CVE-2023-52498
Description
In the Linux kernel, the following vulnerability has been resolved: PM: sleep: Fix possible deadlocks in core system-wide PM code It is reported that in low-memory situations the system-wide resume core code deadlocks, because async_schedule_dev() executes its argument function synchronously if it cannot allocate memory (and not only in that case) and that function attempts to acquire a mutex that is already held. Executing the argument function synchronously from within dpm_async_fn() may also be problematic for ordering reasons (it may cause a consumer device's resume callback to be invoked before a requisite supplier device's one, for example). Address this by changing the code in question to use async_schedule_dev_nocall() for scheduling the asynchronous execution of device suspend and resume functions and to directly run them synchronously if async_schedule_dev_nocall() returns false.
How to fix
- linux linux_kernel5.10.210, 5.15.149, 6.1.76, 6.6.15, 6.7.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | v < 5.10.210, 5.11 ≤ v < 5.15.149, 5.16 ≤ v < 6.1.76, 6.2 ≤ v < 6.6.15, 6.7 ≤ v < 6.7.3 | 5.10.210, 5.15.149, 6.1.76, 6.6.15, 6.7.3 |
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