cve/published/2025/CVE-2025-21671.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\nzram: fix potential UAF of zram table\n\nIf zram_meta_alloc failed early, it frees allocated zram->table without\nsetting it NULL.  Which will potentially cause zram_meta_free to access\nthe table if user reset an failed and uninitialized device."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/block/zram/zram_drv.c"
               ],
               "versions": [
                  {
                     "version": "ac3b5366b9b7c9d97b606532ceab43d2329a22f3",
                     "lessThan": "fe3de867f94819ba0f28e035c0b0182150147d95",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "0b5b0b65561b34e6e360de317e4bcd031bfabf42",
                     "lessThan": "571d3f6045cd3a6d9f6aec33b678f3ffe97582ef",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "6fb92e9a52e3feae309a213950f21dfcd1eb0b40",
                     "lessThan": "902ef8f16d5ca77edc77c30656be54186c1e99b7",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "74363ec674cb172d8856de25776c8f3103f05e2f",
                     "lessThan": "212fe1c0df4a150fb6298db2cfff267ceaba5402",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/block/zram/zram_drv.c"
               ],
               "versions": [
                  {
                     "version": "6.1.122",
                     "lessThan": "6.1.127",
                     "status": "affected",
                     "versionType": "semver"
                  },
                  {
                     "version": "6.6.68",
                     "lessThan": "6.6.74",
                     "status": "affected",
                     "versionType": "semver"
                  },
                  {
                     "version": "6.12.7",
                     "lessThan": "6.12.11",
                     "status": "affected",
                     "versionType": "semver"
                  }
               ]
            }
         ],
         "cpeApplicability": [
            {
               "nodes": [
                  {
                     "operator": "OR",
                     "negate": false,
                     "cpeMatch": [
                        {
                           "vulnerable": true,
                           "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           "versionStartIncluding": "6.1.122",
                           "versionEndExcluding": "6.1.127"
                        },
                        {
                           "vulnerable": true,
                           "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           "versionStartIncluding": "6.6.68",
                           "versionEndExcluding": "6.6.74"
                        },
                        {
                           "vulnerable": true,
                           "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           "versionStartIncluding": "6.12.7",
                           "versionEndExcluding": "6.12.11"
                        }
                     ]
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/fe3de867f94819ba0f28e035c0b0182150147d95"
            },
            {
               "url": "https://git.kernel.org/stable/c/571d3f6045cd3a6d9f6aec33b678f3ffe97582ef"
            },
            {
               "url": "https://git.kernel.org/stable/c/902ef8f16d5ca77edc77c30656be54186c1e99b7"
            },
            {
               "url": "https://git.kernel.org/stable/c/212fe1c0df4a150fb6298db2cfff267ceaba5402"
            }
         ],
         "title": "zram: fix potential UAF of zram table",
         "x_generator": {
            "engine": "bippy-1.2.0"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2025-21671",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}