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TI-2026-33780 Aliases CVE-2026-46056GHSA-v6c2-56h6-9pgq

Bluetooth: hci_event: fix potential UAF in SSP passkey handlers

Priority MEDIUM 40CWE-416Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 39 fixed, 2 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.

Summary

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_event: fix potential UAF in SSP passkey handlers hci_conn lookup and field access must be covered by hdev lock in hci_user_passkey_notify_evt() and hci_keypress_notify_evt(), otherwise the connection can be freed concurrently. Extend the hci_dev_lock critical section to cover all conn usage in both handlers. Keep the existing keypress notification behavior unchanged by routing the early exits through a common unlock path.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00282 20th percentileScored 2026-11-07
Fix Partial Linux (Linux): 5.10.259, 5.15.210, 6.1.175 +5Red Hat: 13 advisoriesRed Hat: 39 fixed, 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux3.7 and later5.10.259, 5.15.210, 6.1.175, 6.6.140, 6.12.86, 6.18.27, 7.0.4, 7.1Patch availableCNA
  • Linux VendorLinux Affected 3.7 and later Fixed in 5.10.259, 5.15.210, 6.1.175, 6.6.140, 6.12.86, 6.18.27, 7.0.4, 7.1 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*3.7 to before 6.1.175; 6.2 to before 6.6.140; 6.7 to before 6.12.86; 6.13 to before 6.18.27; 6.19 to before 7.0.4VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 3.7 to before 6.1.175; 6.2 to before 6.6.140; 6.7 to before 6.12.86; 6.13 to before 6.18.27; 6.19 to before 7.0.4 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 5.10.259, 5.15.210, 6.1.175, 6.6.140, 6.12.86, 6.18.27, 7.0.4, 7.1

Red Hat 13 advisories

  • RHSA-2026:95721 Released 2026-11-05 · Red Hat rating Important
    kernel-rt security update
    • Red Hat Enterprise Linux for Real Time (v. 7 ELS) kernel-rt-3.10.0-1160.169.1.rt56.1321.el7, kernel-rt-debug-3.10.0-1160.169.1.rt56.1321.el7, kernel-rt-debug-devel-3.10.0-1160.169.1.rt56.1321.el7 +4
  • RHSA-2026:95556 Released 2026-11-05 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux Server (v. 7 ELS) bpftool-3.10.0-1160.169.1.el7, kernel-3.10.0-1160.169.1.el7, kernel-abi-whitelists-3.10.0-1160.169.1.el7 +11
    • Red Hat Enterprise Linux Server Optional (v. 7 ELS) kernel-debug-devel-3.10.0-1160.169.1.el7, kernel-tools-libs-devel-3.10.0-1160.169.1.el7
  • RHSA-2026:67723 Released 2026-09-16 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream E4S (v.9.2) kernel-64k-debug-devel-5.14.0-284.191.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.191.1.el9_2, kernel-64k-devel-5.14.0-284.191.1.el9_2 +10
    • Red Hat Enterprise Linux BaseOS E4S (v.9.2) bpftool-7.0.0-284.191.1.el9_2, kernel-5.14.0-284.191.1.el9_2, kernel-64k-5.14.0-284.191.1.el9_2 +29
Show 10 more Red Hat advisories
  • RHSA-2026:67721 Released 2026-09-16 · Red Hat rating Important
    kernel-rt security, bug fix, and enhancement update
    • Red Hat Enterprise Linux Real Time E4S (v.9.2) kernel-rt-5.14.0-284.191.1.rt14.476.el9_2, kernel-rt-core-5.14.0-284.191.1.rt14.476.el9_2, kernel-rt-debug-5.14.0-284.191.1.rt14.476.el9_2 +9
    • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2) kernel-rt-5.14.0-284.191.1.rt14.476.el9_2, kernel-rt-core-5.14.0-284.191.1.rt14.476.el9_2, kernel-rt-debug-5.14.0-284.191.1.rt14.476.el9_2 +11
  • RHSA-2026:65712 Released 2026-09-09 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream E4S (v.9.4) kernel-64k-debug-devel-5.14.0-427.149.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.149.1.el9_4, kernel-64k-devel-5.14.0-427.149.1.el9_4 +11
    • Red Hat Enterprise Linux BaseOS E4S (v.9.4) bpftool-7.3.0-427.149.1.el9_4, kernel-5.14.0-427.149.1.el9_4, kernel-64k-5.14.0-427.149.1.el9_4 +29
    • Red Hat Enterprise Linux Real Time E4S (v.9.4) kernel-rt-5.14.0-427.149.1.el9_4, kernel-rt-core-5.14.0-427.149.1.el9_4, kernel-rt-debug-5.14.0-427.149.1.el9_4 +9
    • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.4) kernel-rt-5.14.0-427.149.1.el9_4, kernel-rt-core-5.14.0-427.149.1.el9_4, kernel-rt-debug-5.14.0-427.149.1.el9_4 +11
  • RHSA-2026:65709 Released 2026-09-09 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux BaseOS E4S (v.8.8) bpftool-4.18.0-477.166.1.el8_8, kernel-4.18.0-477.166.1.el8_8, kernel-abi-stablelists-4.18.0-477.166.1.el8_8 +14
    • Red Hat Enterprise Linux BaseOS TUS (v.8.8) bpftool-4.18.0-477.166.1.el8_8, kernel-4.18.0-477.166.1.el8_8, kernel-abi-stablelists-4.18.0-477.166.1.el8_8 +14
  • RHSA-2026:65711 Released 2026-09-09 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux BaseOS AUS (v.8.6) bpftool-4.18.0-372.213.1.el8_6, kernel-4.18.0-372.213.1.el8_6, kernel-abi-stablelists-4.18.0-372.213.1.el8_6 +14
    • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6) bpftool-4.18.0-372.213.1.el8_6, kernel-4.18.0-372.213.1.el8_6, kernel-abi-stablelists-4.18.0-372.213.1.el8_6 +14
  • RHSA-2026:64767 Released 2026-09-08 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) kernel-64k-debug-devel-6.12.0-55.103.1.el10_0, kernel-64k-debug-devel-matched-6.12.0-55.103.1.el10_0, kernel-64k-devel-6.12.0-55.103.1.el10_0 +12
    • Red Hat Enterprise Linux BaseOS EUS (v. 10.0) kernel-6.12.0-55.103.1.el10_0, kernel-64k-6.12.0-55.103.1.el10_0, kernel-64k-core-6.12.0-55.103.1.el10_0 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) kernel-tools-libs-devel-6.12.0-55.103.1.el10_0, libperf-6.12.0-55.103.1.el10_0
