Bug 2516227 (CVE-2026-72245)

Summary: CVE-2026-72245 kernel: gpu: host1x: Fix device reference leak in host1x_device_parse_dt() error path
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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Doc Text:
A flaw was found in the Linux kernel's gpu: host1x subsystem. An error handling path in the host1x_device_parse_dt() function, when called from host1x_device_add(), fails to properly release a device reference. This oversight leads to a device reference leak, which could potentially result in resource exhaustion and a Denial of Service (DoS) over an extended period.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-08-15 06:01:31 UTC 
In the Linux kernel, the following vulnerability has been resolved:

gpu: host1x: Fix device reference leak in host1x_device_parse_dt() error path

After device_initialize(), the embedded struct device in struct
host1x_device should be released through the device core with
put_device().

In host1x_device_add(), if host1x_device_parse_dt() fails, the current
error path frees the object directly with kfree(device). That bypasses
the normal device lifetime handling and leaks the reference held on the
embedded struct device.

The issue was identified by a static analysis tool I developed and
confirmed by manual review.

Fix this by using put_device() in the host1x_device_parse_dt() failure
path.
Comment 1 gkamathe 2026-08-17 10:02:05 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026081552-CVE-2026-72245-724a@gregkh/T