{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btnxpuart: Fix Null pointer dereference in btnxpuart_flush()\n\nThis adds a check before freeing the rx->skb in flush and close\nfunctions to handle the kernel crash seen while removing driver after FW\ndownload fails or before FW download completes.\n\ndmesg log:\n[   54.634586] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000080\n[   54.643398] Mem abort info:\n[   54.646204]   ESR = 0x0000000096000004\n[   54.649964]   EC = 0x25: DABT (current EL), IL = 32 bits\n[   54.655286]   SET = 0, FnV = 0\n[   54.658348]   EA = 0, S1PTW = 0\n[   54.661498]   FSC = 0x04: level 0 translation fault\n[   54.666391] Data abort info:\n[   54.669273]   ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000\n[   54.674768]   CM = 0, WnR = 0, TnD = 0, TagAccess = 0\n[   54.674771]   GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0\n[   54.674775] user pgtable: 4k pages, 48-bit VAs, pgdp=0000000048860000\n[   54.674780] [0000000000000080] pgd=0000000000000000, p4d=0000000000000000\n[   54.703880] Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP\n[   54.710152] Modules linked in: btnxpuart(-) overlay fsl_jr_uio caam_jr caamkeyblob_desc caamhash_desc caamalg_desc crypto_engine authenc libdes crct10dif_ce polyval_ce polyval_generic snd_soc_imx_spdif snd_soc_imx_card snd_soc_ak5558 snd_soc_ak4458 caam secvio error snd_soc_fsl_micfil snd_soc_fsl_spdif snd_soc_fsl_sai snd_soc_fsl_utils imx_pcm_dma gpio_ir_recv rc_core sch_fq_codel fuse\n[   54.744357] CPU: 3 PID: 72 Comm: kworker/u9:0 Not tainted 6.6.3-otbr-g128004619037 #2\n[   54.744364] Hardware name: FSL i.MX8MM EVK board (DT)\n[   54.744368] Workqueue: hci0 hci_power_on\n[   54.757244] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n[   54.757249] pc : kfree_skb_reason+0x18/0xb0\n[   54.772299] lr : btnxpuart_flush+0x40/0x58 [btnxpuart]\n[   54.782921] sp : ffff8000805ebca0\n[   54.782923] x29: ffff8000805ebca0 x28: ffffa5c6cf1869c0 x27: ffffa5c6cf186000\n[   54.782931] x26: ffff377b84852400 x25: ffff377b848523c0 x24: ffff377b845e7230\n[   54.782938] x23: ffffa5c6ce8dbe08 x22: ffffa5c6ceb65410 x21: 00000000ffffff92\n[   54.782945] x20: ffffa5c6ce8dbe98 x19: ffffffffffffffac x18: ffffffffffffffff\n[   54.807651] x17: 0000000000000000 x16: ffffa5c6ce2824ec x15: ffff8001005eb857\n[   54.821917] x14: 0000000000000000 x13: ffffa5c6cf1a02e0 x12: 0000000000000642\n[   54.821924] x11: 0000000000000040 x10: ffffa5c6cf19d690 x9 : ffffa5c6cf19d688\n[   54.821931] x8 : ffff377b86000028 x7 : 0000000000000000 x6 : 0000000000000000\n[   54.821938] x5 : ffff377b86000000 x4 : 0000000000000000 x3 : 0000000000000000\n[   54.843331] x2 : 0000000000000000 x1 : 0000000000000002 x0 : ffffffffffffffac\n[   54.857599] Call trace:\n[   54.857601]  kfree_skb_reason+0x18/0xb0\n[   54.863878]  btnxpuart_flush+0x40/0x58 [btnxpuart]\n[   54.863888]  hci_dev_open_sync+0x3a8/0xa04\n[   54.872773]  hci_power_on+0x54/0x2e4\n[   54.881832]  process_one_work+0x138/0x260\n[   54.881842]  worker_thread+0x32c/0x438\n[   54.881847]  kthread+0x118/0x11c\n[   54.881853]  ret_from_fork+0x10/0x20\n[   54.896406] Code: a9be7bfd 910003fd f9000bf3 aa0003f3 (b940d400)\n[   54.896410] ---[ end trace 0000000000000000 ]---"
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/bluetooth/btnxpuart.c"
               ],
               "versions": [
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "013dae4735d2",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "056e0cd381d5",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "c68bbf5e334b",
                     "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/bluetooth/btnxpuart.c"
               ],
               "versions": [
                  {
                     "version": "6.6.51",
                     "lessThanOrEqual": "6.6.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.10.10",
                     "lessThanOrEqual": "6.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.11",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/013dae4735d2010544d1f2121bdeb8e6c9ea171e"
            },
            {
               "url": "https://git.kernel.org/stable/c/056e0cd381d59a9124b7c43dd715e15f56a11635"
            },
            {
               "url": "https://git.kernel.org/stable/c/c68bbf5e334b35b36ac5b9f0419f1f93f796bad1"
            }
         ],
         "title": "Bluetooth: btnxpuart: Fix Null pointer dereference in btnxpuart_flush()",
         "x_generator": {
            "engine": "bippy-c9c4e1df01b2"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-46749",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}