CVE-2024-56706
Description
In the Linux kernel, the following vulnerability has been resolved:
s390/cpum_sf: Fix and protect memory allocation of SDBs with mutex
Reservation of the PMU hardware is done at first event creation
and is protected by a pair of mutex_lock() and mutex_unlock().
After reservation of the PMU hardware the memory
required for the PMUs the event is to be installed on is
allocated by allocate_buffers() and alloc_sampling_buffer().
This done outside of the mutex protection.
Without mutex protection two or more concurrent invocations of
perf_event_init() may run in parallel.
This can lead to allocation of Sample Data Blocks (SDBs)
multiple times for the same PMU.
Prevent this and protect memory allocation of SDBs by
mutex.
EPSS (Exploit Prediction Scoring System)
EPSS (Exploit Prediction Scoring System)
Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.
EPSS Score Trend (Last 90 Days)
Out-of-bounds Read
DraftCommon Consequences
Applicable Platforms
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
DraftCommon Consequences
Applicable Platforms
Linux Kernel by Linux
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*