Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: um: work around sched_yield not yielding in time-travel mode sched_yield by a userspace may not actually cause scheduling in time-travel mode as no time has passed. In the case seen it appears to be a badly implemented userspace spinlock in ASAN. Unfortunately, with time-travel it causes an extreme slowdown or even deadlock depending on the kernel configuration (CONFIG_UML_MAX_USERSPACE_ITERATIONS). Work around it by accounting time to the process whenever it executes a sched_yield syscall.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 065038706f77a56754e8f0c2556dab7e22dfe577 before 990ddc65173776f1e01e7135d8c1fd5f8fd4d5d2; affected 065038706f77a56754e8f0c2556dab7e22dfe577 before 887c5c12e80c8424bd471122d2e8b6b462e12874 |
| Linux / Linux | affected 5.3; unaffected 0 before 5.3; unaffected 6.14.5 through 6.14.*; unaffected 6.15 through * |
CWE
No CWE identifiers supplied.