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Review reviewHigh

CVE-2025-38703

Linux Linux, linux kernel

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 betw...

CVSS
7.8
EPSS
0.17%
6.14% percentile
CISA KEV
Not listed
Published
2025.09.05
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.17%
Technical severityCVSS 7.8

Vulnerability overview

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 betw...

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= dd08ebf6c3525a7ea2186e636df064ea47281987 < b17fcce70733c211cb5dabf54f4f9491920b1d92, >= dd08ebf6c3525a7ea2186e636df064ea47281987 < ba37807d08bae67de6139346a85650cab5f6145a, >= dd08ebf6c3525a7ea2186e636df064ea47281987 < 683b0e397dad9f26a42dcacf6f7f545a77ce6c06, >= dd08ebf6c3525a7ea2186e636df064ea47281987 < 6bd90e700b4285e6a7541e00f969cab0d696adde, >= 6.8, >= 6.8 < 6.12.43, >= 6.13 < 6.15.11, >= 6.16 < 6.16.2
Fixed versions
6.12.43, 6.15.11, 6.16.2

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-416
CVE-2025-38703 — Linux Linux, linux kernel | SECUFOCUS NOW