CVE-2026-74372

In the Linux kernel, the following vulnerability has been resolved:

raid1: fix nr_pending leak in REQ_ATOMIC bad-block error path

In raid1_write_request(), each per-mirror loop iteration begins by

incrementing rdev->nr_pending. If a REQ_ATOMIC write encounters a

badblock within the requested range, the code jumps to err_handle

without dropping the reference taken for the current mirror.

err_handle's cleanup loop will only decrements for k < i and

r1_bio->bios[k] is non-NULL. The current slot is therefore skipped,

leaving its nr_pending reference leaked permanently. The reference

prevents the rdev from ever being removed, since raid1_remove_conf()

refuses to remove an rdev with nr_pending > 0.

Fix this by calling rdev_dec_pending() before jumping to err_handle.