CVE-2026-90278
Received
Received - Intake
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Vulnerability report for CVE-2026-90278, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-09-17
Last updated on: 2026-09-17
Assigner: kernel.org
Description
Description
In the Linux kernel, the following vulnerability has been resolved:
md: wait for behind writes before destroying bitmap
__md_stop() destroyed the bitmap before calling mddev_detach(). That made
mddev_detach() skip bitmap_ops->wait_behind_writes(), because the bitmap
was already disconnected from mddev.
This was still safe for the legacy bitmap because bitmap_destroy() waits
for behind writes itself. llbitmap keeps that wait in its
->wait_behind_writes() operation instead, while ->destroy() tears down the
llbitmap storage. With the old ordering, RAID1 behind-write completions
could still run after llbitmap storage had been freed.
Call mddev_detach() before md_bitmap_destroy() so the common detach path
can wait for behind writes while the bitmap is still alive. Only destroy
the bitmap after those users are gone.
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
Currently, no data is known.
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
