usb: gadget: f_hid: don't call cdev_init while cdev in use
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_hid: don't call cdev_init while cdev in use When calling unbind, then bind again, cdev_init reinitialized the cdev, even though there may still be references to it. That's the case when the /dev/hidg* device is still opened. This obviously unsafe behavior like oopes. This fixes this by using cdev_alloc to put the cdev on the heap. That way, we can simply allocate a new one in hidg_bind.
CVE-2026-31606
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-2026-31606
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": "cb382536052fcc7713988869b54a81137069e5a9",
"lessThan": "3aa77f5da0ecb00895411f4246d8a3e4db0343c2",
"versionType": "git"
},
{
"status": "affected",
"version": "cb382536052fcc7713988869b54a81137069e5a9",
"lessThan": "c6c0d13db5d0f8d465eabc14bd23d2b6a7247a43",
"versionType": "git"
},
{
"status": "affected",
"version": "cb382536052fcc7713988869b54a81137069e5a9",
"lessThan": "eb6ef6185f2054a341ec70d7e2165f5381744215",
"versionType": "git"
},
{
"status": "affected",
"version": "cb382536052fcc7713988869b54a81137069e5a9",
"lessThan": "5a229016ca3ac551294ec59770be9da94ec4bf63",
"versionType": "git"
},
{
"status": "affected",
"version": "cb382536052fcc7713988869b54a81137069e5a9",
"lessThan": "75ecc46828ec377dd5692c677168ef6d64fd7123",
"versionType": "git"
},
{
"status": "affected",
"version": "cb382536052fcc7713988869b54a81137069e5a9",
"lessThan": "81ebd43cc0d6d106ce7b6ccbf7b5e40ca7f5503d",
"versionType": "git"
}
],
"programFiles": [
"drivers/usb/gadget/function/f_hid.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.19"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.19",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.83",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.24",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19.14",
"versionType": "semver",
"lessThanOrEqual": "6.19.*"
},
{
"status": "unaffected",
"version": "7.0.1",
"versionType": "semver",
"lessThanOrEqual": "7.0.*"
},
{
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/usb/gadget/function/f_hid.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-31606
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #46233 · Revision 1
- Added to Heist Feed
- Publisher date