CVE-2026-50264— Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: out-of-bounds heap write in dri2 drigetbuffers/drigetbufferswithformat
Possible ATT&CK Techniques 3AI
T1203 · Exploitation for Client Execution T1068 · Exploitation for Privilege Escalation T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 37
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| 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 | any | affected |
any | unknown | ||
| 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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I. Basic Information for CVE-2026-50264
Vulnerability Information
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Vulnerability Title
Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: out-of-bounds heap write in dri2 drigetbuffers/drigetbufferswithformat
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: 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
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5
Vulnerability Title
X.Org X server和Xwayland 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
X.Org是X.Org基金会的一个开放源代码的自由软件。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 存在缓冲区错误漏洞，该漏洞源于DRIGetBuffers/DRIGetBuffersWithFormat中的越界写入问题，可能导致请求多个DRI2BufferBackLeft附件和一个DRI2BufferFrontLeft的客户端触发堆越界写入，造成服务器崩溃或权限提升。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| 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 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 | |
| Red Hat | Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions | 0:1.20.11-29.el9_4 ~ * | cpe:/a:redhat:rhel_e4s:9.4::appstream | |
| Red Hat | Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions | 0:22.1.9-8.el9_4.1 ~ * | cpe:/a:redhat:rhel_e4s:9.4::appstream | |
| Red Hat | Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions | 0:1.13.1-8.el9_4.10 ~ * | cpe:/a:redhat:rhel_e4s:9.4::appstream | |
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support | 0:1.20.11-34.el9_6 ~ * | cpe:/a:redhat:rhel_eus:9.6::appstream | |
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support | 0:23.2.7-6.el9_6.1 ~ * | cpe:/a:redhat:rhel_eus:9.6::appstream | |
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support | 0:1.14.1-11.el9_6 ~ * | cpe:/a:redhat:rhel_eus:9.6::appstream | |
| Red Hat | Red Hat Enterprise Linux 6 | - | cpe:/o:redhat:enterprise_linux:6 | |
| Red Hat | Red Hat Enterprise Linux 6 | - | cpe:/o:redhat:enterprise_linux:6 |
II. Public POCs for CVE-2026-50264
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-50264
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Patches & Fixes for CVE-2026-50264 (1)
Vendor Advisories for CVE-2026-50264 (25)
- 🔗 RHSA-2026:26562 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisoryx_refsource_REDHAT
- 🔗 RHSA-2026:36633 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisoryx_refsource_REDHAT
- 🔗 RHSA-2026:46460 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisoryx_refsource_REDHAT
- 🔗 RHSA-2026:46385 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisoryx_refsource_REDHAT
- 🔗 RHSA-2026:28923 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisoryx_refsource_REDHAT
- 🔗 RHSA-2026:26566 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisoryx_refsource_REDHAT
- 🔗 RHSA-2026:46456 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisoryx_refsource_REDHAT
- 🔗 RHSA-2026:46392 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisoryx_refsource_REDHAT
- 🔗 RHSA-2026:36087 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisoryx_refsource_REDHAT
- 🔗 RHSA-2026:46382 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisoryx_refsource_REDHAT
- 🔗 RHSA-2026:36634 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisoryx_refsource_REDHAT
- 🔗 RHSA-2026:36086 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisoryx_refsource_REDHAT
- 🔗 RHSA-2026:36632 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisoryx_refsource_REDHAT
- 🔗 RHSA-2026:38502 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisoryx_refsource_REDHAT
- 🔗 RHSA-2026:36083 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisoryx_refsource_REDHAT
- 🔗 RHSA-2026:36798 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisoryx_refsource_REDHAT
- 🔗 RHSA-2026:36085 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisoryx_refsource_REDHAT
- 🔗 RHSA-2026:36792 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisoryx_refsource_REDHAT
- 🔗 RHSA-2026:46473 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisoryx_refsource_REDHAT
- 🔗 RHSA-2026:36768 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisoryx_refsource_REDHAT
- 🔗 RHSA-2026:46377 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisoryx_refsource_REDHAT
- 🔗 RHSA-2026:38810 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisoryx_refsource_REDHAT
- 🔗 RHSA-2026:36791 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisoryx_refsource_REDHAT
Mailing List Discussions for CVE-2026-50264 (1)
Other References for CVE-2026-50264 (4)
Same Patch Batch · Red Hat · 2026-06-05 · 11 CVEs total
| CVE-2026-11332 | 7.8 HIGH | Ansible-core: argument injection in ansible-galaxy role install leads to arbitrary code ex |
| CVE-2026-50256 | 7.8 HIGH | Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: stack buffer overflow in font |
| CVE-2026-50257 | 7.8 HIGH | Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in misyncdestro |
| CVE-2026-50259 | 7.8 HIGH | Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: stack buffer overflow in xkb s |
| CVE-2026-50258 | 7.8 HIGH | Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: stack buffer overflow in xkb k |
| CVE-2026-50260 | 7.8 HIGH | Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in freecounter( |
| CVE-2026-50261 | 7.8 HIGH | Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in syncchangeco |
| CVE-2026-50262 | 5.5 MEDIUM | Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: out-of-bounds read/write in gl |
| CVE-2026-50263 | 5.5 MEDIUM | Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free information dis |
| CVE-2026-9088 | 2.7 LOW | Keycloak: keycloak: information disclosure due to user profile permission bypass |
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V. Comments for CVE-2026-50264
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