CVE-2026-53327

debugobjects: Do not fill_pool() if pi_blocked_on

State: Published
Severity: Not scored
Published: Jul 1, 2026
Updated: Jul 4, 2026
Reserved: Jun 9, 2026

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	4bedcc28469a24fe481a8a31b3584e6070457ddb to before 8a680d54f1adf3e3aa815578684556716fda6f0cAffected 4bedcc28469a24fe481a8a31b3584e6070457ddb to before a3383df76f0d7a597066df018409eb9e5e698064Affected 4bedcc28469a24fe481a8a31b3584e6070457ddb to before 3f6a3b24ab7b9d51f6f4778254bef0e5847beb55Affected 4bedcc28469a24fe481a8a31b3584e6070457ddb to before 3a408cae608d9c075dd3a9e5cfc03b3cb0726863Affected 4bedcc28469a24fe481a8a31b3584e6070457ddb to before 33bee10644f8fff3b1a0187ad5ad34513e5e8e72Affected 4bedcc28469a24fe481a8a31b3584e6070457ddb to before 5f41161059fd0f1bbf18c90f3180e38cc45a14ebAffected
LinuxLinux	5.15Affected before 5.15Not affected 6.1.177 through 6.1.Not affected 6.6.144 through 6.6.Not affected 6.12.95 through 6.12.Not affected 6.18.37 through 6.18.Not affected 7.0.13 through 7.0.*Not affected 7.1 and laterNot affected

Product

Versions

LinuxLinux

4bedcc28469a24fe481a8a31b3584e6070457ddb to before 8a680d54f1adf3e3aa815578684556716fda6f0cAffected
4bedcc28469a24fe481a8a31b3584e6070457ddb to before a3383df76f0d7a597066df018409eb9e5e698064Affected
4bedcc28469a24fe481a8a31b3584e6070457ddb to before 3f6a3b24ab7b9d51f6f4778254bef0e5847beb55Affected
4bedcc28469a24fe481a8a31b3584e6070457ddb to before 3a408cae608d9c075dd3a9e5cfc03b3cb0726863Affected
4bedcc28469a24fe481a8a31b3584e6070457ddb to before 33bee10644f8fff3b1a0187ad5ad34513e5e8e72Affected
4bedcc28469a24fe481a8a31b3584e6070457ddb to before 5f41161059fd0f1bbf18c90f3180e38cc45a14ebAffected

LinuxLinux

5.15Affected
before 5.15Not affected
6.1.177 through 6.1.*Not affected
6.6.144 through 6.6.*Not affected
6.12.95 through 6.12.*Not affected
6.18.37 through 6.18.*Not affected
7.0.13 through 7.0.*Not affected
7.1 and laterNot affected

References

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