CVEvulnerability
CVE-2021-47498
5.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2024-05-22
- Last modified
- 2026-06-17
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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 configurations
• linux linux kernel (< 5.14.14)
• linux linux kernel 5.15
References
- https://git.kernel.org/stable/c/8050652810bf38241edec8717393d2446e8036f1 git.kernel.org
- https://git.kernel.org/stable/c/8ca9745efe3528feb06ca4e117188038eea2d351 Patch
- https://git.kernel.org/stable/c/b4459b11e84092658fa195a2587aff3b9637f0e7 Patch
- https://git.kernel.org/stable/c/8ca9745efe3528feb06ca4e117188038eea2d351 Patch
- https://git.kernel.org/stable/c/b4459b11e84092658fa195a2587aff3b9637f0e7 Patch
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html lists.debian.org