cve/published/2025/CVE-2025-21789.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\nLoongArch: csum: Fix OoB access in IP checksum code for negative lengths\n\nCommit 69e3a6aa6be2 (\"LoongArch: Add checksum optimization for 64-bit\nsystem\") would cause an undefined shift and an out-of-bounds read.\n\nCommit 8bd795fedb84 (\"arm64: csum: Fix OoB access in IP checksum code\nfor negative lengths\") fixes the same issue on ARM64."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "arch/loongarch/lib/csum.c"
               ],
               "versions": [
                  {
                     "version": "69e3a6aa6be21de6aaf38130fad97ecde34a193c",
                     "lessThan": "964a8895704a22efc06a2a3276b624a5ae985a06",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "69e3a6aa6be21de6aaf38130fad97ecde34a193c",
                     "lessThan": "9f15a8df542c0f08732a67d1a14ee7c22948fb97",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "69e3a6aa6be21de6aaf38130fad97ecde34a193c",
                     "lessThan": "d6508ffff32b44b6d0de06704034e4eef1c307a7",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "69e3a6aa6be21de6aaf38130fad97ecde34a193c",
                     "lessThan": "6287f1a8c16138c2ec750953e35039634018c84a",
                     "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/loongarch/lib/csum.c"
               ],
               "versions": [
                  {
                     "version": "6.4",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "6.4",
                     "status": "unaffected",
                     "versionType": "semver"
                  },
                  {
                     "version": "6.6.79",
                     "lessThanOrEqual": "6.6.*",
                     "status": "unaffected",
                     "versionType": "semver"
                  },
                  {
                     "version": "6.12.16",
                     "lessThanOrEqual": "6.12.*",
                     "status": "unaffected",
                     "versionType": "semver"
                  },
                  {
                     "version": "6.13.4",
                     "lessThanOrEqual": "6.13.*",
                     "status": "unaffected",
                     "versionType": "semver"
                  },
                  {
                     "version": "6.14",
                     "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": "6.6.79"
                        },
                        {
                           "vulnerable": true,
                           "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           "versionStartIncluding": "6.4",
                           "versionEndExcluding": "6.12.16"
                        },
                        {
                           "vulnerable": true,
                           "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           "versionStartIncluding": "6.4",
                           "versionEndExcluding": "6.13.4"
                        },
                        {
                           "vulnerable": true,
                           "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           "versionStartIncluding": "6.4",
                           "versionEndExcluding": "6.14"
                        }
                     ]
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/964a8895704a22efc06a2a3276b624a5ae985a06"
            },
            {
               "url": "https://git.kernel.org/stable/c/9f15a8df542c0f08732a67d1a14ee7c22948fb97"
            },
            {
               "url": "https://git.kernel.org/stable/c/d6508ffff32b44b6d0de06704034e4eef1c307a7"
            },
            {
               "url": "https://git.kernel.org/stable/c/6287f1a8c16138c2ec750953e35039634018c84a"
            }
         ],
         "title": "LoongArch: csum: Fix OoB access in IP checksum code for negative lengths",
         "x_generator": {
            "engine": "bippy-1.2.0"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2025-21789",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}