{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nionic: use dev_consume_skb_any outside of napi\n\nIf we're not in a NAPI softirq context, we need to be careful\nabout how we call napi_consume_skb(), specifically we need to\ncall it with budget==0 to signal to it that we're not in a\nsafe context.\n\nThis was found while running some configuration stress testing\nof traffic and a change queue config loop running, and this\ncurious note popped out:\n\n[ 4371.402645] BUG: using smp_processor_id() in preemptible [00000000] code: ethtool/20545\n[ 4371.402897] caller is napi_skb_cache_put+0x16/0x80\n[ 4371.403120] CPU: 25 PID: 20545 Comm: ethtool Kdump: loaded Tainted: G           OE      6.10.0-rc3-netnext+ #8\n[ 4371.403302] Hardware name: HPE ProLiant DL360 Gen10/ProLiant DL360 Gen10, BIOS U32 01/23/2021\n[ 4371.403460] Call Trace:\n[ 4371.403613]  <TASK>\n[ 4371.403758]  dump_stack_lvl+0x4f/0x70\n[ 4371.403904]  check_preemption_disabled+0xc1/0xe0\n[ 4371.404051]  napi_skb_cache_put+0x16/0x80\n[ 4371.404199]  ionic_tx_clean+0x18a/0x240 [ionic]\n[ 4371.404354]  ionic_tx_cq_service+0xc4/0x200 [ionic]\n[ 4371.404505]  ionic_tx_flush+0x15/0x70 [ionic]\n[ 4371.404653]  ? ionic_lif_qcq_deinit.isra.23+0x5b/0x70 [ionic]\n[ 4371.404805]  ionic_txrx_deinit+0x71/0x190 [ionic]\n[ 4371.404956]  ionic_reconfigure_queues+0x5f5/0xff0 [ionic]\n[ 4371.405111]  ionic_set_ringparam+0x2e8/0x3e0 [ionic]\n[ 4371.405265]  ethnl_set_rings+0x1f1/0x300\n[ 4371.405418]  ethnl_default_set_doit+0xbb/0x160\n[ 4371.405571]  genl_family_rcv_msg_doit+0xff/0x130\n\t[...]\n\nI found that ionic_tx_clean() calls napi_consume_skb() which calls\nnapi_skb_cache_put(), but before that last call is the note\n    /* Zero budget indicate non-NAPI context called us, like netpoll */\nand\n    DEBUG_NET_WARN_ON_ONCE(!in_softirq());\n\nThose are pretty big hints that we're doing it wrong.  We can pass a\ncontext hint down through the calls to let ionic_tx_clean() know what\nwe're doing so it can call napi_consume_skb() correctly."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/net/ethernet/pensando/ionic/ionic_dev.h",
                  "drivers/net/ethernet/pensando/ionic/ionic_lif.c",
                  "drivers/net/ethernet/pensando/ionic/ionic_txrx.c"
               ],
               "versions": [
                  {
                     "version": "386e69865311",
                     "lessThan": "ef7646ed49ff",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "386e69865311",
                     "lessThan": "84b767f9e34f",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/net/ethernet/pensando/ionic/ionic_dev.h",
                  "drivers/net/ethernet/pensando/ionic/ionic_lif.c",
                  "drivers/net/ethernet/pensando/ionic/ionic_txrx.c"
               ],
               "versions": [
                  {
                     "version": "6.9",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "6.9",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.9.8",
                     "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/ef7646ed49fff962e97b276f4ab91327a67eeb5a"
            },
            {
               "url": "https://git.kernel.org/stable/c/84b767f9e34fdb143c09e66a2a20722fc2921821"
            }
         ],
         "title": "ionic: use dev_consume_skb_any outside of napi",
         "x_generator": {
            "engine": "bippy-c9c4e1df01b2"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-42071",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}