s390x 5.14.0-284.11.1.el9_2, kernel-debuginfo-common-x86_64 5.14.0-284.11.1.el9_2, kernel-debuginfo-common-aarch64 5.14.0-284.11.1.el9_2, kernel-debuginfo-common-ppc64le 5.14.0-284.11.1.el9_2
    fixed: vendor fix RHSA-2023:2458
  • Red Hat Enterprise Linux NFV (v. 8) kernel-rt 4.18.0-553.60.1.rt7.401.el8_10, kernel-rt-kvm 4.18.0-553.60.1.rt7.401.el8_10, kernel-rt-core 4.18.0-553.60.1.rt7.401.el8_10, kernel-rt-modules 4.18.0-553.60.1.rt7.401.el8_10, kernel-rt-debug-kvm 4.18.0-553.60.1.rt7.401.el8_10, kernel-rt-debug-core 4.18.0-553.60.1.rt7.401.el8_10, +4 more Red Hat Enterprise Linux RT (v. 8) kernel-rt 4.18.0-553.60.1.rt7.401.el8_10, kernel-rt-core 4.18.0-553.60.1.rt7.401.el8_10, kernel-rt-modules 4.18.0-553.60.1.rt7.401.el8_10, kernel-rt-debug-core 4.18.0-553.60.1.rt7.401.el8_10, kernel-rt-debug-modules 4.18.0-553.60.1.rt7.401.el8_10, kernel-rt-modules-extra 4.18.0-553.60.1.rt7.401.el8_10, +2 more
    fixed: vendor fix RHSA-2025:10670
  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more Red Hat Enterprise Linux 10 kernel
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
20 mo ago

Exploit prediction

0.26% chance of exploitation in the next 30 days, higher than 17% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA ADP 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Linux Linux

Classification

Weakness
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.