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-ibmUpgrade linux-image-6.8.0-1009-awsUpgrade linux-image-ibm-classicUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-oem-24.04aUpgrade linux-image-awsUpgrade linux-image-kvmUpgrade linux-image-virtualUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-6.8.0-1006-oemUpgrade linux-image-6.8.0-1004-gkeUpgrade linux-image-6.8.0-1006-oracleUpgrade linux-image-6.8.0-35-lowlatency-64kUpgrade linux-image-oem-24.04Upgrade linux-image-oracle-64kUpgrade linux-image-gcpUpgrade linux-image-generic-64kUpgrade linux-image-6.8.0-1008-azure-fdeUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-6.8.0-1005-raspiUpgrade linux-image-lowlatencyUpgrade linux-image-lowlatency-64kUpgrade linux-image-gkeUpgrade linux-image-6.8.0-1008-azureUpgrade linux-image-6.8.0-1006-ibmUpgrade linux-image-azureUpgrade linux-image-genericUpgrade linux-image-6.8.0-35-lowlatencyUpgrade linux-image-oracleUpgrade linux-image-6.8.0-35-generic-64kUpgrade linux-image-6.8.0-35-genericUpgrade linux-image-6.8.0-1008-gcpUpgrade linux-image-azure-fdeUpgrade linux-image-raspiUpgrade linux-image-generic-lpaeUpgrade linux-image-6.8.0-1006-oracle-64k | Jul 1, 2024 | May 17, 2024 |
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