Bug 2516264 (CVE-2026-72327)

Summary: CVE-2026-72327 kernel: drm/v3d: Reject invalid indirect BO handle in indirect CSD setup
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: low    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the Linux kernel's `drm/v3d` component. The `v3d_get_cpu_indirect_csd_params()` function does not properly validate a userspace-supplied indirect buffer object (BO) handle. An attacker, by providing a bogus or stale handle, can cause a NULL pointer dereference. This can lead to a system crash, resulting in a Denial of Service (DoS).
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Description OSIDB Bzimport 2026-08-15 06:03:21 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/v3d: Reject invalid indirect BO handle in indirect CSD setup

v3d_get_cpu_indirect_csd_params() looks up the indirect buffer object
from a userspace-supplied handle but never checks the result. A bogus
or stale handle makes drm_gem_object_lookup() return NULL, which is
then stored in info->indirect and only dereferenced later when the
indirect CSD job runs, turning a userspace mistake into a NULL pointer
dereference in the kernel.

Bail out with -ENOENT as soon as the lookup fails, so the bad handle is
rejected at submission time.
Comment 1 gkamathe 2026-08-17 14:59:53 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026081507-CVE-2026-72327-b469@gregkh/T