Medium 5.5Published Jul 1, 2026

CVE-2026-53327debugobjects: Do not fill_pool() if pi_blocked_on

Updated under an hour ago (Oct 26, 2026, 9:40 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: Jul 4, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 4bedcc28469a24fe481a8a31b3584e6070457ddb before 8a680d54f1adf3e3aa815578684556716fda6f0c; from 4bedcc28469a24fe481a8a31b3584e6070457ddb before a3383df76f0d7a597066df018409eb9e5e698064; 4bedcc28469a24fe481a8a31b3584e6070457ddb builds before 3f6a3b24ab7b9d51f6f4778254bef0e5847beb55; 4bedcc28469a24fe481a8a31b3584e6070457ddb builds before 3a408cae608d9c075dd3a9e5cfc03b3cb0726863; from 4bedcc28469a24fe481a8a31b3584e6070457ddb before 33bee10644f8fff3b1a0187ad5ad34513e5e8e72; from 4bedcc28469a24fe481a8a31b3584e6070457ddb before 5f41161059fd0f1bbf18c90f3180e38cc45a14eb	CNA record
linux linux_kernel linux:linux_kernel	from 5.15 before 6.1.177; from 6.2 before 6.6.144; from 6.7 before 6.12.95; from 6.13 before 6.18.37; from 6.19 before 7.0.13; 7.1; 7.1; 7.1; and 1 more ranges	NVD

References

References

https://git.kernel.org/stable/c/8a680d54f1adf3e3aa815578684556716fda6f0c	patch
https://git.kernel.org/stable/c/a3383df76f0d7a597066df018409eb9e5e698064	patch
https://git.kernel.org/stable/c/3f6a3b24ab7b9d51f6f4778254bef0e5847beb55	patch
https://git.kernel.org/stable/c/3a408cae608d9c075dd3a9e5cfc03b3cb0726863	patch
https://git.kernel.org/stable/c/33bee10644f8fff3b1a0187ad5ad34513e5e8e72	patch
https://git.kernel.org/stable/c/5f41161059fd0f1bbf18c90f3180e38cc45a14eb	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.