CVE-2025-38703

In the Linux kernel, the following vulnerability has been resolved: drm/xe: Make dma-fences compliant with the safe access rules Xe can free some of the data pointed to by the dma-fences it exports. Most notably the timeline name can get freed if userspace closes the associated submit queue. At the same time the fence could have been exported to a third party (for example a sync_fence fd) which will then cause an use- after-free on subsequent access. To make this safe we need to make the driver compliant with the newly documented dma-fence rules. Driver has to ensure a RCU grace period between signalling a fence and freeing any data pointed to by said fence. For the timeline name we simply make the queue be freed via kfree_rcu and for the shared lock associated with multiple queues we add a RCU grace period before freeing the per GT structure holding the lock.

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/683b0e397dad9f26a42dcacf6f7f545a77ce6c06	Patch
https://git.kernel.org/stable/c/6bd90e700b4285e6a7541e00f969cab0d696adde	Patch
https://git.kernel.org/stable/c/b17fcce70733c211cb5dabf54f4f9491920b1d92	Patch
https://git.kernel.org/stable/c/ba37807d08bae67de6139346a85650cab5f6145a	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

No history.

Information

Published : 2025-09-04 16:15

Updated : 2025-11-24 19:45

NVD link : CVE-2025-38703

Mitre link : CVE-2025-38703

CVE.ORG link : CVE-2025-38703

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-416

Use After Free

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