Bluetooth: btusb: revert use of devm_kzalloc in btusb
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btusb: revert use of devm_kzalloc in btusb This reverts commit 98921dbd00c4e ("Bluetooth: Use devm_kzalloc in btusb.c file"). In btusb_probe(), we use devm_kzalloc() to allocate the btusb data. This ties the lifetime of all the btusb data to the binding of a driver to one interface, INTF. In a driver that binds to other interfaces, ISOC and DIAG, this is an accident waiting to happen. The issue is revealed in btusb_disconnect(), where calling usb_driver_release_interface(&btusb_driver, data->intf) will have devm free the data that is also being used by the other interfaces of the driver that may not be released yet. To fix this, revert the use of devm and go back to freeing memory explicitly.
CVE-2025-71082
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-2025-71082
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": "98921dbd00c4e2e4bdd56423cb5edf98d57b45f7",
"lessThan": "fff9206b0907252a41eb12b7c1407b9347df18b1",
"versionType": "git"
},
{
"status": "affected",
"version": "98921dbd00c4e2e4bdd56423cb5edf98d57b45f7",
"lessThan": "cca0e9206e3bcc63cd3e72193e60149165d493cc",
"versionType": "git"
},
{
"status": "affected",
"version": "98921dbd00c4e2e4bdd56423cb5edf98d57b45f7",
"lessThan": "c0ecb3e4451fe94f4315e6d09c4046dfbc42090b",
"versionType": "git"
},
{
"status": "affected",
"version": "98921dbd00c4e2e4bdd56423cb5edf98d57b45f7",
"lessThan": "1e54c19eaf84ba652c4e376571093e58e144b339",
"versionType": "git"
},
{
"status": "affected",
"version": "98921dbd00c4e2e4bdd56423cb5edf98d57b45f7",
"lessThan": "fdf7c640fb8a44a59b0671143d8c2f738bc48003",
"versionType": "git"
},
{
"status": "affected",
"version": "98921dbd00c4e2e4bdd56423cb5edf98d57b45f7",
"lessThan": "252714f1e8bdd542025b16321c790458014d6880",
"versionType": "git"
}
],
"programFiles": [
"drivers/bluetooth/btusb.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.7"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.7",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.15.198",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.160",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.120",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.64",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.4",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/bluetooth/btusb.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-71082
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #39140 · Revision 1
- Added to Heist Feed
- Publisher date