A vulnerability was found in X.Org. This issue occurs due to a dangling pointer in DeepCopyPointerClasses that can be exploited by ProcXkbSetDeviceInfo() and ProcXkbGetDeviceInfo() to read and write into freed memory. This can lead to local privilege elevation on systems where the X server runs privileged and remote code execution for ssh X forwarding sessions.
総合評価: CVE-2023-0494 は中リスク(50.6/100)。CVSS 深刻度は高。悪用される可能性が高い(EPSS 0.90%、55 パーセンタイル) 推奨対応: 影響資産を整理し、修補計画に組み込んでください。
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 | 0.71% | 0.90% | +0.19% |
| 2 | 2026-04-14 | 0.58% | 0.71% | +0.13% |
| 3 | 2025-11-21 | — | 0.58% | — |
EPSS の全履歴 (全 11 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 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2023-0494: 2 source package rows (xorg-server, xwayland); 14 state rows across 7 repos (3.17-community, 3.18-community, 3.19-community, 3.20-community, 3.21-community, 3.22-community, edge-community); fixed 14, open 0. | https://security.alpinelinux.org/vuln/CVE-2023-0494 |
debian
|
not yet assigned | CVE-2023-0494 not yet assigned priority: Debian including 2 source packages (xorg-server, xwayland), 9 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 9. | https://security-tracker.debian.org/tracker/CVE-2023-0494 |
gentoo
|
high | CVE-2023-0494: 1 GLSA(s) (202305-30), 2 atom(s) (x11-base/xorg-server, x11-base/xwayland); latest impact high. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2023-0494 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2023-0494 |
suse
|
high | — | https://www.suse.com/security/cve/CVE-2023-0494/ |
ubuntu
|
medium | CVE-2023-0494 medium priority: Ubuntu including 8 source packages (xorg-server, xorg-server-hwe-16.04, …), 58 status rows across 8 suites (bionic, focal, jammy, kinetic, lunar, trusty, upstream, xenial): DNE 34, released 12, needs-triage 8, ignored 4. | https://ubuntu.com/security/CVE-2023-0494 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| x.org | x_server | < 21.1.7 | cpe:2.3:a:x.org:x_server:*:*:*:*:*:*:*:* |
| fedoraproject | fedora | 36 | cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:* |
| fedoraproject | fedora | 37 | cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 8.0 | cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 8.1 | cpe:2.3:o:redhat:enterprise_linux:8.1:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 9.0 | cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_aus | 8.4 | cpe:2.3:o:redhat:enterprise_linux_aus:8.4:*:*:*:*:*:*:* |
| redhat | enterprise_linux_aus | 8.6 | cpe:2.3:o:redhat:enterprise_linux_aus:8.6:*:*:*:*:*:*:* |
| redhat | enterprise_linux_desktop | 7.0 | cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_eus | 8.4 | cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:* |
| redhat | enterprise_linux_eus | 8.6 | cpe:2.3:o:redhat:enterprise_linux_eus:8.6:*:*:*:*:*:*:* |
| redhat | enterprise_linux_eus | 9.0 | cpe:2.3:o:redhat:enterprise_linux_eus:9.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_ibm_z_systems | 7.0 | cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_ibm_z_systems | 8.0 | cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:8.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_ibm_z_systems_eus | 8.4 | cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.4:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_ibm_z_systems_eus | 8.6 | cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.6:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_big_endian | 7.0 | cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_little_endian | 7.0 | cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_little_endian | 8.0 | cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_little_endian | 9.0 | cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:9.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_little_endian_eus | 8.4 | cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.4:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_little_endian_eus | 8.6 | cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.6:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_scientific_computing | 7.0 | cpe:2.3:o:redhat:enterprise_linux_for_scientific_computing:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server | 7.0 | cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_aus | 8.2 | cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions | 8.1 | cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.1:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions | 8.2 | cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.2:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions | 8.4 | cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.4:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions | 8.6 | cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.6:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions | 9.0 | cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:9.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_tus | 8.2 | cpe:2.3:o:redhat:enterprise_linux_server_tus:8.2:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_tus | 8.4 | cpe:2.3:o:redhat:enterprise_linux_server_tus:8.4:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_tus | 8.6 | cpe:2.3:o:redhat:enterprise_linux_server_tus:8.6:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_update_services_for_sap_solutions | 8.2 | cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.2:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_workstation | 7.0 | cpe:2.3:o:redhat:enterprise_linux_server_workstation:7.0:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=2165995 | Issue Tracking Third Party Advisory |
| https://gitlab.freedesktop.org/xorg/xserver/-/commit/0ba6d8c37071131a49790243cdac55392ecf71ec | Patch |
| https://lists.x.org/archives/xorg-announce/2023-February/003320.html | Mailing List Vendor Advisory |
| https://security.gentoo.org/glsa/202305-30 |