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medium5.5

CVE-2026-53327

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 u…

Impact

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

VendorProductAffected versions
LinuxLinux 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
Version 7.1

References