CVE-2026-53327 Details
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.
A vulnerability in the Linux kernel's handling of debug objects in real-time (RT) enabled environments has been addressed. The issue arose because the 'fill_pool()' function, when called on RT enabled kernels, would invoke 'rtlock_lock()'. This invocation asserts if the current task is blocked on a priority inheritance lock, as a task can only block on one lock at a time without disrupting the priority inheritance chain. The vulnerability has been fixed by modifying the condition under which 'fill_pool()' operates to consider whether the current task is blocked on a priority inheritance lock.
Users can upgrade to the latest version of the Linux kernel to address this vulnerability. The patched version can be downloaded from the Linux kernel stable Git repository.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/33bee10644f8fff3b1a0187ad5ad34513e5e8e72 | kernel.org | Patch |
| https://git.kernel.org/stable/c/3a408cae608d9c075dd3a9e5cfc03b3cb0726863 | kernel.org | Patch |
| https://git.kernel.org/stable/c/3f6a3b24ab7b9d51f6f4778254bef0e5847beb55 | kernel.org | Patch |
| https://git.kernel.org/stable/c/5f41161059fd0f1bbf18c90f3180e38cc45a14eb | kernel.org | Patch |
| https://git.kernel.org/stable/c/8a680d54f1adf3e3aa815578684556716fda6f0c | kernel.org | Patch |
| https://git.kernel.org/stable/c/a3383df76f0d7a597066df018409eb9e5e698064 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 5.15, < 6.1.177 >= 6.2, < 6.6.144 >= 6.7, < 6.12.95 >= 6.13, < 6.18.37 >= 6.19, < 7.0.13 7.1 rc1 7.1 rc2 7.1 rc3 7.1 rc4 |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 23, 2026 | Initial Analysis | [email protected] |
| Jul 4, 2026 | CVE Modified | kernel.org |
| Jul 1, 2026 | New CVE Received | kernel.org |