GHSA-jqx2-5f2v-644h · 深刻度： high — In the Linux kernel, the following vulnerability has been resolved: iommu/amd: move wait_on_sem(...
In the Linux kernel, the following vulnerability has been resolved: iommu/amd: move wait_on_sem() out of spinlock With iommu.strict=1, the existing completion wait path can cause soft lockups under stressed environment, as wait_on_sem() busy-waits under the spinlock with interrupts disabled. Move the completion wait in iommu_completion_wait() out of the spinlock. wait_on_sem() only polls the hardware-updated cmd_sem and does not require iommu->lock, so holding the lock during the busy wait unnecessarily increases contention and extends the time with interrupts disabled.
総合評価: CVE-2026-43253 は低リスク（39.3/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 0.34%、26 パーセンタイル） 推奨対応: 悪用情報と EPSS の推移を監視し、必要に応じて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 | 0.05% | 0.34% | +0.29% |
| 2 | 2026-05-12 | 0.02% | 0.05% | +0.03% |
| 3 | 2026-05-07 | — | 0.02% | — |
EPSS の全履歴 （全 3 件）
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
GHSA-jqx2-5f2v-644h · 深刻度： high — In the Linux kernel, the following vulnerability has been resolved: iommu/amd: move wait_on_sem(...
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2026-43253 not yet assigned priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 3, open 2. | https://security-tracker.debian.org/tracker/CVE-2026-43253 |
redhat
|
low | — | https://access.redhat.com/security/cve/CVE-2026-43253 |
suse
|
medium | CVE-2026-43253 severity moderate: SUSE including 5 source package names (kernel-default, kernel-devel, kernel-macros, kernel-source, kernel-source-vanilla), 14 product×package rows across 3 product lines (SUSE Linux Enterprise Server 16.0, SUSE Linux Enterprise Server for SAP applications 16.0, SUSE Linux Micro 6.2): Known Not Affected 14. | https://www.suse.com/security/cve/CVE-2026-43253/ |
ubuntu
|
medium | CVE-2026-43253 medium priority: Ubuntu including 161 source packages (linux, linux-allwinner-5.19, …), 1449 status rows across 9 suites (bionic, focal, jammy, noble, questing, resolute, trusty, upstream, xenial): DNE 1048, ignored 173, needed 129, released 83, not-affected 10, needs-triage 5, pending 1. | https://ubuntu.com/security/CVE-2026-43253 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| linux | linux_kernel | >= 4.9, < 6.6.128 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 6.7, < 6.12.75 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 6.13, < 6.18.16 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 6.19, < 6.19.6 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |