CVE-2026-50261— X.Org X server和Xwayland 资源管理错误漏洞
一分钟漏洞结论
影响对象
Red Hat Red Hat Enterprise Linux 10
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
X.Org X Server是X.Org基金会的一款X Window系统显示服务器。Xwayland是Xwayland开源的一个通信协议，规定了显示服务器与其客户机之间的通信方式。 X.Org X server和Xwayland存在资源管理错误漏洞，该漏洞源于SyncChangeCounter()中的释放后重用问题，可能导致客户端在更改计数器时通过第二个客户端连接销毁计数器触发释放后重用，造成服务器崩溃或权限提升。
可能的 ATT&CK 技术 1 AI
T1068 · Exploitation for Privilege Escalation影响版本矩阵 37
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | 0:24.1.9-4.el10_2.2< * |
unaffected |
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support | 0:24.1.5-6.el10_0.1< * |
unaffected |
| Red Hat | Red Hat Enterprise Linux 6 | 全部 |
unknown |
| Red Hat | Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION | 0:1.1.0-25.el6_10.18< * |
unaffected |
| Red Hat | Red Hat Enterprise Linux 7 Extended Lifecycle Support | 0:1.20.4-35.el7_9< * |
unaffected |
0:1.8.0-36.el7_9.5< * |
unaffected | ||
| Red Hat | Red Hat Enterprise Linux 8 | 0:21.1.3-20.el8_10.2< * |
unaffected |
0:1.20.11-28.el8_10.2< * |
unaffected | ||
0:1.15.0-10.el8_10< * |
unaffected | ||
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | 0:1.20.10-5.el8_4< * |
unaffected |
0:1.11.0-8.el8_4.16< * |
unaffected | ||
| Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On | 0:1.20.10-5.el8_4< * |
unaffected |
0:1.11.0-8.el8_4.16< * |
unaffected | ||
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | 0:1.20.11-8.el8_6< * |
unaffected |
0:21.1.3-2.el8_6.7< * |
unaffected | ||
0:1.12.0-6.el8_6.18< * |
unaffected | ||
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On | 0:1.20.11-8.el8_6< * |
unaffected |
0:21.1.3-2.el8_6.7< * |
unaffected | ||
0:1.12.0-6.el8_6.18< * |
unaffected | ||
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service | 0:1.20.11-19.el8_8< * |
unaffected |
0:21.1.3-13.el8_8.1< * |
unaffected | ||
0:1.12.0-15.el8_8.18< * |
unaffected | ||
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions | 0:1.20.11-19.el8_8< * |
unaffected |
0:21.1.3-13.el8_8.1< * |
unaffected | ||
0:1.12.0-15.el8_8.18< * |
unaffected | ||
| Red Hat | Red Hat Enterprise Linux 9 | 0:24.1.9-4.el9_8.2< * |
unaffected |
0:1.20.11-34.el9_8.2< * |
unaffected | ||
0:1.15.0-7.el9_8.2< * |
unaffected | ||
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | 0:1.20.11-21.el9_2< * |
unaffected |
0:21.1.3-10.el9_2.1< * |
unaffected | ||
0:1.12.0-14.el9_2.15< * |
unaffected | ||
| Red Hat | Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions | 0:1.20.11-29.el9_4< * |
unaffected |
0:22.1.9-8.el9_4.1< * |
unaffected | ||
0:1.13.1-8.el9_4.10< * |
unaffected | ||
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support | 0:1.20.11-34.el9_6< * |
unaffected |
0:23.2.7-6.el9_6.1< * |
unaffected | ||
0:1.14.1-11.el9_6< * |
unaffected |
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一、 漏洞 CVE-2026-50261 基础信息
漏洞信息
对漏洞内容有疑问？看看神龙的深度分析是否有帮助！
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Vulnerability Title
Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in syncchangecounter()
来源: CVE Program / CVE List V5
Vulnerability Description
A use-after-free flaw was found in the X.Org X server and Xwayland in SyncChangeCounter(). A client that sets up multiple SyncCounters can trigger a use-after-free when destroying those counters via a second client connection while changing those counters. This may be used to crash the server, or for privilege escalation if the X server runs as root.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
释放后使用
来源: CVE Program / CVE List V5
Vulnerability Title
X.Org X server和Xwayland 资源管理错误漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
X.Org X Server是X.Org基金会的一款X Window系统显示服务器。Xwayland是Xwayland开源的一个通信协议，规定了显示服务器与其客户机之间的通信方式。 X.Org X server和Xwayland存在资源管理错误漏洞，该漏洞源于SyncChangeCounter()中的释放后重用问题，可能导致客户端在更改计数器时通过第二个客户端连接销毁计数器触发释放后重用，造成服务器崩溃或权限提升。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | 0:24.1.9-4.el10_2.2 ~ * |
cpe:/o:redhat:enterprise_linux:10.2
|
|
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support | 0:24.1.5-6.el10_0.1 ~ * |
cpe:/o:redhat:enterprise_linux_eus:10.0
|
|
| Red Hat | Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION | 0:1.1.0-25.el6_10.18 ~ * |
cpe:/o:redhat:rhel_els:6
|
|
| Red Hat | Red Hat Enterprise Linux 7 Extended Lifecycle Support | 0:1.20.4-35.el7_9 ~ * |
cpe:/o:redhat:rhel_els:7
|
|
| Red Hat | Red Hat Enterprise Linux 7 Extended Lifecycle Support | 0:1.8.0-36.el7_9.5 ~ * |
cpe:/o:redhat:rhel_els:7
|
|
| Red Hat | Red Hat Enterprise Linux 8 | 0:21.1.3-20.el8_10.2 ~ * |
cpe:/a:redhat:enterprise_linux:8::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 8 | 0:1.20.11-28.el8_10.2 ~ * |
cpe:/a:redhat:enterprise_linux:8::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 8 | 0:1.15.0-10.el8_10 ~ * |
cpe:/a:redhat:enterprise_linux:8::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | 0:1.20.10-5.el8_4 ~ * |
cpe:/a:redhat:rhel_aus:8.4::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | 0:1.11.0-8.el8_4.16 ~ * |
cpe:/a:redhat:rhel_aus:8.4::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On | 0:1.20.10-5.el8_4 ~ * |
cpe:/a:redhat:rhel_aus:8.4::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On | 0:1.11.0-8.el8_4.16 ~ * |
cpe:/a:redhat:rhel_aus:8.4::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | 0:1.20.11-8.el8_6 ~ * |
cpe:/a:redhat:rhel_aus:8.6::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | 0:21.1.3-2.el8_6.7 ~ * |
cpe:/a:redhat:rhel_aus:8.6::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | 0:1.12.0-6.el8_6.18 ~ * |
cpe:/a:redhat:rhel_aus:8.6::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On | 0:1.20.11-8.el8_6 ~ * |
cpe:/a:redhat:rhel_aus:8.6::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On | 0:21.1.3-2.el8_6.7 ~ * |
cpe:/a:redhat:rhel_aus:8.6::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On | 0:1.12.0-6.el8_6.18 ~ * |
cpe:/a:redhat:rhel_aus:8.6::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service | 0:1.20.11-19.el8_8 ~ * |
cpe:/a:redhat:rhel_e4s:8.8::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service | 0:21.1.3-13.el8_8.1 ~ * |
cpe:/a:redhat:rhel_e4s:8.8::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service | 0:1.12.0-15.el8_8.18 ~ * |
cpe:/a:redhat:rhel_e4s:8.8::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions | 0:1.20.11-19.el8_8 ~ * |
cpe:/a:redhat:rhel_e4s:8.8::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions | 0:21.1.3-13.el8_8.1 ~ * |
cpe:/a:redhat:rhel_e4s:8.8::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions | 0:1.12.0-15.el8_8.18 ~ * |
cpe:/a:redhat:rhel_e4s:8.8::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 9 | 0:24.1.9-4.el9_8.2 ~ * |
cpe:/a:redhat:enterprise_linux:9::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 9 | 0:1.20.11-34.el9_8.2 ~ * |
cpe:/a:redhat:enterprise_linux:9::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 9 | 0:1.15.0-7.el9_8.2 ~ * |
cpe:/a:redhat:enterprise_linux:9::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | 0:1.20.11-21.el9_2 ~ * |
cpe:/a:redhat:rhel_e4s:9.2::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | 0:21.1.3-10.el9_2.1 ~ * |
cpe:/a:redhat:rhel_e4s:9.2::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | 0:1.12.0-14.el9_2.15 ~ * |
cpe:/a:redhat:rhel_e4s:9.2::appstream
|
|
二、漏洞 CVE-2026-50261 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
AI 生成 POC
高级
未找到公开 POC。
登录以生成 AI POC三、漏洞 CVE-2026-50261 的情报信息
请登录查看更多情报信息。
CVE-2026-50261 补丁与修复 (1)
CVE-2026-50261 厂商安全公告 (26)
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🔗 RHSA-2026:46392 - Security Advisory - Red Hat Customer Portal 查看完整文章 vendor-advisory x_refsource_REDHAT
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🔗 RHSA-2026:36087 - Security Advisory - Red Hat Customer Portal 查看完整文章 vendor-advisory x_refsource_REDHAT
-
🔗 RHSA-2026:46382 - Security Advisory - Red Hat Customer Portal 查看完整文章 vendor-advisory x_refsource_REDHAT
-
🔗 RHSA-2026:46456 - Security Advisory - Red Hat Customer Portal 查看完整文章 vendor-advisory x_refsource_REDHAT
-
🔗 RHSA-2026:36086 - Security Advisory - Red Hat Customer Portal 查看完整文章 vendor-advisory x_refsource_REDHAT
-
🔗 RHSA-2026:26562 - Security Advisory - Red Hat Customer Portal 查看完整文章 vendor-advisory x_refsource_REDHAT
-
🔗 RHSA-2026:28923 - Security Advisory - Red Hat Customer Portal 查看完整文章 vendor-advisory x_refsource_REDHAT
-
🔗 RHSA-2026:46385 - Security Advisory - Red Hat Customer Portal 查看完整文章 vendor-advisory x_refsource_REDHAT
-
🔗 RHSA-2026:36634 - Security Advisory - Red Hat Customer Portal 查看完整文章 vendor-advisory x_refsource_REDHAT
-
🔗 RHSA-2026:46460 - Security Advisory - Red Hat Customer Portal 查看完整文章 vendor-advisory x_refsource_REDHAT
-
🔗 RHSA-2026:36633 - Security Advisory - Red Hat Customer Portal 查看完整文章 vendor-advisory x_refsource_REDHAT
-
🔗 RHSA-2026:36791 - Security Advisory - Red Hat Customer Portal 查看完整文章 vendor-advisory x_refsource_REDHAT
-
🔗 RHSA-2026:26566 - Security Advisory - Red Hat Customer Portal 查看完整文章 vendor-advisory x_refsource_REDHAT
-
🔗 RHSA-2026:36632 - Security Advisory - Red Hat Customer Portal 查看完整文章 vendor-advisory x_refsource_REDHAT
-
🔗 RHSA-2026:38502 - Security Advisory - Red Hat Customer Portal 查看完整文章 vendor-advisory x_refsource_REDHAT
-
🔗 RHSA-2026:36083 - Security Advisory - Red Hat Customer Portal 查看完整文章 vendor-advisory x_refsource_REDHAT
-
🔗 RHSA-2026:36798 - Security Advisory - Red Hat Customer Portal 查看完整文章 vendor-advisory x_refsource_REDHAT
-
🔗 RHSA-2026:36085 - Security Advisory - Red Hat Customer Portal 查看完整文章 vendor-advisory x_refsource_REDHAT
-
🔗 RHSA-2026:36792 - Security Advisory - Red Hat Customer Portal 查看完整文章 vendor-advisory x_refsource_REDHAT
-
🔗 RHSA-2026:46473 - Security Advisory - Red Hat Customer Portal 查看完整文章 vendor-advisory x_refsource_REDHAT
-
🔗 RHSA-2026:36768 - Security Advisory - Red Hat Customer Portal 查看完整文章 vendor-advisory x_refsource_REDHAT
-
-
🔗 RHSA-2026:46377 - Security Advisory - Red Hat Customer Portal 查看完整文章 vendor-advisory x_refsource_REDHAT
-
🔗 RHSA-2026:38810 - Security Advisory - Red Hat Customer Portal 查看完整文章 vendor-advisory x_refsource_REDHAT
CVE-2026-50261 邮件列表归档 (1)
CVE-2026-50261 其他参考 (4)
同批安全公告 · Red Hat · 2026-06-05 · 共 11 条
| CVE-2026-11332 | 7.8 HIGH | Ansible 参数注入漏洞 |
| CVE-2026-50256 | 7.8 HIGH | X.Org X server和Xwayland 安全漏洞 |
| CVE-2026-50257 | 7.8 HIGH | X.Org X server和Xwayland 资源管理错误漏洞 |
| CVE-2026-50259 | 7.8 HIGH | X.Org X server和Xwayland 安全漏洞 |
| CVE-2026-50258 | 7.8 HIGH | X.Org X server和Xwayland 安全漏洞 |
| CVE-2026-50260 | 7.8 HIGH | X.Org X server和Xwayland 资源管理错误漏洞 |
| CVE-2026-50264 | 7.8 HIGH | X.Org X server和Xwayland 缓冲区错误漏洞 |
| CVE-2026-50262 | 5.5 MEDIUM | X.Org X server和Xwayland 缓冲区错误漏洞 |
| CVE-2026-50263 | 5.5 MEDIUM | X.Org X server和Xwayland 资源管理错误漏洞 |
| CVE-2026-9088 | 2.7 LOW | Keycloak 安全漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2026-50261
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