cve/published/2025/CVE-2025-37996.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\nKVM: arm64: Fix uninitialized memcache pointer in user_mem_abort()\n\nCommit fce886a60207 (\"KVM: arm64: Plumb the pKVM MMU in KVM\") made the\ninitialization of the local memcache variable in user_mem_abort()\nconditional, leaving a codepath where it is used uninitialized via\nkvm_pgtable_stage2_map().\n\nThis can fail on any path that requires a stage-2 allocation\nwithout transition via a permission fault or dirty logging.\n\nFix this by making sure that memcache is always valid."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "arch/arm64/kvm/mmu.c"
               ],
               "versions": [
                  {
                     "version": "fce886a6020734d6253c2c5a3bc285e385cc5496",
                     "lessThan": "a26d50f8a4a5049e956984797b5d0dedea4bbb18",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "fce886a6020734d6253c2c5a3bc285e385cc5496",
                     "lessThan": "157dbc4a321f5bb6f8b6c724d12ba720a90f1a7c",
                     "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/arm64/kvm/mmu.c"
               ],
               "versions": [
                  {
                     "version": "6.14",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "6.14",
                     "status": "unaffected",
                     "versionType": "semver"
                  },
                  {
                     "version": "6.14.7",
                     "lessThanOrEqual": "6.14.*",
                     "status": "unaffected",
                     "versionType": "semver"
                  },
                  {
                     "version": "6.15",
                     "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": "6.14",
                           "versionEndExcluding": "6.14.7"
                        },
                        {
                           "vulnerable": true,
                           "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           "versionStartIncluding": "6.14",
                           "versionEndExcluding": "6.15"
                        }
                     ]
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/a26d50f8a4a5049e956984797b5d0dedea4bbb18"
            },
            {
               "url": "https://git.kernel.org/stable/c/157dbc4a321f5bb6f8b6c724d12ba720a90f1a7c"
            }
         ],
         "title": "KVM: arm64: Fix uninitialized memcache pointer in user_mem_abort()",
         "x_generator": {
            "engine": "bippy-1.2.0"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2025-37996",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}