CVE-2026-72245: gpu: host1x: Fix device reference leak in host1x_device_parse_dt() error path
In the Linux kernel, the following vulnerability has been resolved:
gpu: host1x: Fix device reference leak in host1xdeviceparsedt() error path
After deviceinitialize(), the embedded struct device in struct host1xdevice should be released through the device core with putdevice().
In host1xdeviceadd(), if host1xdeviceparsedt() 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 putdevice() in the host1xdeviceparsedt() failure path.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
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ubuntu/linux-fipsto a version that resolves this vulnerability.Fixed in 6.8.0-147.147+fips1 - Upgrade
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ubuntu/linux-gcp-fipsto a version that resolves this vulnerability.Fixed in 6.8.0-1071.79+fips1 - Upgrade
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ubuntu/linuxto a version that resolves this vulnerability.Fixed in 7.0.0-38.38 - Upgrade
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ubuntu/linux-awsto a version that resolves this vulnerability.Fixed in 7.0.0-1014.14 - Upgrade
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ubuntu/linux-azureto a version that resolves this vulnerability.Fixed in 7.0.0-1017.17 - Upgrade
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ubuntu/linux-azure-fdeto a version that resolves this vulnerability.Fixed in 7.0.0-1016.16 - Upgrade
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ubuntu/linux-gcpto a version that resolves this vulnerability.Fixed in 7.0.0-1014.14 - Upgrade
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ubuntu/linux-gketo a version that resolves this vulnerability.Fixed in 7.0.0-1008.9 - Upgrade
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ubuntu/linux-ibmto a version that resolves this vulnerability.Fixed in 7.0.0-1015.15 - Upgrade
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ubuntu/linux-oracleto a version that resolves this vulnerability.Fixed in 7.0.0-1013.13 - Upgrade
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ubuntu/linux-riscvto a version that resolves this vulnerability.Fixed in 7.0.0-38.38.1 - Compensating control
In the host1x_device_add() failure path when host1x_device_parse_dt() fails, release the initialized embedded struct device through the device core by calling put_device(device) instead of freeing it directly with kfree(device).
Event History
Frequently Asked Questions
What is CVE-2026-72245?
CVE-2026-72245 is a vulnerability in the Linux kernel related to a device reference leak in the host1x_device_parse_dt() error path.
What is the severity of CVE-2026-72245?
The severity of CVE-2026-72245 is rated as 6, indicating a medium risk associated with this vulnerability.
How do I fix CVE-2026-72245?
To fix CVE-2026-72245, ensure that the latest patches or updates for the Linux kernel that address this vulnerability are applied.
Which systems are affected by CVE-2026-72245?
CVE-2026-72245 affects systems running vulnerable versions of the Linux kernel that utilize the host1x device framework.
What are the implications of CVE-2026-72245?
The implications of CVE-2026-72245 include potential stability issues or resource leaks in systems using affected Linux kernel versions.