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CVE-2026-98772

UnknownEPSS 0.17%

Last modified

CVE-2026-98772 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: USB: serial: fix port tear down use-after-free Some drivers for multiport devices access port driver data from completion handlers of shared URBs submitted at attach() or first open() and stopped at disconnect() or last close(), respectively. A simple NULL check before accessing the driver data makes sure that a port state container has at least been allocated, but a completion handler can still race with port tear down. Reorder the disconnect handling so that ports are not deregistered (and their driver data freed) until after all ports have been hung up and the driver disconnect() callback has run so that all I/O has been stopped.. EPSS estimates a 0.17% chance of exploitation in the next 30 days.

Description

In the Linux kernel, the following vulnerability has been resolved: USB: serial: fix port tear down use-after-free Some drivers for multiport devices access port driver data from completion handlers of shared URBs submitted at attach() or first open() and stopped at disconnect() or last close(), respectively. A simple NULL check before accessing the driver data makes sure that a port state container has at least been allocated, but a completion handler can still race with port tear down. Reorder the disconnect handling so that ports are not deregistered (and their driver data freed) until after all ports have been hung up and the driver disconnect() callback has run so that all I/O has been stopped.

Metrics

EPSS Probability
0.17%

6.0th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

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

VendorProductVersions
LinuxLinux>= 2d93148ab6988cad872e65d694c95e8944e1b626, < 8ed69d299b9d7872f911f089e00cdd2ea6969d2c; >= 2d93148ab6988cad872e65d694c95e8944e1b626, < bf296d7b75bfd49dc519ad0406e89ddc5c3f02e3; >= 2d93148ab6988cad872e65d694c95e8944e1b626, < 94601d83fc4811485ca6fb1d50bece589fe1c24d; >= 2d93148ab6988cad872e65d694c95e8944e1b626, < e4a6883ad9b4686a5f4bd90ff55a44d7ab65bd3c; >= 2d93148ab6988cad872e65d694c95e8944e1b626, < 60cc9379c3e650d1ebfba4de63f1242537a62a32; >= 2d93148ab6988cad872e65d694c95e8944e1b626, < 5e8980a81af195c49084be5b4c031085b56c7443; >= 2d93148ab6988cad872e65d694c95e8944e1b626, < e80ee74206f260eb1282e7d1339ff146a4a410d0; >= 2d93148ab6988cad872e65d694c95e8944e1b626, < 33c920f7c5952dfc42d1b8ea6efe16b1f0bb0c5b
LinuxLinux2.6.30

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-98772?
In the Linux kernel, the following vulnerability has been resolved: USB: serial: fix port tear down use-after-free Some drivers for multiport devices access port driver data from completion handlers of shared URBs submitted at attach() or first open() and stopped at disconnect() or last close(), respectively. A simple NULL check before accessing the driver data makes sure that a port state container has at least been allocated, but a completion handler can still race with port tear down. Reorder the disconnect handling so that ports are not deregistered (and their driver data freed) until after all ports have been hung up and the driver disconnect() callback has run so that all I/O has been stopped.
How severe is CVE-2026-98772?
Severity scoring for CVE-2026-98772 is pending analysis. The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.
How do I fix CVE-2026-98772?
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