cve/published/2024/CVE-2024-46794.json

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         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nx86/tdx: Fix data leak in mmio_read()\n\nThe mmio_read() function makes a TDVMCALL to retrieve MMIO data for an\naddress from the VMM.\n\nSean noticed that mmio_read() unintentionally exposes the value of an\ninitialized variable (val) on the stack to the VMM.\n\nThis variable is only needed as an output value. It did not need to be\npassed to the VMM in the first place.\n\nDo not send the original value of *val to the VMM.\n\n[ dhansen: clarify what 'val' is used for. ]"
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "arch/x86/coco/tdx/tdx.c"
               ],
               "versions": [
                  {
                     "version": "31d58c4e557d46fa7f8557714250fb6f89c941ae",
                     "lessThan": "26c6af49d26ffc377e392e30d4086db19eed0ef7",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "31d58c4e557d46fa7f8557714250fb6f89c941ae",
                     "lessThan": "ef00818c50cf55a3a56bd9a9fae867c92dfb84e7",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "31d58c4e557d46fa7f8557714250fb6f89c941ae",
                     "lessThan": "b55ce742afcb8e8189d82f2f1e635ba1b5a461fa",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "31d58c4e557d46fa7f8557714250fb6f89c941ae",
                     "lessThan": "b6fb565a2d15277896583d471b21bc14a0c99661",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "arch/x86/coco/tdx/tdx.c"
               ],
               "versions": [
                  {
                     "version": "5.19",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "5.19",
                     "status": "unaffected",
                     "versionType": "semver"
                  },
                  {
                     "version": "6.1.110",
                     "lessThanOrEqual": "6.1.*",
                     "status": "unaffected",
                     "versionType": "semver"
                  },
                  {
                     "version": "6.6.51",
                     "lessThanOrEqual": "6.6.*",
                     "status": "unaffected",
                     "versionType": "semver"
                  },
                  {
                     "version": "6.10.10",
                     "lessThanOrEqual": "6.10.*",
                     "status": "unaffected",
                     "versionType": "semver"
                  },
                  {
                     "version": "6.11",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "cpeApplicability": [
            {
               "nodes": [
                  {
                     "operator": "OR",
                     "negate": false,
                     "cpeMatch": [
                        {
                           "vulnerable": true,
                           "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           "versionStartIncluding": "5.19",
                           "versionEndExcluding": "6.1.110"
                        },
                        {
                           "vulnerable": true,
                           "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           "versionStartIncluding": "5.19",
                           "versionEndExcluding": "6.6.51"
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                        {
                           "vulnerable": true,
                           "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           "versionStartIncluding": "5.19",
                           "versionEndExcluding": "6.10.10"
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                        {
                           "vulnerable": true,
                           "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           "versionStartIncluding": "5.19",
                           "versionEndExcluding": "6.11"
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         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/26c6af49d26ffc377e392e30d4086db19eed0ef7"
            },
            {
               "url": "https://git.kernel.org/stable/c/ef00818c50cf55a3a56bd9a9fae867c92dfb84e7"
            },
            {
               "url": "https://git.kernel.org/stable/c/b55ce742afcb8e8189d82f2f1e635ba1b5a461fa"
            },
            {
               "url": "https://git.kernel.org/stable/c/b6fb565a2d15277896583d471b21bc14a0c99661"
            }
         ],
         "title": "x86/tdx: Fix data leak in mmio_read()",
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   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-46794",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}