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CVE-2026-98669

UnknownEPSS 0.17%

Last modified

CVE-2026-98669 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: iio: buffer: serialize buffer teardown with mode claims Buffer-mode claims hold mlock to guarantee that the device remains in buffer mode until the claim is released. Normal buffer updates take info_exist_lock followed by mlock in iio_update_buffers(). However, iio_device_unregister() disables and deactivates all buffers without taking mlock. EPSS estimates a 0.17% chance of exploitation in the next 30 days.

Description

In the Linux kernel, the following vulnerability has been resolved: iio: buffer: serialize buffer teardown with mode claims Buffer-mode claims hold mlock to guarantee that the device remains in buffer mode until the claim is released. Normal buffer updates take info_exist_lock followed by mlock in iio_update_buffers(). However, iio_device_unregister() disables and deactivates all buffers without taking mlock. This can invalidate buffer state, including active_scan_mask, while a buffer-mode claim is held. Take mlock in iio_disable_all_buffers() so that unregister honors the mode-claim lifetime guarantee. The info_exist_lock -> mlock ordering matches iio_update_buffers().

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>= a9c471892d75847671a246619c2148578f22bbc6, < 261f54966ebf45ced5fe5e1fe5119c6c44e140ab; >= 7bca0af538a49dacb1470f233be0676bdc09605b, < cebbecb26d22368440c4779f8275d790cf347177; >= 0a8565425afd8ba0e1a0ea73e21da119ee6dacea, < 6a728408ff522b749c2a3c7e68f44e861fa0dbfb; >= 0a8565425afd8ba0e1a0ea73e21da119ee6dacea, < 89f3852a28fcf7bab599280cb082baa0675536db; >= 0a8565425afd8ba0e1a0ea73e21da119ee6dacea, < b466db9e68b4741af85f6c017e2bb0a2f025053f; >= 0a8565425afd8ba0e1a0ea73e21da119ee6dacea, < e63188d77e10c0951bf67da6c295f768fd1abf4b; >= 0a8565425afd8ba0e1a0ea73e21da119ee6dacea, < 84bb0fc46ccf6a545b8fdf57cda83770186ed8dd; >= 5.15.137, < 5.15.224; >= 6.1.60, < 6.1.191
LinuxLinux6.2

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-98669?
In the Linux kernel, the following vulnerability has been resolved: iio: buffer: serialize buffer teardown with mode claims Buffer-mode claims hold mlock to guarantee that the device remains in buffer mode until the claim is released. Normal buffer updates take info_exist_lock followed by mlock in iio_update_buffers(). However, iio_device_unregister() disables and deactivates all buffers without taking mlock. This can invalidate buffer state, including active_scan_mask, while a buffer-mode claim is held. Take mlock in iio_disable_all_buffers() so that unregister honors the mode-claim lifetime guarantee. The info_exist_lock -> mlock ordering matches iio_update_buffers().
How severe is CVE-2026-98669?
Severity scoring for CVE-2026-98669 is pending analysis. The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.
How do I fix CVE-2026-98669?
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