CVE-2025-38388 Affecting kernel-uek-tools package, versions <0:6.12.0-103.40.4.1.el10uek
Threat Intelligence
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Test your applications- Snyk IDSNYK-ORACLE10-KERNELUEKTOOLS-12587206
- published10 Sept 2025
- disclosed25 Jul 2025
Introduced: 25 Jul 2025
CVE-2025-38388 (opens in a new tab)How to fix?
Upgrade Oracle:10 kernel-uek-tools to version 0:6.12.0-103.40.4.1.el10uek or higher.
This issue was patched in ELSA-2025-20551.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-uek-tools package and not the kernel-uek-tools package as distributed by Oracle.
See How to fix? for Oracle:10 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
firmware: arm_ffa: Replace mutex with rwlock to avoid sleep in atomic context
The current use of a mutex to protect the notifier hashtable accesses can lead to issues in the atomic context. It results in the below kernel warnings:
| BUG: sleeping function called from invalid context at kernel/locking/mutex.c:258 | in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 9, name: kworker/0:0 | preempt_count: 1, expected: 0 | RCU nest depth: 0, expected: 0 | CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 Not tainted 6.14.0 #4 | Workqueue: ffa_pcpu_irq_notification notif_pcpu_irq_work_fn | Call trace: | show_stack+0x18/0x24 (C) | dump_stack_lvl+0x78/0x90 | dump_stack+0x18/0x24 | __might_resched+0x114/0x170 | __might_sleep+0x48/0x98 | mutex_lock+0x24/0x80 | handle_notif_callbacks+0x54/0xe0 | notif_get_and_handle+0x40/0x88 | generic_exec_single+0x80/0xc0 | smp_call_function_single+0xfc/0x1a0 | notif_pcpu_irq_work_fn+0x2c/0x38 | process_one_work+0x14c/0x2b4 | worker_thread+0x2e4/0x3e0 | kthread+0x13c/0x210 | ret_from_fork+0x10/0x20
To address this, replace the mutex with an rwlock to protect the notifier hashtable accesses. This ensures that read-side locking does not sleep and multiple readers can acquire the lock concurrently, avoiding unnecessary contention and potential deadlocks. Writer access remains exclusive, preserving correctness.
This change resolves warnings from lockdep about potential sleep in atomic context.
References
- https://linux.oracle.com/cve/CVE-2025-38388.html
- https://linux.oracle.com/errata/ELSA-2025-20551.html
- https://git.kernel.org/stable/c/31405510a48dcf054abfa5b7b8d70ce1b27d1f13
- https://git.kernel.org/stable/c/8986f8f61b482c0e6efd28f0b2423d9640c20eb1
- https://git.kernel.org/stable/c/9ca7a421229bbdfbe2e1e628cff5cfa782720a10