In the Linux kernel, the following vulnerability has been resolved:
debugfs: fix wait/cancellation handling during remove
Ben Greear further reports deadlocks during concurrent debugfs remove while files are being accessed, even though the code in question now uses debugfs cancellations. Turns out that despite all the review on the locking, we missed completely that the logic is wrong: if the refcount hits zero we can finish (and need not wait for the completion), but if it doesn't we have to trigger all the cancellations. As written, we can _never_ get into the loop triggering the cancellations. Fix this, and explain it better while at it.
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jul 27, 2026 | Jul 27, 2026 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | May 17, 2024 |
| Ubuntu | — | Upgrade linux-image-6.8.0-35-generic-64kUpgrade linux-image-azureUpgrade linux-image-oracleUpgrade linux-image-6.8.0-1006-oracle-64kUpgrade linux-image-lowlatencyUpgrade linux-image-generic-lpaeUpgrade linux-image-6.8.0-35-lowlatencyUpgrade linux-image-6.8.0-1008-azureUpgrade linux-image-gkeUpgrade linux-image-azure-fdeUpgrade linux-image-genericUpgrade linux-image-6.8.0-1008-gcpUpgrade linux-image-raspiUpgrade linux-image-lowlatency-64kUpgrade linux-image-6.8.0-1005-raspiUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-6.8.0-1006-ibmUpgrade linux-image-6.8.0-35-genericUpgrade linux-image-oem-24.04aUpgrade linux-image-oracle-64kUpgrade linux-image-awsUpgrade linux-image-virtualUpgrade linux-image-6.8.0-1006-oracleUpgrade linux-image-oem-24.04Upgrade linux-image-generic-64kUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-gcpUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-6.8.0-35-lowlatency-64kUpgrade linux-image-6.8.0-1009-awsUpgrade linux-image-kvmUpgrade linux-image-ibm-classicUpgrade linux-image-ibmUpgrade linux-image-6.8.0-1008-azure-fdeUpgrade linux-image-6.8.0-1006-oemUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-6.8.0-1004-gke | Jul 1, 2024 | May 17, 2024 |
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