{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nibmvnic: don't release napi in __ibmvnic_open()\n\nIf __ibmvnic_open() encounters an error such as when setting link state,\nit calls release_resources() which frees the napi structures needlessly.\nInstead, have __ibmvnic_open() only clean up the work it did so far (i.e.\ndisable napi and irqs) and leave the rest to the callers.\n\nIf caller of __ibmvnic_open() is ibmvnic_open(), it should release the\nresources immediately. If the caller is do_reset() or do_hard_reset(),\nthey will release the resources on the next reset.\n\nThis fixes following crash that occurred when running the drmgr command\nseveral times to add/remove a vnic interface:\n\n\t[102056] ibmvnic 30000003 env3: Disabling rx_scrq[6] irq\n\t[102056] ibmvnic 30000003 env3: Disabling rx_scrq[7] irq\n\t[102056] ibmvnic 30000003 env3: Replenished 8 pools\n\tKernel attempted to read user page (10) - exploit attempt? (uid: 0)\n\tBUG: Kernel NULL pointer dereference on read at 0x00000010\n\tFaulting instruction address: 0xc000000000a3c840\n\tOops: Kernel access of bad area, sig: 11 [#1]\n\tLE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=2048 NUMA pSeries\n\t...\n\tCPU: 9 PID: 102056 Comm: kworker/9:2 Kdump: loaded Not tainted 5.16.0-rc5-autotest-g6441998e2e37 #1\n\tWorkqueue: events_long __ibmvnic_reset [ibmvnic]\n\tNIP:  c000000000a3c840 LR: c0080000029b5378 CTR: c000000000a3c820\n\tREGS: c0000000548e37e0 TRAP: 0300   Not tainted  (5.16.0-rc5-autotest-g6441998e2e37)\n\tMSR:  8000000000009033 <SF,EE,ME,IR,DR,RI,LE>  CR: 28248484  XER: 00000004\n\tCFAR: c0080000029bdd24 DAR: 0000000000000010 DSISR: 40000000 IRQMASK: 0\n\tGPR00: c0080000029b55d0 c0000000548e3a80 c0000000028f0200 0000000000000000\n\t...\n\tNIP [c000000000a3c840] napi_enable+0x20/0xc0\n\tLR [c0080000029b5378] __ibmvnic_open+0xf0/0x430 [ibmvnic]\n\tCall Trace:\n\t[c0000000548e3a80] [0000000000000006] 0x6 (unreliable)\n\t[c0000000548e3ab0] [c0080000029b55d0] __ibmvnic_open+0x348/0x430 [ibmvnic]\n\t[c0000000548e3b40] [c0080000029bcc28] __ibmvnic_reset+0x500/0xdf0 [ibmvnic]\n\t[c0000000548e3c60] [c000000000176228] process_one_work+0x288/0x570\n\t[c0000000548e3d00] [c000000000176588] worker_thread+0x78/0x660\n\t[c0000000548e3da0] [c0000000001822f0] kthread+0x1c0/0x1d0\n\t[c0000000548e3e10] [c00000000000cf64] ret_from_kernel_thread+0x5c/0x64\n\tInstruction dump:\n\t7d2948f8 792307e0 4e800020 60000000 3c4c01eb 384239e0 f821ffd1 39430010\n\t38a0fff6 e92d1100 f9210028 39200000 <e9030010> f9010020 60420000 e9210020\n\t---[ end trace 5f8033b08fd27706 ]---"
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/net/ethernet/ibm/ibmvnic.c"
               ],
               "versions": [
                  {
                     "version": "ed651a10875f",
                     "lessThan": "960dfaf3b578",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "ed651a10875f",
                     "lessThan": "e08cb9056fb2",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "ed651a10875f",
                     "lessThan": "61772b0908c6",
                     "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/ibm/ibmvnic.c"
               ],
               "versions": [
                  {
                     "version": "4.12",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "4.12",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.15.27",
                     "lessThanOrEqual": "5.15.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.16.10",
                     "lessThanOrEqual": "5.16.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.17",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/960dfaf3b578dd23af012590e809ae2d58ba1827"
            },
            {
               "url": "https://git.kernel.org/stable/c/e08cb9056fb2564d1f6bad789bdf79ab09bf2f81"
            },
            {
               "url": "https://git.kernel.org/stable/c/61772b0908c640d0309c40f7d41d062ca4e979fa"
            }
         ],
         "title": "ibmvnic: don't release napi in __ibmvnic_open()",
         "x_generator": {
            "engine": "bippy-c9c4e1df01b2"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2022-48811",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}