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CVE-2026-46327

dm: fix unlocked test for dm_suspended_md

HIGH
7.8
CVSS Score
Published: June 9, 2026 at 12:25 PM UTC
Updated: October 19, 2026 at 08:18 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
6.12.34 ≤ v < 6.12.756.15.3 ≤ v < 6.18.146.19 ≤ v < 6.19.437f53a2c60d03743e0eacf7a0c01c279776fef4e6.12.346.15.36.16d19bc1b4dd5f322980b1f05f79b2ea4f0db10920f9c1bdf24615303d48a2d0fd629c88f3189563aa
Vendor states this is fixed in 175ac0a6115400278d3900f5a04a58b17b3f6cd0 (fixed)
Vendor states this is fixed in 24c405fdbe215c45e57bba672cc42859038491ee (fixed)
Vendor states this is fixed in 7a3385e97af2b6f485fef11e82d8c29adee4be93 (fixed)
Vendor states this is fixed in d809a36692ee1394cac85ce6ba7cf8ea58da5812 (fixed)
Vendor states this is fixed in 6.12.75 (unaffected)
Vendor states this is fixed in 6.16 (unaffected)
Vendor states this is fixed in 6.18.14 (unaffected)
Vendor states this is fixed in 6.19.4 (unaffected)
Vendor states this is fixed in 7.0 (unaffected)

References (4)

Patch
Source: cverecord
https://git.kernel.org/stable/c/175ac0a6115400278d3900f5a04a58b17b3f6cd0
Patch
Source: cverecord
https://git.kernel.org/stable/c/7a3385e97af2b6f485fef11e82d8c29adee4be93
Patch
Source: cverecord
https://git.kernel.org/stable/c/d809a36692ee1394cac85ce6ba7cf8ea58da5812
Patch
Source: cverecord
https://git.kernel.org/stable/c/24c405fdbe215c45e57bba672cc42859038491ee

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHLinux
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfoCWE-362

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