In the Linux kernel, the following vulnerability has been resolved: iio: accel: kxsd9: fix runtime PM imbalance on write_raw() error kxsd9_write_raw() takes a runtime PM reference with pm_runtime_get_sync() but returns -EINVAL directly when a scale with a non-zero integer part is requested, skipping the matching pm_runtime_put_autosuspend(). This leaks a runtime PM usage-counter reference on every such write, after which the device can no longer autosuspend. Set the error code and fall through to the existing put instead of returning early.

A flaw was found in the Linux kernel's iio subsystem, specifically in the kxsd9 accelerometer driver. A local user could exploit this by requesting a scale with a non-zero integer part through the `kxsd9_write_raw()` function. This action causes a runtime Power Management (PM) usage-counter reference to leak, preventing the device from entering autosuspend mode. The consequence is increased power consumption and a denial of service for the device's power management capabilities.

Red Hat Enterprise Linux 10 Not affected kernel Red Hat Enterprise Linux 6 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel-rt Red Hat Enterprise Linux 8 Not affected kernel Red Hat Enterprise Linux 8 Not affected kernel-rt Red Hat Enterprise Linux 9 Not affected kernel Red Hat Enterprise Linux 9 Not affected kernel-rt https://www.cve.org/CVERecord?id=CVE-2026-64503 https://nvd.nist.gov/vuln/detail/CVE-2026-64503 https://lore.kernel.org/linux-cve-announce/2026072553-CVE-2026-64503-51c2@gregkh/T