In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btusb: fix use-after-free on marvell probe failure Make sure to stop… (CVE-2026-64470)
A use-after-free vulnerability in the Linux kernel's Bluetooth btusb driver related to Marvell probe failure has been fixed. The issue occurs when TX URBs are not properly stopped during Marvell out-of-band wakeup configuration on probe failures, leading to use-after-free in the completion callback. This vulnerability was identified during a review of a fix for a wakeup source leak in btusb probe error paths.
AI Analysis
Technical Summary
The Linux kernel Bluetooth btusb driver contained a use-after-free vulnerability triggered by failures in the Marvell device probe process. Specifically, if the probe failed after submitting TX URBs during out-of-band wakeup configuration, these URBs were not stopped, causing use-after-free conditions in the completion callback. The vulnerability was reported by Sashiko and has been resolved by ensuring proper stopping of TX URBs on later probe failures.
Potential Impact
The vulnerability could lead to use-after-free conditions in kernel space, which may cause system instability or potential escalation of privileges if exploited. However, no known exploits are reported in the wild at this time.
Mitigation Recommendations
A fix has been implemented in the Linux kernel to address this issue. Users should update their Linux kernel to a version that includes this patch to mitigate the vulnerability. Since this is a kernel-level issue, applying the official kernel update is the recommended remediation.
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btusb: fix use-after-free on marvell probe failure Make sure to stop… (CVE-2026-64470)
Description
A use-after-free vulnerability in the Linux kernel's Bluetooth btusb driver related to Marvell probe failure has been fixed. The issue occurs when TX URBs are not properly stopped during Marvell out-of-band wakeup configuration on probe failures, leading to use-after-free in the completion callback. This vulnerability was identified during a review of a fix for a wakeup source leak in btusb probe error paths.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Linux kernel Bluetooth btusb driver contained a use-after-free vulnerability triggered by failures in the Marvell device probe process. Specifically, if the probe failed after submitting TX URBs during out-of-band wakeup configuration, these URBs were not stopped, causing use-after-free conditions in the completion callback. The vulnerability was reported by Sashiko and has been resolved by ensuring proper stopping of TX URBs on later probe failures.
Potential Impact
The vulnerability could lead to use-after-free conditions in kernel space, which may cause system instability or potential escalation of privileges if exploited. However, no known exploits are reported in the wild at this time.
Mitigation Recommendations
A fix has been implemented in the Linux kernel to address this issue. Users should update their Linux kernel to a version that includes this patch to mitigate the vulnerability. Since this is a kernel-level issue, applying the official kernel update is the recommended remediation.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-mrw8-73g6-9x3w
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-64470"]
- Ecosystems
- []
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a6542069c2644c7f8082390
Added to database: 07/25/2026, 23:08:54 UTC
Last enriched: 07/25/2026, 23:16:26 UTC
Last updated: 07/26/2026, 03:54:51 UTC
Views: 4
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