CVE-2026-98695USB: serial: fix ioctl hangup race
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: USB: serial: fix ioctl hangup race The tty ioctls can race with hangup and end up calling into a tty driver for a device that is already gone or powered down. Serialise the callbacks using the tty port mutex and add the missing checks to make sure the port has not been hung up before accessing port driver data or hardware. This specifically avoids dereferencing a NULL-pointer if a device is disconnected during lengthy break signalling. Note that TIOCGICOUNT and TIOCMIWAIT do not access port driver data or hardware and are therefore not affected by the race.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 18, 2026
Affected products
Linux Linux linux:linux (from the name) | from f34d7a5b7010b82fe97da95496b9971435530062 before ae0da9a5c1ca95c20cc5feffd511ce6eae75924e; from f34d7a5b7010b82fe97da95496b9971435530062 before 4597ddd6168ae2a4123404e5f0871f1070dc7773; from f34d7a5b7010b82fe97da95496b9971435530062 before 7912a95d1345c77d8d63b530b00c118700b78abd; from f34d7a5b7010b82fe97da95496b9971435530062 before ae0e61d95677efa778379853e495d748e6efbf95 | CNA record |
References
- https://git.kernel.org/stable/c/ae0da9a5c1ca95c20cc5feffd511ce6eae75924e
- https://git.kernel.org/stable/c/4597ddd6168ae2a4123404e5f0871f1070dc7773
- https://git.kernel.org/stable/c/7912a95d1345c77d8d63b530b00c118700b78abd
- https://git.kernel.org/stable/c/ae0e61d95677efa778379853e495d748e6efbf95
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.