In the Linux kernel, the following vulnerability has been resolved:
gpio: shared: fix deadlock on shared proxy's parent removal
Commit 710abda58055 ("gpio: shared: call gpio_chip::of_xlate() if set") used the mutex embedded in struct gpio_shared_entry to protect the offset field which now can be modified after assignment. The critical section however is too wide and introduced a potential deadlock on the removal of the shared GPIO proxy's parent.
Make the critical section shorter - only protect the offset when it's being read.
While at it: mention the fact that the entry lock is now also used to protect against concurrent access to the offset field in the structure's documentation.
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Ubuntu | — | Upgrade linux-image-nvidia-7.0Upgrade linux-image-raspi-realtime-7.0Upgrade linux-image-aws-64kUpgrade linux-image-7.0.0-2016-nvidia-bos-64kUpgrade linux-image-7.0.0-1015-raspiUpgrade linux-image-aws-7.0Upgrade linux-image-nvidia-64k-7.0Upgrade linux-image-nvidia-hwe-26.04Upgrade linux-image-7.0.0-1011-gcpUpgrade linux-image-7.0.0-1015-raspi-realtimeUpgrade linux-image-7.0.0-1009-aws-64kUpgrade linux-image-7.0.0-2016-nvidia-bosUpgrade linux-image-gcp-7.0Upgrade linux-image-7.0.0-1009-awsUpgrade linux-image-7.0.0-1011-gcp-64kUpgrade linux-image-aws-64k-7.0Upgrade linux-image-7.0.0-1016-nvidiaUpgrade linux-image-nvidia-bos-64k-7.0Upgrade linux-image-nvidiaUpgrade linux-image-nvidia-bos-7.0Upgrade linux-image-gcpUpgrade linux-image-awsUpgrade linux-image-gcp-64k-7.0Upgrade linux-image-nvidia-bos-64kUpgrade linux-image-nvidia-64k-hwe-26.04Upgrade linux-image-nvidia-bosUpgrade linux-image-raspi-7.0Upgrade linux-image-raspiUpgrade linux-image-raspi-realtimeUpgrade linux-image-nvidia-64kUpgrade linux-image-gcp-64kUpgrade linux-image-7.0.0-1016-nvidia-64k | Jul 28, 2026 | Jul 28, 2026 |
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