CVE-2024-56706 (GCVE-0-2024-56706)

Vulnerability from cvelistv5 – Published: 2024-12-28 09:46 – Updated: 2025-05-04 10:02
VLAI?
Summary
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 8a6fe8f21ec4f049a7b1fe120ad50a5065a9c7a8 , < 4b3bdfa89635db6a53e02955548bd07bebcae233 (git)
Affected: 8a6fe8f21ec4f049a7b1fe120ad50a5065a9c7a8 , < f55bd479d8663a4a4e403b3d308d3d1aa33d92df (git)
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    Linux Linux Affected: 6.12
Unaffected: 0 , < 6.12 (semver)
Unaffected: 6.12.2 , ≤ 6.12.* (semver)
Unaffected: 6.13 , ≤ * (original_commit_for_fix)
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    "dateReserved": "2024-12-27T15:00:39.856Z",
    "dateUpdated": "2025-05-04T10:02:56.177Z",
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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