CVE-2026-46093

In the Linux kernel, the following vulnerability has been resolved: mm/vmalloc: take vmap_purge_lock in shrinker decay_va_pool_node() can be invoked concurrently from two paths: __purge_vmap_area_lazy() when pools are being purged, and the shrinker via vmap_node_shrink_scan(). However, decay_va_pool_node() is not safe to run concurrently, and the shrinker path currently lacks serialization, leading to races and possible leaks. Protect decay_va_pool_node() by taking vmap_purge_lock in the shrinker path to ensure serialization with purge users.

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/12f2341b4c235d5593a433abac201c1c6725787f	Patch
https://git.kernel.org/stable/c/687ccdf582169cd680aeaf24cc953807c4cd4345	Patch
https://git.kernel.org/stable/c/c15ff206ba78820bf2873d0c668a882e99f4b631
https://git.kernel.org/stable/c/ec05f51f1e65bce95528543eb73fda56fd201d94	Patch

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2026-05-27 14:17

Updated : 2026-07-18 16:17

NVD link : CVE-2026-46093

Mitre link : CVE-2026-46093

CVE.ORG link : CVE-2026-46093

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo

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