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CVE PROGRAM SOURCE RECORD5.5 Medium

CVE-2021-47498

dm rq: don't queue request to blk-mq during DM suspend

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: dm rq: don't queue request to blk-mq during DM suspend DM uses blk-mq's quiesce/unquiesce to stop/start device mapper queue. But blk-mq's unquiesce may come from outside events, such as elevator switch, updating nr_requests or others, and request may come during suspend, so simply ask for blk-mq to requeue it. Fixes one kernel panic issue when running updating nr_requests and dm-mpath suspend/resume stress test.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 7b17c2f7292ba1f3f98dae3f7077f9e569653276 to < 8050652810bf38241edec8717393d2446e8036f1affected
  • 7b17c2f7292ba1f3f98dae3f7077f9e569653276 to < 8ca9745efe3528feb06ca4e117188038eea2d351affected
  • 7b17c2f7292ba1f3f98dae3f7077f9e569653276 to < b4459b11e84092658fa195a2587aff3b9637f0e7affected

Linux Linux

Default version status: affected

  • 4.10affected
  • 0 to < 4.10unaffected
  • 5.10.241 to ≤ 5.10.*unaffected
  • 5.14.14 to ≤ 5.14.*unaffected
  • 5.15 to ≤ *unaffected

References