CVE-2026-68085: Bluetooth: hci_uart: clear HCI_UART_SENDING when write_work is canceled

highCVSS 7.1CVE-2026-68085

CSIRTS triage

vendor: Linux product: Linux Kernel Memory corruption

What: The hci_uart Bluetooth driver fails to clear HCI_UART_SENDING state when write_work is canceled, causing use-after-free.
Who is affected: Systems with Bluetooth UART drivers enabled.
Urgency: High severity (CVSS 7.1); patch at high priority.
Action: Update to a patched Linux kernel version that addresses CVE-2026-68085.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: high — CVSS 7.1
Published: 2026-08-11
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-68085

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-680850.25% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 17% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-68085	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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