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.
総合評価: CVE-2025-40340 は低リスク(8.3/100)。悪用される可能性が高い(EPSS 0.18%、8 パーセンタイル) 推奨対応: 総合リスクは低く緊急対応は不要です。通常の保守サイクルでパッチを適用し、CVSS / EPSS が上昇したら優先度を見直してください。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置(高いほど相対的に深刻)を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ(新 − 旧) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.02% | 0.18% | +0.17% |
| 2 | 2025-12-09 | — | 0.02% | — |
EPSS の全履歴 (全 2 件)
この CVE の CVSS 指標。
この CVE のデータセットに CVSS はありません。
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2025-40340 unimportant priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2025-40340 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2025-40340 |
suse
|
medium | CVE-2025-40340 severity moderate: SUSE including 384 source package names (13.2-9.1:libsystemd0-254.23-1.1, 13.2-9.1:libudev1-254.23-1.1, …), 891 product×package rows across 140 product lines (Container suse/sl-micro/6.0/baremetal-os-container, Container suse/sl-micro/6.0/base-os-container, … (140 product lines)): Fixed 392, Known Not Affected 243, Known Affected 231, First Fixed 25. | https://www.suse.com/security/cve/CVE-2025-40340/ |
ubuntu
|
medium | CVE-2025-40340 medium priority: Ubuntu including 157 source packages (linux, linux-allwinner-5.19, …), 1405 status rows across 9 suites (bionic, focal, jammy, noble, plucky, questing, trusty, upstream, xenial): DNE 1010, ignored 182, needed 113, released 97, not-affected 3. | https://ubuntu.com/security/CVE-2025-40340 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| linux | linux_kernel | >= 6.8, < 6.12.58 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 6.8, < 6.17.8 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 6.8, < 6.18 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |