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