{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntls: fix missing memory barrier in tls_init\n\nIn tls_init(), a write memory barrier is missing, and store-store\nreordering may cause NULL dereference in tls_{setsockopt,getsockopt}.\n\nCPU0                               CPU1\n-----                              -----\n// In tls_init()\n// In tls_ctx_create()\nctx = kzalloc()\nctx->sk_proto = READ_ONCE(sk->sk_prot) -(1)\n\n// In update_sk_prot()\nWRITE_ONCE(sk->sk_prot, tls_prots)     -(2)\n\n                                   // In sock_common_setsockopt()\n                                   READ_ONCE(sk->sk_prot)->setsockopt()\n\n                                   // In tls_{setsockopt,getsockopt}()\n                                   ctx->sk_proto->setsockopt()    -(3)\n\nIn the above scenario, when (1) and (2) are reordered, (3) can observe\nthe NULL value of ctx->sk_proto, causing NULL dereference.\n\nTo fix it, we rely on rcu_assign_pointer() which implies the release\nbarrier semantic. By moving rcu_assign_pointer() after ctx->sk_proto is\ninitialized, we can ensure that ctx->sk_proto are visible when\nchanging sk->sk_prot."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "net/tls/tls_main.c"
               ],
               "versions": [
                  {
                     "version": "d5bee7374b68",
                     "lessThan": "d72e126e9a36",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "d5bee7374b68",
                     "lessThan": "2c260a24cf1c",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "d5bee7374b68",
                     "lessThan": "335c8f1566d8",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "d5bee7374b68",
                     "lessThan": "ab67c2fd3d07",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "d5bee7374b68",
                     "lessThan": "ef21007a7b58",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "d5bee7374b68",
                     "lessThan": "91e61dd7a0af",
                     "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/tls/tls_main.c"
               ],
               "versions": [
                  {
                     "version": "5.7",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "5.7",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.10.219",
                     "lessThanOrEqual": "5.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.15.161",
                     "lessThanOrEqual": "5.15.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.1.93",
                     "lessThanOrEqual": "6.1.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.6.33",
                     "lessThanOrEqual": "6.6.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.9.4",
                     "lessThanOrEqual": "6.9.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.10",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/d72e126e9a36d3d33889829df8fc90100bb0e071"
            },
            {
               "url": "https://git.kernel.org/stable/c/2c260a24cf1c4d30ea3646124f766ee46169280b"
            },
            {
               "url": "https://git.kernel.org/stable/c/335c8f1566d8e44c384d16b450a18554896d4e8b"
            },
            {
               "url": "https://git.kernel.org/stable/c/ab67c2fd3d070a21914d0c31319d3858ab4e199c"
            },
            {
               "url": "https://git.kernel.org/stable/c/ef21007a7b581c7fe64d5a10c320880a033c837b"
            },
            {
               "url": "https://git.kernel.org/stable/c/91e61dd7a0af660408e87372d8330ceb218be302"
            }
         ],
         "title": "tls: fix missing memory barrier in tls_init",
         "x_generator": {
            "engine": "bippy-c9c4e1df01b2"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-36489",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}