CVE-2026-80677

In the Linux kernel, the following vulnerability has been resolved: driver core: use READ_ONCE() for dev->driver in dev_has_sync_state() dev_has_sync_state() reads dev->driver twice without holding device_lock() -- once for the NULL check and once to dereference ->sync_state. Some callers only hold device_links_write_lock, which doesn't prevent a concurrent unbind from clearing dev->driver via device_unbind_cleanup(). Fix it by reading dev->driver exactly once with READ_ONCE(), pairing with the WRITE_ONCE() in device_set_driver().

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/358697929351f619143f59c6a8a15a4994748b79
https://git.kernel.org/stable/c/51b3e1de53ee5b7775c7ff90e67fdb2665fce938
https://git.kernel.org/stable/c/5e79e0180515b31b2e2244dc3d256fd8b5a07021
https://git.kernel.org/stable/c/860885fcd2611bca8c28dac8b2c1c7ff160f763e
https://git.kernel.org/stable/c/89789e4c141904506163dcb91c7289a074573931
https://git.kernel.org/stable/c/9b0f4082a09760939588135d60a8e9cc994bfa3e
https://git.kernel.org/stable/c/cc77f0d91e3214e4292208f02a1dc09a31f9aac7
https://git.kernel.org/stable/c/e9506871a8ea304cde48ff4a57226df2aadddae3

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-28 08:16

Updated : 2026-08-29 07:16

NVD link : CVE-2026-80677

Mitre link : CVE-2026-80677

CVE.ORG link : CVE-2026-80677

JSON object : View

Products Affected

No product.

CWE

No CWE.

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Some callers only hold device_links_write_lock, which\ndoesn't prevent a concurrent unbind from clearing dev->driver via\ndevice_unbind_cleanup().\n\nFix it by reading dev->driver exactly once with READ_ONCE(), pairing\nwith the WRITE_ONCE() in device_set_driver()."}], "lastModified": "2026-08-29T07:16:50.073", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}