GHSA-c83q-p66f-qr9p · 深刻度: high — An out-of-bounds write flaw was found in the X.Org X server and Xwayland in DRIGetBuffers...
An out-of-bounds write flaw was found in the X.Org X server and Xwayland in DRIGetBuffers/DRIGetBuffersWithFormat. A client that requests multiple DRI2BufferBackLeft attachments and one DRI2BufferFrontLeft can trigger an out-of-bounds heap write. This may be used to crash the server, or for privilege escalation if the X server runs as root.
総合評価: CVE-2026-50264 は低リスク(32.5/100)。CVSS 深刻度は高。悪用される可能性が高い(EPSS 0.14%、4 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 | 2026-06-23 | 0.18% | 0.14% | -0.04% |
| 2 | 2026-06-15 | 0.01% | 0.18% | +0.17% |
| 3 | 2026-06-05 | — | 0.01% | — |
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 |
|---|---|---|---|---|---|---|
| 7.8 | 3.1 | HIGH |
|
1.8 | 5.9 | [email protected] |
| 7.8 | 3.1 | HIGH |
|
1.8 | 5.9 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c |
GHSA-c83q-p66f-qr9p · 深刻度: high — An out-of-bounds write flaw was found in the X.Org X server and Xwayland in DRIGetBuffers...
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2026-50264 not yet assigned priority: Debian including 2 source packages (xorg-server, xwayland), 9 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5, open 4. | https://security-tracker.debian.org/tracker/CVE-2026-50264 |
suse
|
high | CVE-2026-50264 severity important: SUSE including 2 source package names (xwayland, xwayland-devel), 6 product×package rows across 4 product lines (SUSE Linux Enterprise Server 16.0, SUSE Linux Enterprise Server for SAP applications 16.0, SUSE Linux Enterprise Workstation Extension 15 SP7, openSUSE Leap 16.0): Known Not Affected 6. | https://www.suse.com/security/cve/CVE-2026-50264/ |
ubuntu
|
medium | CVE-2026-50264 medium priority: Ubuntu including 7 source packages (xorg, xorg-hwe-16.04, …), 46 status rows across 9 suites (bionic, focal, jammy, noble, questing, resolute, trusty, upstream, xenial): needs-triage 17, DNE 16, not-affected 12, released 1. | https://ubuntu.com/security/CVE-2026-50264 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| x.org | x_server | < 21.1.23 | cpe:2.3:a:x.org:x_server:*:*:*:*:*:*:*:* |
| x.org | xwayland | < 24.1.12 | cpe:2.3:a:x.org:xwayland:*:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 7.0 | cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 8.0 | cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 9.0 | cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 10.0 | cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:* |