    • Red Hat Enterprise Linux Real Time EUS (v. 10.0) kernel-rt-6.12.0-55.103.1.el10_0, kernel-rt-64k-6.12.0-55.103.1.el10_0, kernel-rt-64k-core-6.12.0-55.103.1.el10_0 +21
    • Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0) kernel-rt-6.12.0-55.103.1.el10_0, kernel-rt-core-6.12.0-55.103.1.el10_0, kernel-rt-debug-6.12.0-55.103.1.el10_0 +11
  • RHSA-2026:62568 Released 2026-09-02 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat CodeReady Linux Builder EUS (v.9.6) kernel-tools-libs-devel-5.14.0-570.138.1.el9_6, libperf-5.14.0-570.138.1.el9_6
    • Red Hat Enterprise Linux AppStream EUS (v.9.6) kernel-64k-debug-devel-5.14.0-570.138.1.el9_6, kernel-64k-debug-devel-matched-5.14.0-570.138.1.el9_6, kernel-64k-devel-5.14.0-570.138.1.el9_6 +12
    • Red Hat Enterprise Linux BaseOS EUS (v.9.6) kernel-5.14.0-570.138.1.el9_6, kernel-64k-5.14.0-570.138.1.el9_6, kernel-64k-core-5.14.0-570.138.1.el9_6 +28
    • Red Hat Enterprise Linux Real Time EUS (v.9.6) kernel-rt-5.14.0-570.138.1.el9_6, kernel-rt-64k-5.14.0-570.138.1.el9_6, kernel-rt-64k-core-5.14.0-570.138.1.el9_6 +21
    • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6) kernel-rt-5.14.0-570.138.1.el9_6, kernel-rt-core-5.14.0-570.138.1.el9_6, kernel-rt-debug-5.14.0-570.138.1.el9_6 +11
  • RHSA-2026:27789 Released 2026-06-22 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-687.17.1.el9_8, kernel-64k-debug-devel-matched-5.14.0-687.17.1.el9_8, kernel-64k-devel-5.14.0-687.17.1.el9_8 +12
    • Red Hat Enterprise Linux BaseOS (v. 9) kernel-5.14.0-687.17.1.el9_8, kernel-64k-5.14.0-687.17.1.el9_8, kernel-64k-core-5.14.0-687.17.1.el9_8 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-687.17.1.el9_8, libperf-5.14.0-687.17.1.el9_8
    • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-687.17.1.el9_8, kernel-rt-64k-5.14.0-687.17.1.el9_8, kernel-rt-64k-core-5.14.0-687.17.1.el9_8 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-687.17.1.el9_8, kernel-rt-core-5.14.0-687.17.1.el9_8, kernel-rt-debug-5.14.0-687.17.1.el9_8 +9
  • RHSA-2026:27288 Released 2026-06-20 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 10) kernel-64k-debug-devel-6.12.0-211.26.1.el10_2, kernel-64k-debug-devel-matched-6.12.0-211.26.1.el10_2, kernel-64k-devel-6.12.0-211.26.1.el10_2 +12
    • Red Hat Enterprise Linux BaseOS (v. 10) kernel-6.12.0-211.26.1.el10_2, kernel-64k-6.12.0-211.26.1.el10_2, kernel-64k-core-6.12.0-211.26.1.el10_2 +29
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) kernel-tools-libs-devel-6.12.0-211.26.1.el10_2, libperf-6.12.0-211.26.1.el10_2
    • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt-6.12.0-211.26.1.el10_2, kernel-rt-64k-6.12.0-211.26.1.el10_2, kernel-rt-64k-core-6.12.0-211.26.1.el10_2 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt-6.12.0-211.26.1.el10_2, kernel-rt-core-6.12.0-211.26.1.el10_2, kernel-rt-debug-6.12.0-211.26.1.el10_2 +9
  • RHSA-2026:26427 Released 2026-06-16 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-553.134.1.el8_10, kernel-4.18.0-553.134.1.el8_10, kernel-abi-stablelists-4.18.0-553.134.1.el8_10 +19
    • Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-553.134.1.el8_10
  • RHSA-2026:26428 Released 2026-06-16 · Red Hat rating Important
    kernel-rt security update
    • Red Hat Enterprise Linux NFV (v. 8) kernel-rt-4.18.0-553.134.1.rt7.475.el8_10, kernel-rt-core-4.18.0-553.134.1.rt7.475.el8_10, kernel-rt-debug-4.18.0-553.134.1.rt7.475.el8_10 +9
    • Red Hat Enterprise Linux RT (v. 8) kernel-rt-4.18.0-553.134.1.rt7.475.el8_10, kernel-rt-core-4.18.0-553.134.1.rt7.475.el8_10, kernel-rt-debug-4.18.0-553.134.1.rt7.475.el8_10 +7

