Xorg: xmayland: use-after-free in xpresentnotify structure creation
Published Oct 30, 2025 · Updated Oct 23, 2026
Original summary
Normalized public record · Updated Oct 23, 2026
Xorg: xmayland: use-after-free in xpresentnotify structure creation
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
A flaw was found in the X.Org X server and Xwayland when processing X11 Present extension notifications. Improper error handling during notification creation can leave dangling pointers that lead to a use-after-free condition. This can cause memory corruption or a crash, potentially allowing an attacker to execute arbitrary code or cause a denial of service.
Evidence: public source recordsAffected products
| Affected package, product or range | Fix status |
|---|---|
| Consult the referenced vendor advisory for affected versions. | Consult source advisory |
Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.
Remediation
Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.
- Confirm the affected product and reachable code path exist in your environment.
- Apply the vendor-supported patch or mitigation from the primary advisory.
- Rescan the exact deployed revision and retain verification evidence.
Evidence coverage
- SSVC priority
- MEDIUM
- Confidence
- 10%
- Aliases
- None reported
Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.
Sources and record history
- RHSA-2025:19432 ↗
- RHSA-2025:19433 ↗
- RHSA-2025:19434 ↗
- RHSA-2025:19435 ↗
- RHSA-2025:19489 ↗
- RHSA-2025:19623 ↗
- RHSA-2025:19909 ↗
- RHSA-2025:20958 ↗
- RHSA-2025:20960 ↗
- RHSA-2025:20961 ↗
- RHSA-2025:21035 ↗
- RHSA-2025:22040 ↗
Record history
Published Oct 30, 2025 · Last refreshed Oct 23, 2026