fkie_cve-2023-53254
Vulnerability from fkie_nvd
Published
2025-09-15 15:15
Modified
2025-09-15 15:22
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: cacheinfo: Fix shared_cpu_map to handle shared caches at different levels The cacheinfo sets up the shared_cpu_map by checking whether the caches with the same index are shared between CPUs. However, this will trigger slab-out-of-bounds access if the CPUs do not have the same cache hierarchy. Another problem is the mismatched shared_cpu_map when the shared cache does not have the same index between CPUs. CPU0 I D L3 index 0 1 2 x ^ ^ ^ ^ index 0 1 2 3 CPU1 I D L2 L3 This patch checks each cache is shared with all caches on other CPUs.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/198102c9103fc78d8478495971947af77edb05c1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2f588d0345d69a35e451077afed428fd057a5e34
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dea49f2993f57d8a2df2cacb0bf649ef49b28879
Impacted products
Vendor Product Version


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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncacheinfo: Fix shared_cpu_map to handle shared caches at different levels\n\nThe cacheinfo sets up the shared_cpu_map by checking whether the caches\nwith the same index are shared between CPUs. However, this will trigger\nslab-out-of-bounds access if the CPUs do not have the same cache hierarchy.\nAnother problem is the mismatched shared_cpu_map when the shared cache does\nnot have the same index between CPUs.\n\nCPU0\tI\tD\tL3\nindex\t0\t1\t2\tx\n\t^\t^\t^\t^\nindex\t0\t1\t2\t3\nCPU1\tI\tD\tL2\tL3\n\nThis patch checks each cache is shared with all caches on other CPUs."
    }
  ],
  "id": "CVE-2023-53254",
  "lastModified": "2025-09-15T15:22:27.090",
  "metrics": {},
  "published": "2025-09-15T15:15:52.727",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/198102c9103fc78d8478495971947af77edb05c1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2f588d0345d69a35e451077afed428fd057a5e34"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/dea49f2993f57d8a2df2cacb0bf649ef49b28879"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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