fkie_cve-2023-53475
Vulnerability from fkie_nvd
Published
2025-10-01 12:15
Modified
2025-10-02 19:12
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: usb: xhci: tegra: fix sleep in atomic call When we set the dual-role port to Host mode, we observed the following splat: [ 167.057718] BUG: sleeping function called from invalid context at include/linux/sched/mm.h:229 [ 167.057872] Workqueue: events tegra_xusb_usb_phy_work [ 167.057954] Call trace: [ 167.057962] dump_backtrace+0x0/0x210 [ 167.057996] show_stack+0x30/0x50 [ 167.058020] dump_stack_lvl+0x64/0x84 [ 167.058065] dump_stack+0x14/0x34 [ 167.058100] __might_resched+0x144/0x180 [ 167.058140] __might_sleep+0x64/0xd0 [ 167.058171] slab_pre_alloc_hook.constprop.0+0xa8/0x110 [ 167.058202] __kmalloc_track_caller+0x74/0x2b0 [ 167.058233] kvasprintf+0xa4/0x190 [ 167.058261] kasprintf+0x58/0x90 [ 167.058285] tegra_xusb_find_port_node.isra.0+0x58/0xd0 [ 167.058334] tegra_xusb_find_port+0x38/0xa0 [ 167.058380] tegra_xusb_padctl_get_usb3_companion+0x38/0xd0 [ 167.058430] tegra_xhci_id_notify+0x8c/0x1e0 [ 167.058473] notifier_call_chain+0x88/0x100 [ 167.058506] atomic_notifier_call_chain+0x44/0x70 [ 167.058537] tegra_xusb_usb_phy_work+0x60/0xd0 [ 167.058581] process_one_work+0x1dc/0x4c0 [ 167.058618] worker_thread+0x54/0x410 [ 167.058650] kthread+0x188/0x1b0 [ 167.058672] ret_from_fork+0x10/0x20 The function tegra_xusb_padctl_get_usb3_companion eventually calls tegra_xusb_find_port and this in turn calls kasprintf which might sleep and so cannot be called from an atomic context. Fix this by moving the call to tegra_xusb_padctl_get_usb3_companion to the tegra_xhci_id_work function where it is really needed.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1122474b757a5dd8b2b50008a97f33cdb10dff6e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/130c61c516cd0684282a8f6ab163281d60642fc5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1fe6015aa92cc0dfd875c1d3c7c1750a1b0767d9
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4c7f9d2e413dc06a157c4e5dccde84aaf4655eb3
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b4b4f17aa46c025da77aed5133b08971959c9684
Impacted products
Vendor Product Version


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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: xhci: tegra: fix sleep in atomic call\n\nWhen we set the dual-role port to Host mode, we observed the following\nsplat:\n[  167.057718] BUG: sleeping function called from invalid context at\ninclude/linux/sched/mm.h:229\n[  167.057872] Workqueue: events tegra_xusb_usb_phy_work\n[  167.057954] Call trace:\n[  167.057962]  dump_backtrace+0x0/0x210\n[  167.057996]  show_stack+0x30/0x50\n[  167.058020]  dump_stack_lvl+0x64/0x84\n[  167.058065]  dump_stack+0x14/0x34\n[  167.058100]  __might_resched+0x144/0x180\n[  167.058140]  __might_sleep+0x64/0xd0\n[  167.058171]  slab_pre_alloc_hook.constprop.0+0xa8/0x110\n[  167.058202]  __kmalloc_track_caller+0x74/0x2b0\n[  167.058233]  kvasprintf+0xa4/0x190\n[  167.058261]  kasprintf+0x58/0x90\n[  167.058285]  tegra_xusb_find_port_node.isra.0+0x58/0xd0\n[  167.058334]  tegra_xusb_find_port+0x38/0xa0\n[  167.058380]  tegra_xusb_padctl_get_usb3_companion+0x38/0xd0\n[  167.058430]  tegra_xhci_id_notify+0x8c/0x1e0\n[  167.058473]  notifier_call_chain+0x88/0x100\n[  167.058506]  atomic_notifier_call_chain+0x44/0x70\n[  167.058537]  tegra_xusb_usb_phy_work+0x60/0xd0\n[  167.058581]  process_one_work+0x1dc/0x4c0\n[  167.058618]  worker_thread+0x54/0x410\n[  167.058650]  kthread+0x188/0x1b0\n[  167.058672]  ret_from_fork+0x10/0x20\n\nThe function tegra_xusb_padctl_get_usb3_companion eventually calls\ntegra_xusb_find_port and this in turn calls kasprintf which might sleep\nand so cannot be called from an atomic context.\n\nFix this by moving the call to tegra_xusb_padctl_get_usb3_companion to\nthe tegra_xhci_id_work function where it is really needed."
    }
  ],
  "id": "CVE-2023-53475",
  "lastModified": "2025-10-02T19:12:17.160",
  "metrics": {},
  "published": "2025-10-01T12:15:49.830",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/1122474b757a5dd8b2b50008a97f33cdb10dff6e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/130c61c516cd0684282a8f6ab163281d60642fc5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/1fe6015aa92cc0dfd875c1d3c7c1750a1b0767d9"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4c7f9d2e413dc06a157c4e5dccde84aaf4655eb3"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b4b4f17aa46c025da77aed5133b08971959c9684"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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