{
  "cveId": "CVE-2024-46749",
  "url": "https://patchblox.com/security/cve/CVE-2024-46749",
  "summary": "CVE-2024-46749 is fixed in 26 products on 1 platform, first by DEBIAN-CVE-2024-46749, released September 18, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  Bluetooth: btnxpuart: Fix Null pointer dereferen...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  Bluetooth: btnxpuart: Fix Null pointer dereference in btnxpuart_flush()  This adds a check before freeing the rx-\u003Eskb in flush and close functions to handle the kernel crash seen while removing driver after FW download fails or before FW download completes.  dmesg log: [   54.634586] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000080 [   54.643398] Mem abort info: [   54.646204]   ESR = 0x0000000096000004 [   54.649964]   EC = 0x25: DABT (current EL), IL = 32 bits [   54.655286]   SET = 0, FnV = 0 [   54.658348]   EA = 0, S1PTW = 0 [   54.661498]   FSC = 0x04: level 0 translation fault [   54.666391] Data abort info: [   54.669273]   ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000 [   54.674768]   CM = 0, WnR = 0, TnD = 0, TagAccess = 0 [   54.674771]   GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [   54.674775] user pgtable: 4k pages, 48-bit VAs, pgdp=0000000048860000 [   54.674780] [0000000000000080] pgd=0000000000000000, p4d=0000000000000000 [   54.703880] Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP [   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 [   54.744357] CPU: 3 PID: 72 Comm: kworker/u9:0 Not tainted 6.6.3-otbr-g128004619037 #2 [   54.744364] Hardware name: FSL i.MX8MM EVK board (DT) [   54.744368] Workqueue: hci0 hci_power_on [   54.757244] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [   54.757249] pc : kfree_skb_reason\u002B0x18/0xb0 [   54.772299] lr : btnxpuart_flush\u002B0x40/0x58 [btnxpuart] [   54.782921] sp : ffff8000805ebca0 [   54.782923] x29: ffff8000805ebca0 x28: ffffa5c6cf1869c0 x27: ffffa5c6cf186000 [   54.782931] x26: ffff377b84852400 x25: ffff377b848523c0 x24: ffff377b845e7230 [   54.782938] x23: ffffa5c6ce8dbe08 x22: ffffa5c6ceb65410 x21: 00000000ffffff92 [   54.782945] x20: ffffa5c6ce8dbe98 x19: ffffffffffffffac x18: ffffffffffffffff [   54.807651] x17: 0000000000000000 x16: ffffa5c6ce2824ec x15: ffff8001005eb857 [   54.821917] x14: 0000000000000000 x13: ffffa5c6cf1a02e0 x12: 0000000000000642 [   54.821924] x11: 0000000000000040 x10: ffffa5c6cf19d690 x9 : ffffa5c6cf19d688 [   54.821931] x8 : ffff377b86000028 x7 : 0000000000000000 x6 : 0000000000000000 [   54.821938] x5 : ffff377b86000000 x4 : 0000000000000000 x3 : 0000000000000000 [   54.843331] x2 : 0000000000000000 x1 : 0000000000000002 x0 : ffffffffffffffac [   54.857599] Call trace: [   54.857601]  kfree_skb_reason\u002B0x18/0xb0 [   54.863878]  btnxpuart_flush\u002B0x40/0x58 [btnxpuart] [   54.863888]  hci_dev_open_sync\u002B0x3a8/0xa04 [   54.872773]  hci_power_on\u002B0x54/0x2e4 [   54.881832]  process_one_work\u002B0x138/0x260 [   54.881842]  worker_thread\u002B0x32c/0x438 [   54.881847]  kthread\u002B0x118/0x11c [   54.881853]  ret_from_fork\u002B0x10/0x20 [   54.896406] Code: a9be7bfd 910003fd f9000bf3 aa0003f3 (b940d400) [   54.896410] ---[ end trace 0000000000000000 ]---",
  "published": "2024-09-18T08:15:03Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00232,
  "epssPercentile": 0.14103,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
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