CVE-2026-46327 Details
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.
A vulnerability exists in the Linux kernel's device mapper (DM) component, specifically within the zone reporting function. The issue arises because the function 'dm_blk_report_zones' checks if a device is suspended using the 'dm_suspended_md' call, but does so without holding any locks. This oversight allows the device to be suspended immediately after the check is performed. The vulnerability affects the Linux kernel stable tree.
The vulnerability has been addressed by modifying the 'dm_blk_report_zones' function to move the suspension check after the device's live table is retrieved, ensuring that the device cannot be suspended prematurely. Users should upgrade to the latest version of the Linux kernel stable tree where this fix has been applied.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/175ac0a6115400278d3900f5a04a58b17b3f6cd0 | kernel.org | Patch |
| https://git.kernel.org/stable/c/24c405fdbe215c45e57bba672cc42859038491ee | kernel.org | Patch |
| https://git.kernel.org/stable/c/7a3385e97af2b6f485fef11e82d8c29adee4be93 | kernel.org | Patch |
| https://git.kernel.org/stable/c/d809a36692ee1394cac85ce6ba7cf8ea58da5812 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 6.12.34, < 6.12.75 >= 6.15.3, < 6.18.14 >= 6.19, < 6.19.4 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 23, 2026 | CVE Translated | [email protected] |
| Jul 8, 2026 | Initial Analysis | [email protected] |
| Jun 17, 2026 | CVE Modified | kernel.org |
| Jun 14, 2026 | CVE Modified | kernel.org |
| Jun 9, 2026 | New CVE Received | kernel.org |