TI-2026-47866 Aliases CVE-2026-68085 GHSA-mhcf-ghw6-c6wv

Bluetooth: hci_uart: clear HCI_UART_SENDING when write_work is canceled

LOW 36CWE-667Published 2026-08-10 · Updated 2026-10-19

Key facts

Attack vector: Adjacent network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: Partial Red Hat: 3 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-667 and the CVSS impact.

Summary

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_uart: clear HCI_UART_SENDING when write_work is canceled HCI_UART_SENDING bit in tx_state means write_work is pending and blocks queueing it again. Currently this bit is not cleared when canceling the work in hci_uart_close(), which blocks future writes when device is reopened later if write_work was pending. Fix by clearing HCI_UART_SENDING when canceling the work. Also make clearing of tx_skb safe by using disable_work_sync + enable_work instead of just cancel_work_sync. hci_uart_flush() purges the proto tx queue so we can cancel the pending write_work there, instead of doing it just in hci_uart_close(). Re-enable and possibly requeue the work after queue flush.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00195 9th percentileScored 2026-11-07

Fix Partial Linux (Linux): 6.12.96, 6.18.39, 5.11 +6Red Hat: 3 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

Vendor	Product	Affected versions	Fixed in	Status	Source
Linux	Linux	6.12.92 to before 6.12.96; 6.18.34 to before 6.18.39; 5.10.258 to before 5.11; 5.15.209 to before 5.16; 6.1.175 to before 6.2; 6.6.142 to before 6.7; 7.0.11 to before 7.1	6.12.96, 6.18.39, 5.11, 5.16, 6.2, 6.7, 7.1	Patch available	CNA
Linux	Linux	7.1 and later	6.12.96, 6.18.39, 7.1.4, 7.2	Patch available	CNA

Linux VendorLinux Affected 6.12.92 to before 6.12.96; 6.18.34 to before 6.18.39; 5.10.258 to before 5.11; 5.15.209 to before 5.16; 6.1.175 to before 6.2; 6.6.142 to before 6.7; 7.0.11 to before 7.1 Fixed in 6.12.96, 6.18.39, 5.11, 5.16, 6.2, 6.7, 7.1 Patch available CNA
Linux VendorLinux Affected 7.1 and later Fixed in 6.12.96, 6.18.39, 7.1.4, 7.2 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:o:linux:linux_kernel::::::::	—	—	Linux

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions — — ·Linux

Remediation

Fix · CNA Linux (Linux) Fixed in 6.12.96, 6.18.39, 5.11, 5.16, 6.2, 6.7, 7.1
Fix · CNA Linux (Linux) Fixed in 6.12.96, 6.18.39, 7.1.4, 7.2

Vendor assessments

Red Hat

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

Product	Status	Plan or fix
Red Hat Enterprise Linux 10	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 6	Affected	No fix planned: Out of support scope
Red Hat Enterprise Linux 9	Affected	No fix yet: Fix deferred

Not affected: 3 products

Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 9

Timeline

2026-10-02 Threatist record created from CVE-2026-68085
2026-10-03 Alias added: GHSA-mhcf-ghw6-c6wv
2026-10-16 CISA SSVC decision points changed
2026-10-20 Weakness changed · CISA ADP
2026-10-27 CVSS score changed · Red Hat
2026-10-29 Affected versions changed · Red Hat

References

Other 4

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-2021-02452 Incorrect authorization in Ubuntu linux kernel 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

See all 21741 →

Sources

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