Bug 2400740 (CVE-2022-50440) - CVE-2022-50440 kernel: Linux kernel: Denial of Service in vmwgfx due to invalid DMA surface copies
Summary: CVE-2022-50440 kernel: Linux kernel: Denial of Service in vmwgfx due to inval...
Keywords:
Status: NEW
Alias: CVE-2022-50440
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-10-01 12:04 UTC by OSIDB Bzimport
Modified: 2026-01-14 08:05 UTC (History)
0 users

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Description OSIDB Bzimport 2025-10-01 12:04:44 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/vmwgfx: Validate the box size for the snooped cursor

Invalid userspace dma surface copies could potentially overflow
the memcpy from the surface to the snooped image leading to crashes.
To fix it the dimensions of the copybox have to be validated
against the expected size of the snooped cursor.
Comment 1 Alexander B 2025-12-23 14:32:52 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025100101-CVE-2022-50440-1afd@gregkh/T
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