CVE-2025-38703 json
drm/xe: Make dma-fences compliant with the safe access rules
published 2025-09-04 14 mo ago modified 2026-10-19 20 d ago also EUVD-2025-26766
- cvss
- 7.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 7%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- Linux Linux 6.12.43, 6.15.11, 6.16.2, 6.17
- linux Debian 13 6.12.43-1
- linux Debian 14 6.16.3-1
debian advisories DEBIAN-CVE-2025-38703
- linux Ubuntu 24.04 LTS 6.8.0-100.100
- linux-aws Ubuntu 24.04 LTS 6.8.0-1046.49
- linux-gcp Ubuntu 24.04 LTS 6.8.0-1047.50
- linux-gke Ubuntu 24.04 LTS 6.8.0-1043.48
- linux-ibm Ubuntu 24.04 LTS 6.8.0-1044.44
- linux-azure Ubuntu 24.04 LTS 6.8.0-1046.52
- linux-gkeop Ubuntu 24.04 LTS 6.8.0-1030.33
- linux-raspi Ubuntu 24.04 LTS 6.8.0-1047.51
ubuntu advisories UBUNTU-CVE-2025-38703
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- kernel RHEL 10.1 6.12.0-124.43.1.el10_1
- rv RHEL 10.1 6.12.0-124.43.1.el10_1
- perf RHEL 10.1 6.12.0-124.43.1.el10_1
- rtla RHEL 10.1 6.12.0-124.43.1.el10_1
- libperf RHEL 10.1 6.12.0-124.43.1.el10_1
- kernel-rt RHEL 10.1 6.12.0-124.43.1.el10_1
- kernel-64k RHEL 10.1 6.12.0-124.43.1.el10_1
- kernel-core RHEL 10.1 6.12.0-124.43.1.el10_1
red hat advisories RHSA-2026:4111RHSA-2026:4012RHSA-2026:4011RHSA-2026:0793
- kernel-rt Linux Micro 6.2 6.12.0-160000.6.1
- kernel-64kb SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 6.12.0-160000.6.1
- kernel-source SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 6.12.0-160000.6.1
- kernel-default SLES 16.0, SLE High Availability Extension 16.0, Linux Micro 6.2 +1 more 6.12.0-160000.6.1
- kernel-default-base SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 6.12.0-160000.6.1.160000.2.4
- kernel-syms SLES 16.0, Linux Micro Extras 6.2, SLES for SAP applications 16.0 6.12.0-160000.6.1
- kernel-obs-qa SLES for SAP applications 16.0, SLES 16.0 6.12.0-160000.6.1
- kernel-kvmsmall SLES for SAP applications 16.0, SLES 16.0 6.12.0-160000.6.1
suse advisories SUSE-SU-2025:21074-1SUSE-SU-2025:21139-1SUSE-SU-2026:20560-1SUSE-SU-2025:21179-1SUSE-SU-2025:3725-1SUSE-SU-2025:03633-1
- kernel-rt openSUSE Leap 16.0 6.12.0-160000.6.1
- dtb-aarch64 openSUSE Leap 16.0 6.12.0-160000.6.1
- kernel-64kb openSUSE Leap 16.0 6.12.0-160000.6.1
- kernel-syms openSUSE Leap 16.0 6.12.0-160000.6.1
- kernel-obs-qa openSUSE Leap 16.0 6.12.0-160000.6.1
- kernel-source openSUSE Leap 16.0 6.12.0-160000.6.1
- kernel-default openSUSE Leap 16.0 6.12.0-160000.6.1
- kernel-kvmsmall openSUSE Leap 16.0 6.12.0-160000.6.1
opensuse advisories openSUSE-SU-2025:20081-1
- kernel-abi-stablelists AlmaLinux 10 6.12.0-124.43.1.el10_1
- kernel AlmaLinux 9 5.14.0-611.24.1.el9_7
- rv AlmaLinux 9 5.14.0-611.24.1.el9_7
- perf AlmaLinux 9 5.14.0-611.24.1.el9_7
- rtla AlmaLinux 9 5.14.0-611.24.1.el9_7
- libperf AlmaLinux 9 5.14.0-611.24.1.el9_7
- kernel-rt AlmaLinux 9 5.14.0-611.24.1.el9_7
- kernel-64k AlmaLinux 9 5.14.0-611.24.1.el9_7
almalinux advisories ALSA-2026:4012ALSA-2026:0793
- kernel Rocky Linux 9 5.14.0-611.24.1.el9_7
rocky linux advisories RLSA-2026:0793
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2025-38703 updated cvss 7.0
kernel: drm/xe: Make dma-fences compliant with the safe access rules
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Red Hat Enterprise Linux 9 kernel-rt, kernel-rt-kvm, kernel-rt-core, kernel-rt-modules, kernel-rt-debug-kvm, kernel-rt-debug-core, +12 moreaffected: no fix available
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Red Hat CodeReady Linux Builder EUS (v.9.6) libperf 5.14.0-570.96.1.el9_6, kernel-debuginfo-common-s390x 5.14.0-570.96.1.el9_6, kernel-debuginfo-common-x86_64 5.14.0-570.96.1.el9_6, kernel-debuginfo-common-aarch64 5.14.0-570.96.1.el9_6, kernel-debuginfo-common-ppc64le 5.14.0-570.96.1.el9_6fixed: vendor fix RHSA-2026:4011
