cbcvebase.
CVE-2025-38703
published 2025-09-04

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…

PriorityP339high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.15%
5.1th percentile
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.

Affected

22 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.16.3-1 (forky)linux 6.16.3-1 (forky)
linuxlinux
linuxlinux>= dd08ebf6c3525a7ea2186e636df064ea47281987 < b17fcce70733c211cb5dabf54f4f9491920b1d92b17fcce70733c211cb5dabf54f4f9491920b1d92
linuxlinux>= dd08ebf6c3525a7ea2186e636df064ea47281987 < ba37807d08bae67de6139346a85650cab5f6145aba37807d08bae67de6139346a85650cab5f6145a
linuxlinux>= dd08ebf6c3525a7ea2186e636df064ea47281987 < 683b0e397dad9f26a42dcacf6f7f545a77ce6c06683b0e397dad9f26a42dcacf6f7f545a77ce6c06
linuxlinux>= dd08ebf6c3525a7ea2186e636df064ea47281987 < 6bd90e700b4285e6a7541e00f969cab0d696adde6bd90e700b4285e6a7541e00f969cab0d696adde
linuxlinux_kernel>= 0 < 6.12.43-16.12.43-1
linuxlinux_kernel>= 0 < 6.16.3-16.16.3-1
linuxlinux_kernel>= 0 < 6.8.0-100.1006.8.0-100.100
linuxlinux_kernel>= 6.13 < 6.15.116.15.11
linuxlinux_kernel>= 6.16 < 6.16.26.16.2
linuxlinux_kernel>= 6.8 < 6.12.436.12.43
msrcazl3_kernel_6.6.96.2-1_on_azure_linux_3.0
ubuntulinux-aws
ubuntulinux-aws-6.8
ubuntulinux-gkeop
ubuntulinux-nvidia
ubuntulinux-nvidia-6.8
ubuntulinux-oracle
ubuntulinux-oracle-6.8
ubuntulinux-raspi-realtime
ubuntulinux-realtime

CVSS provenance

nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8LOW
vendor_msrc7.8HIGH
vendor_redhat7.8HIGH
vendor_ubuntu3.2LOW
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