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Review reviewHigh

CVE-2026-46327

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: dm: fix unlocked test for dm_suspended_md The function dm_blk_report_zones tests if the device is suspended with the "dm_suspended_md" call. However, this function is called without holding any locks, so the device may be suspended just after it. Move the call to dm_suspended_md after dm_get_live_table, so that the device can't be suspended after the suspended state was tested.

CVSS
7.8
EPSS
0.12%
2.14% percentile
CISA KEV
Not listed
Published
2026.06.09
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.12%
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: dm: fix unlocked test for dm_suspended_md The function dm_blk_report_zones tests if the device is suspended with the "dm_suspended_md" call. However, this function is called without holding any locks, so the device may be suspended just after it. Move the call to dm_suspended_md after dm_get_live_table, so that the device can't be suspended after the suspended state was tested.

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= f9c1bdf24615303d48a2d0fd629c88f3189563aa < 175ac0a6115400278d3900f5a04a58b17b3f6cd0, >= 37f53a2c60d03743e0eacf7a0c01c279776fef4e < 7a3385e97af2b6f485fef11e82d8c29adee4be93, >= 37f53a2c60d03743e0eacf7a0c01c279776fef4e < d809a36692ee1394cac85ce6ba7cf8ea58da5812, >= 37f53a2c60d03743e0eacf7a0c01c279776fef4e < 24c405fdbe215c45e57bba672cc42859038491ee, >= d19bc1b4dd5f322980b1f05f79b2ea4f0db10920, >= 6.12.34 < 6.12.75, >= 6.15.3 < 6.16, >= 6.16, >= 6.15.3 < 6.18.14, >= 6.19 < 6.19.4
Fixed versions
6.12.75, 6.18.14, 6.19.4

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
Not available
CVE-2026-46327 — Linux Linux, linux kernel | SECUFOCUS NOW