{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntipc: force a dst refcount before doing decryption\n\nAs it says in commit 3bc07321ccc2 (\"xfrm: Force a dst refcount before\nentering the xfrm type handlers\"):\n\n\"Crypto requests might return asynchronous. In this case we leave the\n rcu protected region, so force a refcount on the skb's destination\n entry before we enter the xfrm type input/output handlers.\"\n\nOn TIPC decryption path it has the same problem, and skb_dst_force()\nshould be called before doing decryption to avoid a possible crash.\n\nShuang reported this issue when this warning is triggered:\n\n  [] WARNING: include/net/dst.h:337 tipc_sk_rcv+0x1055/0x1ea0 [tipc]\n  [] Kdump: loaded Tainted: G W --------- - - 4.18.0-496.el8.x86_64+debug\n  [] Workqueue: crypto cryptd_queue_worker\n  [] RIP: 0010:tipc_sk_rcv+0x1055/0x1ea0 [tipc]\n  [] Call Trace:\n  [] tipc_sk_mcast_rcv+0x548/0xea0 [tipc]\n  [] tipc_rcv+0xcf5/0x1060 [tipc]\n  [] tipc_aead_decrypt_done+0x215/0x2e0 [tipc]\n  [] cryptd_aead_crypt+0xdb/0x190\n  [] cryptd_queue_worker+0xed/0x190\n  [] process_one_work+0x93d/0x17e0"
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "net/tipc/node.c"
               ],
               "versions": [
                  {
                     "version": "fc1b6d6de220",
                     "lessThan": "3eb1b3962789",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "fc1b6d6de220",
                     "lessThan": "692803b39a36",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "fc1b6d6de220",
                     "lessThan": "623c90d86a61",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "fc1b6d6de220",
                     "lessThan": "b57a4a2dc874",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "fc1b6d6de220",
                     "lessThan": "6808b4137167",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "fc1b6d6de220",
                     "lessThan": "2ebe8f840c74",
                     "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/tipc/node.c"
               ],
               "versions": [
                  {
                     "version": "5.5",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "5.5",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.10.221",
                     "lessThanOrEqual": "5.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.15.162",
                     "lessThanOrEqual": "5.15.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.1.96",
                     "lessThanOrEqual": "6.1.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.6.36",
                     "lessThanOrEqual": "6.6.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.9.7",
                     "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/3eb1b39627892c4e26cb0162b75725aa5fcc60c8"
            },
            {
               "url": "https://git.kernel.org/stable/c/692803b39a36e63ac73208e0a3769ae6a2f9bc76"
            },
            {
               "url": "https://git.kernel.org/stable/c/623c90d86a61e3780f682b32928af469c66ec4c2"
            },
            {
               "url": "https://git.kernel.org/stable/c/b57a4a2dc8746cea58a922ebe31b6aa629d69d93"
            },
            {
               "url": "https://git.kernel.org/stable/c/6808b41371670c51feea14f63ade211e78100930"
            },
            {
               "url": "https://git.kernel.org/stable/c/2ebe8f840c7450ecbfca9d18ac92e9ce9155e269"
            }
         ],
         "title": "tipc: force a dst refcount before doing decryption",
         "x_generator": {
            "engine": "bippy-c9c4e1df01b2"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-40983",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}