CVE-2026-46327

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 v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

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

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

19 Oct 2026, 20:18

Type	Values Removed	Values Added
CWE		CWE-362

Information

Published : 2026-06-09 14:16

Updated : 2026-10-19 20:18

NVD link : CVE-2026-46327

Mitre link : CVE-2026-46327

CVE.ORG link : CVE-2026-46327

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

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However, this function is called without\nholding any locks, so the device may be suspended just after it.\n\nMove the call to dm_suspended_md after dm_get_live_table, so that the\ndevice can't be suspended after the suspended state was tested."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ndm: correcci\u00f3n de la prueba sin bloqueo para dm_suspended_md\n\nLa funci\u00f3n dm_blk_report_zones comprueba si el dispositivo est\u00e1 suspendido con la llamada a 'dm_suspended_md'. Sin embargo, esta funci\u00f3n es llamada sin mantener ning\u00fan bloqueo, por lo que el dispositivo puede ser suspendido justo despu\u00e9s de ella.\n\nMover la llamada a dm_suspended_md despu\u00e9s de dm_get_live_table, para que el dispositivo no pueda ser suspendido despu\u00e9s de que se comprobara el estado de suspensi\u00f3n."}], "lastModified": "2026-10-19T20:18:44.227", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A8DAA245-0057-42FC-8AC1-567AF3D93866", "versionEndExcluding": "6.12.75", "versionStartIncluding": "6.12.34"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BBB52BEE-CB23-4AC5-9EB1-563B3501A7DA", "versionEndExcluding": "6.18.14", "versionStartIncluding": "6.15.3"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "672A3E79-EC03-479D-8503-361DFBDC8092", "versionEndExcluding": "6.19.4", "versionStartIncluding": "6.19"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}