cve/published/2024/CVE-2024-41084.json

{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncxl/region: Avoid null pointer dereference in region lookup\n\ncxl_dpa_to_region() looks up a region based on a memdev and DPA.\nIt wrongly assumes an endpoint found mapping the DPA is also of\na fully assembled region. When not true it leads to a null pointer\ndereference looking up the region name.\n\nThis appears during testing of region lookup after a failure to\nassemble a BIOS defined region or if the lookup raced with the\nassembly of the BIOS defined region.\n\nFailure to clean up BIOS defined regions that fail assembly is an\nissue in itself and a fix to that problem will alleviate some of\nthe impact. It will not alleviate the race condition so let's harden\nthis path.\n\nThe behavior change is that the kernel oops due to a null pointer\ndereference is replaced with a dev_dbg() message noting that an\nendpoint was mapped.\n\nAdditional comments are added so that future users of this function\ncan more clearly understand what it provides."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/cxl/core/region.c"
               ],
               "versions": [
                  {
                     "version": "0a105ab28a4de44eb738ce64e9ac74946aa5133b",
                     "lessThan": "a9e099e29e925f8b31cfe53e8a786b9796f8e453",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "0a105ab28a4de44eb738ce64e9ac74946aa5133b",
                     "lessThan": "b8a40a6dbfb0150c1081384caa9bbe28ce5d5060",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "0a105ab28a4de44eb738ce64e9ac74946aa5133b",
                     "lessThan": "285f2a08841432fc3e498b1cd00cce5216cdf189",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/cxl/core/region.c"
               ],
               "versions": [
                  {
                     "version": "6.4",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "6.4",
                     "status": "unaffected",
                     "versionType": "semver"
                  },
                  {
                     "version": "6.6.37",
                     "lessThanOrEqual": "6.6.*",
                     "status": "unaffected",
                     "versionType": "semver"
                  },
                  {
                     "version": "6.9.8",
                     "lessThanOrEqual": "6.9.*",
                     "status": "unaffected",
                     "versionType": "semver"
                  },
                  {
                     "version": "6.10",
                     "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": "6.4",
                           "versionEndExcluding": "6.6.37"
                        },
                        {
                           "vulnerable": true,
                           "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           "versionStartIncluding": "6.4",
                           "versionEndExcluding": "6.9.8"
                        },
                        {
                           "vulnerable": true,
                           "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           "versionStartIncluding": "6.4",
                           "versionEndExcluding": "6.10"
                        }
                     ]
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/a9e099e29e925f8b31cfe53e8a786b9796f8e453"
            },
            {
               "url": "https://git.kernel.org/stable/c/b8a40a6dbfb0150c1081384caa9bbe28ce5d5060"
            },
            {
               "url": "https://git.kernel.org/stable/c/285f2a08841432fc3e498b1cd00cce5216cdf189"
            }
         ],
         "title": "cxl/region: Avoid null pointer dereference in region lookup",
         "x_generator": {
            "engine": "bippy-1.2.0"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-41084",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}