The PCI backend driver in Xen, when running on an x86 system and using Linux 3.1.x through 4.3.x as the driver domain, allows local guest administrators to hit BUG conditions and cause a denial of service (NULL pointer dereference and host OS crash) by leveraging a system with access to a passed-through MSI or MSI-X capable physical PCI device and a crafted sequence of XEN_PCI_OP_* operations, aka "Linux pciback missing sanity checks."
総合評価: CVE-2015-8551 は低リスク（36.8/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 0.45%、36 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 | 0.09% | 0.45% | +0.36% |
| 2 | 2025-03-30 | 0.39% | 0.09% | -0.30% |
| 3 | 2025-03-29 | — | 0.39% | — |
EPSS の全履歴 （全 5 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 |
|---|---|---|---|---|---|---|
| 6.0 | 3.1 | MEDIUM |
|
1.5 | 4.0 | [email protected] |
| 4.7 | 2.0 | MEDIUM |
|
3.4 | 6.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2015-8551 not yet assigned 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-2015-8551 |
gentoo
|
normal | CVE-2015-8551: 1 GLSA(s) (201604-03), 4 atom(s) (app-emulation/pvgrub, app-emulation/xen, app-emulation/xen-pvgrub, app-emulation/xen-tools); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2015-8551 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2015-8551 |
suse
|
medium | CVE-2015-8551 severity moderate: SUSE including 130 source package names (kernel-bigsmp-3.0.101-0.47.79.1, kernel-bigsmp-base-3.0.101-0.47.79.1, …), 324 product×package rows across 41 product lines (SUSE Linux Enterprise Desktop 11 SP4, SUSE Linux Enterprise Desktop 12, … (41 product lines)): Fixed 245, Known Not Affected 79. | https://www.suse.com/security/cve/CVE-2015-8551/ |
ubuntu
|
medium | CVE-2015-8551 medium priority: Ubuntu including 99 source packages (linux, linux-armadaxp, …), 850 status rows across 14 suites (artful, bionic, focal, jammy, noble, plucky, precise, trusty, upstream, vivid, wily, xenial, yakkety, zesty): DNE 566, not-affected 138, released 109, ignored 37. | https://ubuntu.com/security/CVE-2015-8551 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| linux | linux_kernel | >= 3.1, <= 3.1.10 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 4.3.0, <= 4.3.6 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| debian | debian_linux | 7.0 | cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* |
| debian | debian_linux | 8.0 | cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* |
| opensuse | opensuse | 13.1 | cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:* |
| suse | linux_enterprise_desktop | 11 | cpe:2.3:o:suse:linux_enterprise_desktop:11:sp4:*:*:*:*:*:* |
| suse | linux_enterprise_desktop | 12 | cpe:2.3:o:suse:linux_enterprise_desktop:12:sp1:*:*:*:*:*:* |
| suse | linux_enterprise_real_time_extension | 11 | cpe:2.3:o:suse:linux_enterprise_real_time_extension:11:sp4:*:*:*:*:*:* |
| suse | linux_enterprise_real_time_extension | 12 | cpe:2.3:o:suse:linux_enterprise_real_time_extension:12:sp1:*:*:*:*:*:* |
| suse | linux_enterprise_server | 11 | cpe:2.3:o:suse:linux_enterprise_server:11:-:*:*:*:*:*:* |
| suse | linux_enterprise_server | 11 | cpe:2.3:o:suse:linux_enterprise_server:11:sp4:*:*:*:*:*:* |
| suse | linux_enterprise_server | 12 | cpe:2.3:o:suse:linux_enterprise_server:12:sp1:*:*:*:*:*:* |
| suse | linux_enterprise_software_development_kit | 11 | cpe:2.3:o:suse:linux_enterprise_software_development_kit:11:sp4:*:*:*:*:*:* |
| suse | linux_enterprise_software_development_kit | 12 | cpe:2.3:o:suse:linux_enterprise_software_development_kit:12:sp1:*:*:*:*:*:* |
| suse | linux_enterprise_workstation_extension | 12 | cpe:2.3:o:suse:linux_enterprise_workstation_extension:12:sp1:*:*:*:*:*:* |