cve-2024-50112
Vulnerability from cvelistv5
Published
2024-11-05 17:10
Modified
2024-12-19 09:33
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: x86/lam: Disable ADDRESS_MASKING in most cases Linear Address Masking (LAM) has a weakness related to transient execution as described in the SLAM paper[1]. Unless Linear Address Space Separation (LASS) is enabled this weakness may be exploitable. Until kernel adds support for LASS[2], only allow LAM for COMPILE_TEST, or when speculation mitigations have been disabled at compile time, otherwise keep LAM disabled. There are no processors in market that support LAM yet, so currently nobody is affected by this issue. [1] SLAM: https://download.vusec.net/papers/slam_sp24.pdf [2] LASS: https://lore.kernel.org/lkml/20230609183632.48706-1-alexander.shishkin@linux.intel.com/ [ dhansen: update SPECULATION_MITIGATIONS -> CPU_MITIGATIONS ]
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3267cb6d3a174ff83d6287dcd5b0047bbd912452Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/60a5ba560f296ad8da153f6ad3f70030bfa3958fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/690599066488d16db96ac0d6340f9372fc56f337Patch
Impacted products
Vendor Product Version
Linux Linux Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/x86/Kconfig"
          ],
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          "vendor": "Linux",
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          "vendor": "Linux",
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              "version": "6.12",
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        }
      ],
      "descriptions": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nx86/lam: Disable ADDRESS_MASKING in most cases\n\nLinear Address Masking (LAM) has a weakness related to transient\nexecution as described in the SLAM paper[1]. Unless Linear Address\nSpace Separation (LASS) is enabled this weakness may be exploitable.\n\nUntil kernel adds support for LASS[2], only allow LAM for COMPILE_TEST,\nor when speculation mitigations have been disabled at compile time,\notherwise keep LAM disabled.\n\nThere are no processors in market that support LAM yet, so currently\nnobody is affected by this issue.\n\n[1] SLAM: https://download.vusec.net/papers/slam_sp24.pdf\n[2] LASS: https://lore.kernel.org/lkml/20230609183632.48706-1-alexander.shishkin@linux.intel.com/\n\n[ dhansen: update SPECULATION_MITIGATIONS -\u003e CPU_MITIGATIONS ]"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-12-19T09:33:20.032Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/60a5ba560f296ad8da153f6ad3f70030bfa3958f"
        },
        {
          "url": "https://git.kernel.org/stable/c/690599066488d16db96ac0d6340f9372fc56f337"
        },
        {
          "url": "https://git.kernel.org/stable/c/3267cb6d3a174ff83d6287dcd5b0047bbd912452"
        }
      ],
      "title": "x86/lam: Disable ADDRESS_MASKING in most cases",
      "x_generator": {
        "engine": "bippy-5f407fcff5a0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-50112",
    "datePublished": "2024-11-05T17:10:44.623Z",
    "dateReserved": "2024-10-21T19:36:19.947Z",
    "dateUpdated": "2024-12-19T09:33:20.032Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
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  }
}


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