CVE-2026-53327
Medium
Description
In the Linux kernel, the following vulnerability has been resolved: debugobjects: Do not fill_pool() if pi_blocked_on On RT enabled kernels, fill_pool() ends up calling rtlock_lock(), which asserts if current::pi_blocked_on is set, because a task can obviously only block on one lock as otherwise the priority inheritenace chain gets corrupted. Prevent this by expanding the conditional to take current::pi_blocked_on into account.
SeverityMedium
CVSS5.5
Exploit probability—
Product
Linux Kernel
PublishedJul 1, 2026
First seenJul 1, 2026
How to fix
Update
- linux linux_kernel6.1.177, 6.6.144, 6.12.95, 6.18.37, 7.0.13 or later
Patches
- git.kernel.org/stable/c/33bee10644f8fff3b1a0187ad5ad34513e5e8e72
- git.kernel.org/stable/c/3a408cae608d9c075dd3a9e5cfc03b3cb0726863
- git.kernel.org/stable/c/3f6a3b24ab7b9d51f6f4778254bef0e5847beb55
- git.kernel.org/stable/c/5f41161059fd0f1bbf18c90f3180e38cc45a14eb
- git.kernel.org/stable/c/8a680d54f1adf3e3aa815578684556716fda6f0c
- git.kernel.org/stable/c/a3383df76f0d7a597066df018409eb9e5e698064
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.15 ≤ v < 6.1.177, 6.2 ≤ v < 6.6.144, 6.7 ≤ v < 6.12.95, 6.13 ≤ v < 6.18.37, 6.19 ≤ v < 7.0.13, 7.1 | 6.1.177, 6.6.144, 6.12.95, 6.18.37, 7.0.13 |
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