CVE-2026-90390 PUBLISHED

md/bitmap: resume array on backlog_store() error path

Assigner: Linux
Reserved: 11.09.2026 Published: 17.09.2026 Updated: 17.09.2026

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

md/bitmap: resume array on backlog_store() error path

backlog_store() suspends the array before checking whether a write-mostly device exists. If no such device exists, the error path only unlocks reconfig_mutex and leaves the array suspended, blocking subsequent I/O.

Use mddev_unlock_and_resume() to release both states.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 58226942ad3d1423785f815ede5bcc832574f2ea to 03aad318f0a1f039dddf98739e705fdca3bf0d86 (excl.)
  • affected from 58226942ad3d1423785f815ede5bcc832574f2ea to 6763fb409a0b4106676a52cf934440d9484b32c8 (excl.)
  • affected from 58226942ad3d1423785f815ede5bcc832574f2ea to cc543e769b97d563b089b9e0ebf8ad361d15076f (excl.)
  • affected from 58226942ad3d1423785f815ede5bcc832574f2ea to 2911cd0a0f4366a7e06832bc5f0a7fdcc138e4dc (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 6.7 is affected
  • unaffected from 0 to 6.7 (excl.)
  • unaffected from 6.12.110 to 6.12.* (incl.)
  • unaffected from 6.18.52 to 6.18.* (incl.)
  • unaffected from 7.2.6 to 7.2.* (incl.)
  • unaffected from 7.3-rc1 to * (incl.)

References