{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/rds: fix possible cp null dereference\n\ncp might be null, calling cp->cp_conn would produce null dereference\n\n[Simon Horman adds:]\n\nAnalysis:\n\n* cp is a parameter of __rds_rdma_map and is not reassigned.\n\n* The following call-sites pass a NULL cp argument to __rds_rdma_map()\n\n  - rds_get_mr()\n  - rds_get_mr_for_dest\n\n* Prior to the code above, the following assumes that cp may be NULL\n  (which is indicative, but could itself be unnecessary)\n\n\ttrans_private = rs->rs_transport->get_mr(\n\t\tsg, nents, rs, &mr->r_key, cp ? cp->cp_conn : NULL,\n\t\targs->vec.addr, args->vec.bytes,\n\t\tneed_odp ? ODP_ZEROBASED : ODP_NOT_NEEDED);\n\n* The code modified by this patch is guarded by IS_ERR(trans_private),\n  where trans_private is assigned as per the previous point in this analysis.\n\n  The only implementation of get_mr that I could locate is rds_ib_get_mr()\n  which can return an ERR_PTR if the conn (4th) argument is NULL.\n\n* ret is set to PTR_ERR(trans_private).\n  rds_ib_get_mr can return ERR_PTR(-ENODEV) if the conn (4th) argument is NULL.\n  Thus ret may be -ENODEV in which case the code in question will execute.\n\nConclusion:\n* cp may be NULL at the point where this patch adds a check;\n  this patch does seem to address a possible bug"
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "net/rds/rdma.c"
               ],
               "versions": [
                  {
                     "version": "786854141057",
                     "lessThan": "d275de8ea7be",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "997efea2bf3a",
                     "lessThan": "bcd46782e2ec",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "9dfc15a10dfd",
                     "lessThan": "cfb786b03b03",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "b562ebe21ed9",
                     "lessThan": "d49fac38479b",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "998fd719e6d6",
                     "lessThan": "cbaac2e5488e",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "2b505d052807",
                     "lessThan": "92309bed3c5f",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "c055fc00c07b",
                     "lessThan": "6794090c7420",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "c055fc00c07b",
                     "lessThan": "62fc3357e079",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "net/rds/rdma.c"
               ],
               "versions": [
                  {
                     "version": "6.8",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "6.8",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.19.312",
                     "lessThanOrEqual": "4.19.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.4.274",
                     "lessThanOrEqual": "5.4.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.10.215",
                     "lessThanOrEqual": "5.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.15.154",
                     "lessThanOrEqual": "5.15.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.1.85",
                     "lessThanOrEqual": "6.1.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.6.26",
                     "lessThanOrEqual": "6.6.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.8.5",
                     "lessThanOrEqual": "6.8.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.9",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/d275de8ea7be3a453629fddae41d4156762e814c"
            },
            {
               "url": "https://git.kernel.org/stable/c/bcd46782e2ec3825d10c1552fcb674d491cc09f9"
            },
            {
               "url": "https://git.kernel.org/stable/c/cfb786b03b03c5ff38882bee38525eb9987e4d14"
            },
            {
               "url": "https://git.kernel.org/stable/c/d49fac38479bfdaec52b3ea274d290c47a294029"
            },
            {
               "url": "https://git.kernel.org/stable/c/cbaac2e5488ed54833897264a5ffb2a341a9f196"
            },
            {
               "url": "https://git.kernel.org/stable/c/92309bed3c5fbe2ccd4c45056efd42edbd06162d"
            },
            {
               "url": "https://git.kernel.org/stable/c/6794090c742008c53b344b35b021d4a3093dc50a"
            },
            {
               "url": "https://git.kernel.org/stable/c/62fc3357e079a07a22465b9b6ef71bb6ea75ee4b"
            }
         ],
         "title": "net/rds: fix possible cp null dereference",
         "x_generator": {
            "engine": "bippy-a5840b7849dd"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-35902",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}