Bug 2429050 (CVE-2025-71076) - CVE-2025-71076 kernel: drm/xe/oa: Limit num_syncs to prevent oversized allocations
Summary: CVE-2025-71076 kernel: drm/xe/oa: Limit num_syncs to prevent oversized alloca...
Keywords:
Status: NEW
Alias: CVE-2025-71076
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-01-13 16:03 UTC by OSIDB Bzimport
Modified: 2026-02-12 19:19 UTC (History)
0 users

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Description OSIDB Bzimport 2026-01-13 16:03:08 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/xe/oa: Limit num_syncs to prevent oversized allocations

The OA open parameters did not validate num_syncs, allowing
userspace to pass arbitrarily large values, potentially
leading to excessive allocations.

Add check to ensure that num_syncs does not exceed DRM_XE_MAX_SYNCS,
returning -EINVAL when the limit is violated.

v2: use XE_IOCTL_DBG() and drop duplicated check. (Ashutosh)

(cherry picked from commit e057b2d2b8d815df3858a87dffafa2af37e5945b)
Comment 1 Jon Moroney 2026-01-15 03:23:19 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026011326-CVE-2025-71076-19ff@gregkh/T
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