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In the Linux kernel, the following vulnerability has been resolved:
drm/mediatek: Fix potential NULL dereference in mtk_crtc_destroy()
In mtk_crtc_create(), if the call to mbox_request_channel() fails then we set the "mtk_crtc->cmdq_client.chan" pointer to NULL. In that situation, we do not call cmdq_pkt_create().
During the cleanup, we need to check if the "mtk_crtc->cmdq_client.chan" is NULL first before calling cmdq_pkt_destroy(). Calling cmdq_pkt_destroy() is unnecessary if we didn't call cmdq_pkt_create() and it will result in a NULL pointer dereference.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | May 15, 2025 | Nov 19, 2024 |
| Ubuntu | — | Upgrade linux-image-genericUpgrade linux-image-oem-24.04bUpgrade linux-image-lowlatency-64kUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-6.11.0-1005-realtimeUpgrade linux-image-6.11.0-1009-azureUpgrade linux-image-6.11.0-1009-awsUpgrade linux-image-6.11.0-1009-azure-fdeUpgrade linux-image-6.11.0-1011-oracle-64kUpgrade linux-image-6.11.0-1008-raspiUpgrade linux-image-lowlatencyUpgrade linux-image-6.11.0-18-generic-64kUpgrade linux-image-generic-64kUpgrade linux-image-oem-24.04Upgrade linux-image-oracleUpgrade linux-image-6.11.0-1009-gcpUpgrade linux-image-virtualUpgrade linux-image-azureUpgrade linux-image-realtimeUpgrade linux-image-awsUpgrade linux-image-realtime-hwe-24.04Upgrade linux-image-6.11.0-1010-lowlatencyUpgrade linux-image-oem-24.04aUpgrade linux-image-6.11.0-18-genericUpgrade linux-image-6.11.0-1011-oracleUpgrade linux-image-gcpUpgrade linux-image-raspiUpgrade linux-image-oracle-64kUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-6.11.0-1015-oemUpgrade linux-image-azure-fdeUpgrade linux-image-6.11.0-1010-lowlatency-64kUpgrade linux-image-generic-hwe-24.04 | Feb 20, 2025 | Nov 19, 2024 |
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