CVE-2026-46051

md/raid5: fix soft lockup in retry_aligned_read()

State
Published
Severity
Not scored
Published
May 27, 2026
Updated
Oct 15, 2026
Reserved
May 13, 2026

Read the record on cve.org

Description

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

md/raid5: fix soft lockup in retry_aligned_read()

When retry_aligned_read() encounters an overlapped stripe, it releases the stripe via raid5_release_stripe() which puts it on the lockless released_stripes llist. In the next raid5d loop iteration, release_stripe_list() drains the stripe onto handle_list (since STRIPE_HANDLE is set by the original IO), but retry_aligned_read() runs before handle_active_stripes() and removes the stripe from handle_list via find_get_stripe() -> list_del_init(). This prevents handle_stripe() from ever processing the stripe to resolve the overlap, causing an infinite loop and soft lockup.

Fix this by using __release_stripe() with temp_inactive_list instead of raid5_release_stripe() in the failure path, so the stripe does not go through the released_stripes llist. This allows raid5d to break out of its loop, and the overlap will be resolved when the stripe is eventually processed by handle_stripe().

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6 to before 66df9f30673db66ac35145820a8e24906069ae57Affected
  • 773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6 to before 4166d5234fe8b6c3c7f796a6c198605356c5b355Affected
  • 773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6 to before a9055300e07d9d6800264d3c2560e1d0144689caAffected
  • 773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6 to before 09880592f5a9dc73377d6eb5ac123537b5f8df49Affected
  • 773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6 to before 80fc6ca2cbde018d52e13f305edcd643911bd94bAffected
  • 773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6 to before 1985cb3247e87ff6b8ca4bc5f9626f4f51024507Affected
  • 773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6 to before 883cc33b7af1c448663287f069ef9dfea001e90fAffected
  • 773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6 to before 7f9f7c697474268d9ef9479df3ddfe7cdcfbbffcAffected
LinuxLinux
  • 3.12Affected
  • before 3.12Not affected
  • 5.10.258 through 5.10.*Not affected
  • 5.15.209 through 5.15.*Not affected
  • 6.1.175 through 6.1.*Not affected
  • 6.6.140 through 6.6.*Not affected
  • 6.12.86 through 6.12.*Not affected
  • 6.18.27 through 6.18.*Not affected
  • 7.0.4 through 7.0.*Not affected
  • 7.1 and laterNot affected

References

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