CVE-2026-80677

Description

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().

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EPSS — Exploit Prediction

0.0018

Probability of exploitation

0.07%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other References

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

Frequently Asked Questions

What is 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().

How do I check if I'm vulnerable to CVE-2026-80677? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.