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Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-611.24.1.el9_7, perf 5.14.0-611.24.1.el9_7, rtla 5.14.0-611.24.1.el9_7, python3-perf 5.14.0-611.24.1.el9_7, kernel-devel-matched 5.14.0-611.24.1.el9_7, kernel-64k-devel-matched 5.14.0-611.24.1.el9_7, +7 morefixed: vendor fix RHSA-2026:0793
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Red Hat Enterprise Linux AppStream (v. 10) rv 6.12.0-124.43.1.el10_1, perf 6.12.0-124.43.1.el10_1, rtla 6.12.0-124.43.1.el10_1, python3-perf 6.12.0-124.43.1.el10_1, kernel-devel-matched 6.12.0-124.43.1.el10_1, kernel-64k-devel-matched 6.12.0-124.43.1.el10_1, +7 morefixed: vendor fix RHSA-2026:4012
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Red Hat Enterprise Linux AppStream EUS (v. 10.0) rv 6.12.0-55.63.1.el10_0, perf 6.12.0-55.63.1.el10_0, rtla 6.12.0-55.63.1.el10_0, python3-perf 6.12.0-55.63.1.el10_0, kernel-devel-matched 6.12.0-55.63.1.el10_0, kernel-64k-devel-matched 6.12.0-55.63.1.el10_0, +7 morefixed: vendor fix RHSA-2026:4111
-
Red Hat Enterprise Linux AppStream EUS (v.9.6) rv 5.14.0-570.96.1.el9_6, perf 5.14.0-570.96.1.el9_6, rtla 5.14.0-570.96.1.el9_6, python3-perf 5.14.0-570.96.1.el9_6, kernel-devel-matched 5.14.0-570.96.1.el9_6, kernel-64k-devel-matched 5.14.0-570.96.1.el9_6, +7 morefixed: vendor fix RHSA-2026:4011
-
Red Hat Enterprise Linux BaseOS (v. 9) kernel 5.14.0-611.24.1.el9_7, kernel-64k 5.14.0-611.24.1.el9_7, kernel-core 5.14.0-611.24.1.el9_7, kernel-tools 5.14.0-611.24.1.el9_7, kernel-modules 5.14.0-611.24.1.el9_7, kernel-64k-core 5.14.0-611.24.1.el9_7, +27 morefixed: vendor fix RHSA-2026:0793
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Red Hat Enterprise Linux BaseOS (v. 10) kernel 6.12.0-124.43.1.el10_1, kernel-64k 6.12.0-124.43.1.el10_1, kernel-core 6.12.0-124.43.1.el10_1, kernel-tools 6.12.0-124.43.1.el10_1, kernel-modules 6.12.0-124.43.1.el10_1, kernel-64k-core 6.12.0-124.43.1.el10_1, +28 morefixed: vendor fix RHSA-2026:4012
show 14 moreshow fewer
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Red Hat Enterprise Linux BaseOS EUS (v. 10.0) kernel 6.12.0-55.63.1.el10_0, kernel-64k 6.12.0-55.63.1.el10_0, kernel-core 6.12.0-55.63.1.el10_0, kernel-tools 6.12.0-55.63.1.el10_0, kernel-modules 6.12.0-55.63.1.el10_0, kernel-64k-core 6.12.0-55.63.1.el10_0, +27 morefixed: vendor fix RHSA-2026:4111
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Red Hat Enterprise Linux BaseOS EUS (v.9.6) kernel 5.14.0-570.96.1.el9_6, kernel-64k 5.14.0-570.96.1.el9_6, kernel-core 5.14.0-570.96.1.el9_6, kernel-tools 5.14.0-570.96.1.el9_6, kernel-modules 5.14.0-570.96.1.el9_6, kernel-64k-core 5.14.0-570.96.1.el9_6, +27 morefixed: vendor fix RHSA-2026:4011
-
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) libperf 5.14.0-611.24.1.el9_7, kernel-debuginfo-common-s390x 5.14.0-611.24.1.el9_7, kernel-debuginfo-common-x86_64 5.14.0-611.24.1.el9_7, kernel-debuginfo-common-aarch64 5.14.0-611.24.1.el9_7, kernel-debuginfo-common-ppc64le 5.14.0-611.24.1.el9_7fixed: vendor fix RHSA-2026:0793
-
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) libperf 6.12.0-124.43.1.el10_1, kernel-debuginfo-common-s390x 6.12.0-124.43.1.el10_1, kernel-debuginfo-common-x86_64 6.12.0-124.43.1.el10_1, kernel-debuginfo-common-aarch64 6.12.0-124.43.1.el10_1, kernel-debuginfo-common-ppc64le 6.12.0-124.43.1.el10_1fixed: vendor fix RHSA-2026:4012
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Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) libperf 6.12.0-55.63.1.el10_0, kernel-debuginfo-common-s390x 6.12.0-55.63.1.el10_0, kernel-debuginfo-common-x86_64 6.12.0-55.63.1.el10_0, kernel-debuginfo-common-aarch64 6.12.0-55.63.1.el10_0, kernel-debuginfo-common-ppc64le 6.12.0-55.63.1.el10_0fixed: vendor fix RHSA-2026:4111
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Red Hat Enterprise Linux Real Time (v. 9) kernel-rt 5.14.0-611.24.1.el9_7, kernel-rt-64k 5.14.0-611.24.1.el9_7, kernel-rt-core 5.14.0-611.24.1.el9_7, kernel-rt-modules 5.14.0-611.24.1.el9_7, kernel-rt-64k-core 5.14.0-611.24.1.el9_7, kernel-rt-debug-core 5.14.0-611.24.1.el9_7, +14 morefixed: vendor fix RHSA-2026:0793
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Red Hat Enterprise Linux Real Time (v. 10) kernel-rt 6.12.0-124.43.1.el10_1, kernel-rt-64k 6.12.0-124.43.1.el10_1, kernel-rt-core 6.12.0-124.43.1.el10_1, kernel-rt-modules 6.12.0-124.43.1.el10_1, kernel-rt-64k-core 6.12.0-124.43.1.el10_1, kernel-rt-debug-core 6.12.0-124.43.1.el10_1, +14 morefixed: vendor fix RHSA-2026:4012
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Red Hat Enterprise Linux Real Time EUS (v. 10.0) kernel-rt 6.12.0-55.63.1.el10_0, kernel-rt-64k 6.12.0-55.63.1.el10_0, kernel-rt-core 6.12.0-55.63.1.el10_0, kernel-rt-modules 6.12.0-55.63.1.el10_0, kernel-rt-64k-core 6.12.0-55.63.1.el10_0, kernel-rt-debug-core 6.12.0-55.63.1.el10_0, +14 morefixed: vendor fix RHSA-2026:4111
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Red Hat Enterprise Linux Real Time EUS (v.9.6) kernel-rt 5.14.0-570.96.1.el9_6, kernel-rt-64k 5.14.0-570.96.1.el9_6, kernel-rt-core 5.14.0-570.96.1.el9_6, kernel-rt-modules 5.14.0-570.96.1.el9_6, kernel-rt-64k-core 5.14.0-570.96.1.el9_6, kernel-rt-debug-core 5.14.0-570.96.1.el9_6, +14 morefixed: vendor fix RHSA-2026:4011
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Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt 5.14.0-611.24.1.el9_7, kernel-rt-core 5.14.0-611.24.1.el9_7, kernel-rt-modules 5.14.0-611.24.1.el9_7, kernel-rt-debug-core 5.14.0-611.24.1.el9_7, kernel-rt-modules-core 5.14.0-611.24.1.el9_7, kernel-rt-debug-modules 5.14.0-611.24.1.el9_7, +4 morefixed: vendor fix RHSA-2026:0793
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Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt 6.12.0-124.43.1.el10_1, kernel-rt-core 6.12.0-124.43.1.el10_1, kernel-rt-modules 6.12.0-124.43.1.el10_1, kernel-rt-debug-core 6.12.0-124.43.1.el10_1, kernel-rt-modules-core 6.12.0-124.43.1.el10_1, kernel-rt-debug-modules 6.12.0-124.43.1.el10_1, +4 morefixed: vendor fix RHSA-2026:4012
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Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0) kernel-rt 6.12.0-55.63.1.el10_0, kernel-rt-kvm 6.12.0-55.63.1.el10_0, kernel-rt-core 6.12.0-55.63.1.el10_0, kernel-rt-modules 6.12.0-55.63.1.el10_0, kernel-rt-debug-kvm 6.12.0-55.63.1.el10_0, kernel-rt-debug-core 6.12.0-55.63.1.el10_0, +6 morefixed: vendor fix RHSA-2026:4111
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Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6) kernel-rt 5.14.0-570.96.1.el9_6, kernel-rt-kvm 5.14.0-570.96.1.el9_6, kernel-rt-core 5.14.0-570.96.1.el9_6, kernel-rt-modules 5.14.0-570.96.1.el9_6, kernel-rt-debug-kvm 5.14.0-570.96.1.el9_6, kernel-rt-debug-core 5.14.0-570.96.1.el9_6, +6 morefixed: vendor fix RHSA-2026:4011
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Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 morenot affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
Exploit prediction
0.18% chance of exploitation in the next 30 days, higher than 7% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Linux Linux
Classification
- Weakness
-
- CWE-416 Use After Free
- Technology feeds
References
Sources
- CVE List CVE-2025-38703
- NVD CVE-2025-38703
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.