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In the Linux kernel, the following vulnerability has been resolved:
drm/radeon: Remove calls to drm_put_dev()
Since the allocation of the drivers main structure was changed to devm_drm_dev_alloc() drm_put_dev()'ing to trigger it to be free'd should be done by devres.
However, drm_put_dev() is still in the probe error and device remove paths. When the driver fails to probe warnings like the following are shown because devres is trying to drm_put_dev() after the driver already did it.
[ 5.642230] radeon 0000:01:05.0: probe with driver radeon failed with error -22 [ 5.649605] ------------[ cut here ]------------ [ 5.649607] refcount_t: underflow; use-after-free. [ 5.649620] WARNING: CPU: 0 PID: 357 at lib/refcount.c:28 refcount_warn_saturate+0xbe/0x110
(cherry picked from commit 3eb8c0b4c091da0a623ade0d3ee7aa4a93df1ea4)
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jul 23, 2026 | Jul 23, 2026 |
| Oracle_linux | — | Upgrade kernel-uek | Jan 15, 2026 | Dec 16, 2025 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Dec 16, 2025 |
| Ubuntu | — | Upgrade linux-image-6.17.0-1006-realtimeUpgrade linux-image-6.17.0-1007-aws-64kUpgrade linux-image-6.17.0-1008-raspiUpgrade linux-image-6.17.0-1007-gcpUpgrade linux-image-gcpUpgrade linux-image-azure-6.17Upgrade linux-image-gcp-6.17Upgrade linux-image-oracle-6.17Upgrade linux-image-6.17.0-1007-awsUpgrade linux-image-generic-6.17Upgrade linux-image-6.17.0-14-generic-64kUpgrade linux-image-realtime-6.17Upgrade linux-image-6.17.0-1008-azureUpgrade linux-image-raspi-6.17Upgrade linux-image-oem-6.17Upgrade linux-image-6.17.0-1011-oemUpgrade linux-image-oracle-64kUpgrade linux-image-6.17.0-1007-oracleUpgrade linux-image-virtualUpgrade linux-image-virtual-6.17Upgrade linux-image-awsUpgrade linux-image-aws-64kUpgrade linux-image-6.17.0-14-genericUpgrade linux-image-generic-64k-6.17Upgrade linux-image-azureUpgrade linux-image-aws-64k-6.17Upgrade linux-image-oracleUpgrade linux-image-aws-6.17Upgrade linux-image-6.17.0-1007-gcp-64kUpgrade linux-image-oracle-64k-6.17Upgrade linux-image-generic-64kUpgrade linux-image-realtimeUpgrade linux-image-gcp-64kUpgrade linux-image-raspiUpgrade linux-image-6.17.0-1007-oracle-64kUpgrade linux-image-genericUpgrade linux-image-gcp-64k-6.17 | Feb 13, 2026 | Feb 12, 2026 |
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