ghsa-hj96-v5c9-949r
Vulnerability from github
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.
{
"affected": [],
"aliases": [
"CVE-2023-53475"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-10-01T12:15:49Z",
"severity": null
},
"details": "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": "GHSA-hj96-v5c9-949r",
"modified": "2025-10-01T12:30:30Z",
"published": "2025-10-01T12:30:30Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53475"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1122474b757a5dd8b2b50008a97f33cdb10dff6e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/130c61c516cd0684282a8f6ab163281d60642fc5"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1fe6015aa92cc0dfd875c1d3c7c1750a1b0767d9"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4c7f9d2e413dc06a157c4e5dccde84aaf4655eb3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b4b4f17aa46c025da77aed5133b08971959c9684"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.