Medium severity5.5NVD Advisory· Published Jul 1, 2026· Updated Jul 23, 2026
CVE-2026-53327
CVE-2026-53327
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.
Affected products
7cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 5 more
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=5.15,<6.1.177
- cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:*
- (no CPE)
Patches
Vulnerability mechanics
References
6- git.kernel.org/stable/c/33bee10644f8fff3b1a0187ad5ad34513e5e8e72nvdPatch
- git.kernel.org/stable/c/3a408cae608d9c075dd3a9e5cfc03b3cb0726863nvdPatch
- git.kernel.org/stable/c/3f6a3b24ab7b9d51f6f4778254bef0e5847beb55nvdPatch
- git.kernel.org/stable/c/5f41161059fd0f1bbf18c90f3180e38cc45a14ebnvdPatch
- git.kernel.org/stable/c/8a680d54f1adf3e3aa815578684556716fda6f0cnvdPatch
- git.kernel.org/stable/c/a3383df76f0d7a597066df018409eb9e5e698064nvdPatch
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