USB: hub: Ignore non-compliant devices with too many configs or interfaces
In the Linux kernel, the following vulnerability has been resolved: USB: hub: Ignore non-compliant devices with too many configs or interfaces Robert Morris created a test program which can cause usb_hub_to_struct_hub() to dereference a NULL or inappropriate pointer: Oops: general protection fault, probably for non-canonical address 0xcccccccccccccccc: 0000 [#1] SMP DEBUG_PAGEALLOC PTI CPU: 7 UID: 0 PID: 117 Comm: kworker/7:1 Not tainted 6.13.0-rc3-00017-gf44d154d6e3d #14 Hardware name: FreeBSD BHYVE/BHYVE, BIOS 14.0 10/17/2021 Workqueue: usb_hub_wq hub_event RIP: 0010:usb_hub_adjust_deviceremovable+0x78/0x110 ... Call Trace: ? die_addr+0x31/0x80 ? exc_general_protection+0x1b4/0x3c0 ? asm_exc_general_protection+0x26/0x30 ? usb_hub_adjust_deviceremovable+0x78/0x110 hub_probe+0x7c7/0xab0 usb_probe_interface+0x14b/0x350 really_probe+0xd0/0x2d0 ? __pfx___device_attach_driver+0x10/0x10 __driver_probe_device+0x6e/0x110 driver_probe_device+0x1a/0x90 __device_attach_driver+0x7e/0xc0 bus_for_each_drv+0x7f/0xd0 __device_attach+0xaa/0x1a0 bus_probe_device+0x8b/0xa0 device_add+0x62e/0x810 usb_set_configuration+0x65d/0x990 usb_generic_driver_probe+0x4b/0x70 usb_probe_device+0x36/0xd0 The cause of this error is that the device has two interfaces, and the hub driver binds to interface 1 instead of interface 0, which is where usb_hub_to_struct_hub() looks. We can prevent the problem from occurring by refusing to accept hub devices that violate the USB spec by having more than one configurati
CVE-2025-21776
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2025-21776
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "d2123fd9e1a56b8006986ed37e0aaf93ef0dd978",
"lessThan": "49f077106fa07919a6a6dda99bb490dd1d1a8218",
"versionType": "git"
},
{
"status": "affected",
"version": "d2123fd9e1a56b8006986ed37e0aaf93ef0dd978",
"lessThan": "d343fe0fad5c1d689775f2dda24a85ce98e29566",
"versionType": "git"
},
{
"status": "affected",
"version": "d2123fd9e1a56b8006986ed37e0aaf93ef0dd978",
"lessThan": "d3a67adb365cdfdac4620daf38a82e57ca45806c",
"versionType": "git"
},
{
"status": "affected",
"version": "d2123fd9e1a56b8006986ed37e0aaf93ef0dd978",
"lessThan": "c3720b04df84b5459050ae4e03ec7d545652f897",
"versionType": "git"
},
{
"status": "affected",
"version": "d2123fd9e1a56b8006986ed37e0aaf93ef0dd978",
"lessThan": "e905a0fca7bff0855d312c16f71e60e1773b393e",
"versionType": "git"
},
{
"status": "affected",
"version": "d2123fd9e1a56b8006986ed37e0aaf93ef0dd978",
"lessThan": "62d8f4c5454dd39aded4f343720d1c5a1803cfef",
"versionType": "git"
},
{
"status": "affected",
"version": "d2123fd9e1a56b8006986ed37e0aaf93ef0dd978",
"lessThan": "5b9778e1fe715700993ce436c152dc3b7df0b490",
"versionType": "git"
},
{
"status": "affected",
"version": "d2123fd9e1a56b8006986ed37e0aaf93ef0dd978",
"lessThan": "2240fed37afbcdb5e8b627bc7ad986891100e05d",
"versionType": "git"
}
],
"programFiles": [
"drivers/usb/core/hub.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.9"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.9",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.4.291",
"versionType": "semver",
"lessThanOrEqual": "5.4.*"
},
{
"status": "unaffected",
"version": "5.10.235",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.179",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.129",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.79",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.16",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.13.4",
"versionType": "semver",
"lessThanOrEqual": "6.13.*"
},
{
"status": "unaffected",
"version": "6.14",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/usb/core/hub.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-21776
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #26941 · Revision 1
- Added to Heist Feed
- Publisher date