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 up calling rtlock_lock(), which asserts if current::pi_blocked_on is set, because a task can…
Does this matter?
Lower severity and a low EPSS score (0.13%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.13% probability · 3th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/33bee10644f8fff3b1a0187ad5ad34513e5e8e72Patch
- https://git.kernel.org/stable/c/3a408cae608d9c075dd3a9e5cfc03b3cb0726863Patch
- https://git.kernel.org/stable/c/3f6a3b24ab7b9d51f6f4778254bef0e5847beb55Patch
- https://git.kernel.org/stable/c/5f41161059fd0f1bbf18c90f3180e38cc45a14ebPatch
- https://git.kernel.org/stable/c/8a680d54f1adf3e3aa815578684556716fda6f0cPatch
- https://git.kernel.org/stable/c/a3383df76f0d7a597066df018409eb9e5e698064Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.