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 9AffectedNo fix yet
Red Hat CodeReady Linux Builder EUS (v.9.6)Fixed RHSA-2026:62568
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:27288
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:27789
Red Hat Enterprise Linux AppStream E4S (v.9.2)Fixed RHSA-2026:67723
Red Hat Enterprise Linux AppStream E4S (v.9.4)Fixed RHSA-2026:65712
Red Hat Enterprise Linux AppStream EUS (v. 10.0)Fixed RHSA-2026:64767
Red Hat Enterprise Linux AppStream EUS (v.9.6)Fixed RHSA-2026:62568
Red Hat Enterprise Linux BaseOS (v. 10)Fixed RHSA-2026:27288
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2026:26427
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2026:27789
Red Hat Enterprise Linux BaseOS AUS (v.8.6)Fixed RHSA-2026:65711
Red Hat Enterprise Linux BaseOS E4S (v.8.8)Fixed RHSA-2026:65709
Red Hat Enterprise Linux BaseOS E4S (v.9.2)Fixed RHSA-2026:67723
Red Hat Enterprise Linux BaseOS E4S (v.9.4)Fixed RHSA-2026:65712
Red Hat Enterprise Linux BaseOS EUS (v. 10.0)Fixed RHSA-2026:64767
Red Hat Enterprise Linux BaseOS EUS (v.9.6)Fixed RHSA-2026:62568
Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6)Fixed RHSA-2026:65711
Red Hat Enterprise Linux BaseOS TUS (v.8.8)Fixed RHSA-2026:65709
Red Hat Enterprise Linux CRB (v. 8)Fixed RHSA-2026:26427
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2026:27288
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)Fixed RHSA-2026:27789
Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)Fixed RHSA-2026:64767
Red Hat Enterprise Linux NFV (v. 8)Fixed RHSA-2026:26428
Red Hat Enterprise Linux RT (v. 8)Fixed RHSA-2026:26428
Red Hat Enterprise Linux Real Time (v. 10)Fixed RHSA-2026:27288
Red Hat Enterprise Linux Real Time (v. 9)Fixed RHSA-2026:27789
Red Hat Enterprise Linux Real Time E4S (v.9.2)Fixed RHSA-2026:67721
Red Hat Enterprise Linux Real Time E4S (v.9.4)Fixed RHSA-2026:65712
Red Hat Enterprise Linux Real Time EUS (v. 10.0)Fixed RHSA-2026:64767
Red Hat Enterprise Linux Real Time EUS (v.9.6)Fixed RHSA-2026:62568
Red Hat Enterprise Linux Real Time for NFV (v. 10)Fixed RHSA-2026:27288
Red Hat Enterprise Linux Real Time for NFV (v. 9)Fixed RHSA-2026:27789
Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2)Fixed RHSA-2026:67721
Red Hat Enterprise Linux Real Time for NFV E4S (v.9.4)Fixed RHSA-2026:65712
Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0)Fixed RHSA-2026:64767
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6)Fixed RHSA-2026:62568
Red Hat Enterprise Linux Server (v. 7 ELS)Fixed RHSA-2026:95556
Red Hat Enterprise Linux Server Optional (v. 7 ELS)Fixed RHSA-2026:95556
Red Hat Enterprise Linux for Real Time (v. 7 ELS)Fixed RHSA-2026:95721

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-46056
  2. 2026-10-03 Alias added: GHSA-v6c2-56h6-9pgq
  3. 2026-10-16 CISA SSVC decision points changed
  4. 2026-10-16 Priority changed: LOW → MEDIUM
  5. 2026-10-19 Weakness changed · CISA ADP
  6. 2026-11-06 Fix available: Red Hat Enterprise Linux Server (v. 7 ELS), Red Hat Enterprise Linux Server Optional (v. 7 ELS) · Red Hat
  7. 2026-11-06 Fix available: RHSA-2026:95556 · Red Hat
  8. 2026-11-06 Fix available: Red Hat Enterprise Linux for Real Time (v. 7 ELS) · Red Hat
  9. 2026-11-06 Fix available: RHSA-2026:95721 · Red Hat

References

Patch 6

Other 2

  • TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
  • TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
  • TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
  • TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
  • TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
See all 15278 →

Sources

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