CVE-2022-50382

low-risk

Published 2025-09-18

In the Linux kernel, the following vulnerability has been resolved: padata: Always leave BHs disabled when running ->parallel() A deadlock can happen when an overloaded system runs ->parallel() in the context of the current task: padata_do_parallel ->parallel() pcrypt_aead_enc/dec padata_do_serial spin_lock(&reorder->lock) // BHs still enabled <interrupt> ... __do_softirq ... padata_do_serial spin_lock(&reorder->lock) It's a bug for BHs to be on in _do_serial as Steffen points out, so ensure they're off in the "current task" case like they are in padata_parallel_worker to avoid this situation.

Do I need to act?

0.01% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 5.5/10 Medium

LOCAL / LOW complexity

Affected Products (1)

Linux Kernel

Affected Vendors

Linux

References (5)

Patch https://git.kernel.org/stable/c/17afa98bccec4f52203508b3f49b5f948c6fd6ac

Patch https://git.kernel.org/stable/c/34c3a47d20ae55b3600fed733bf96eafe9c500d5

Patch https://git.kernel.org/stable/c/6cfa9e60c0f88fdec6368e081ab968411cc706b1

Patch https://git.kernel.org/stable/c/7337adb20fcc0aebb50eaff2bc5a8dd9a7c6743d

Patch https://git.kernel.org/stable/c/8e0681dd4eee029eb1d533d06993f7cb091efb73

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low-risk

Severity 18/34 · Moderate

Exploitability 0/34 · Minimal

Exposure 5/34 · Minimal