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CVE-2026-98695

UnknownEPSS 0.20%

Last modified

CVE-2026-98695 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 0.20% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability
0.20%

9.8th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= f34d7a5b7010b82fe97da95496b9971435530062, < c7ef25e96dc3f808eb891bbbd43b6a682846eb0c; >= f34d7a5b7010b82fe97da95496b9971435530062, < 98f0a25134bfce44ebd1db0341fa0e8603ff276d; >= f34d7a5b7010b82fe97da95496b9971435530062, < 3a728adbed9fd822f99a9d9c5ebad5c3b565ba4a; >= f34d7a5b7010b82fe97da95496b9971435530062, < 24d6edb6bd7f7a9e6cee2f8fe435781daab8aa0f; >= f34d7a5b7010b82fe97da95496b9971435530062, < ae0da9a5c1ca95c20cc5feffd511ce6eae75924e; >= f34d7a5b7010b82fe97da95496b9971435530062, < 4597ddd6168ae2a4123404e5f0871f1070dc7773; >= f34d7a5b7010b82fe97da95496b9971435530062, < 7912a95d1345c77d8d63b530b00c118700b78abd; >= f34d7a5b7010b82fe97da95496b9971435530062, < ae0e61d95677efa778379853e495d748e6efbf95
LinuxLinux2.6.26

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-98695?
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.
How severe is CVE-2026-98695?
Severity scoring for CVE-2026-98695 is pending analysis. The EPSS model estimates a 0.20% probability of exploitation in the next 30 days.
How do I fix CVE-2026-98695?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST