CVE-2025-40340: drm/xe: Fix oops in xe_gem_fault when running core_hotunplug test.

Deferred
AliasesUBUNTU-CVE-2025-40340DEBIAN-CVE-2025-40340
Published 09-12-2025Last modified 11-05-2026

Vulnerability summary

CVE-2025-40340 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 12.4% of scored vulnerabilities.

Priority
Insufficient evidence

No CVSS vector published; no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
Not scored
010
No CVSS score recorded
EPSS score
0.22%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 13 · Related 13
OPENSUSE-SU-2026:20145-1SUSE-SU-2026:0278-1SUSE-SU-2026:0281-1SUSE-SU-2026:0315-1SUSE-SU-2026:20207-1SUSE-SU-2026:20220-1

Timeline

  1. 09-12-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: drm/xe: Fix oops in xe_gem_fault when running core_hotunplug test. I saw an oops in xe_gem_fault when running the xe-fast-feedback testlist against the realtime kernel without debug options enabled. The panic happens after core_hotunplug unbind-rebind finishes. Presumably what happens is that a process mmaps, unlocks because of the FAULT_FLAG_RETRY_NOWAIT logic, has no process memory left, causing ttm_bo_vm_dummy_page() to return VM_FAULT_NOPAGE, since there was nothing left to populate, and then oopses in "mem_type_is_vram(tbo->resource->mem_type)" because tbo->resource is NULL. It's convoluted, but fits the data and explains the oops after the test exits.

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.22%

Chance of exploitation in the next 30 days

Percentile

12%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.22% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: not stated in public data.

Ubuntu156 products
  • linuxAll versions (No fix recorded) | < 6.17.0-14.14
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 6.17.0-1007.7
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linux< 6.12.63-1 | < 6.17.8-1
Linux1 product
  • linux≥ dd08ebf6c3525a7ea2186e636df064ea47281987, < 99428bd6123d5676209dfb1d7a8f176cc830b665 | ≥ dd08ebf6c3525a7ea2186e636df064ea47281987, < 29a3064f9c5a908aaf0b39cd6ed30374db11840d | ≥ dd08ebf6c3525a7ea2186e636df064ea47281987, < 1cda3c755bb7770be07d75949bb0f45fb88651f6 | 6.8

3 vendors · 158 products

References

12 links
Show all 12 references