CVE-2026-34001: Xorg: xwayland: x.org x server: use-after-free vulnerability leads to server crash and potential memory corruption
Red Hat · Red Hat Enterprise Linux 10
Vendor fix available · Affected: Red Hat Enterprise Linux 10 · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 18% of scored CVEs
DescriptionCVE.org
A flaw was found in the X.Org X server. This use-after-free vulnerability occurs in the XSYNC fence triggering logic, specifically within the miSyncTriggerFence() function. An attacker with access to the X11 server can exploit this without user interaction, leading to a server crash and potentially enabling memory corruption. This could result in a denial of service or further compromise of the system.
Affected products20
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Red Hat · Red Hat Enterprise Linux 10Versions not stated
- Red Hat · Red Hat Enterprise Linux 10Versions not stated
- Red Hat · Red Hat Enterprise Linux 10.0 Extended Update SupportVersions not stated
- Red Hat · Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSIONVersions not stated
- Red Hat · Red Hat Enterprise Linux 7 Extended Lifecycle SupportVersions not stated
- Red Hat · Red Hat Enterprise Linux 7 Extended Lifecycle SupportVersions not stated
- Red Hat · Red Hat Enterprise Linux 8Versions not stated
- Red Hat · Red Hat Enterprise Linux 8Versions not stated
- Red Hat · Red Hat Enterprise Linux 8Versions not stated
- Red Hat · Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportVersions not stated
- Red Hat · Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportVersions not stated
- Red Hat · Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnVersions not stated
- Red Hat · Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnVersions not stated
- Red Hat · Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportVersions not stated
- Red Hat · Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportVersions not stated
- Red Hat · Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportVersions not stated
- Red Hat · Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-OnVersions not stated
- Red Hat · Red Hat Enterprise Linux 8.6 Telecommunications Update ServiceVersions not stated
- Red Hat · Red Hat Enterprise Linux 8.6 Telecommunications Update ServiceVersions not stated
- Red Hat · Red Hat Enterprise Linux 8.6 Update Services for SAP SolutionsVersions not stated
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- Red Hat
- Published
- April 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-34001 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.
References
- NVD entrynvd.nist.gov
- CVE recordcve.org
- Weakness CWE-825cwe.mitre.org
- Vendor advisoryaccess.redhat.com
- Vendor advisoryaccess.redhat.com
- Vendor advisoryaccess.redhat.com
- Vendor advisoryaccess.redhat.com
- Vendor advisoryaccess.redhat.com
- Vendor advisoryaccess.redhat.com
- Vendor advisoryaccess.redhat.com
- Vendor advisoryaccess.redhat.com
- Vendor advisoryaccess.redhat.com
- Vendor advisoryaccess.redhat.com
- Vendor advisoryaccess.redhat.com
- Vendor advisoryaccess.redhat.com
26 more references are in the CVE record.