USB: serial: fix port tear down use-after-free
In the Linux kernel, the following vulnerability has been resolved: USB: serial: fix port tear down use-after-free Some drivers for multiport devices access port driver data from completion handlers of shared URBs submitted at attach() or first open() and stopped at disconnect() or last close(), respectively. A simple NULL check before accessing the driver data makes sure that a port state container has at least been allocated, but a completion handler can still race with port tear down. Reorder the disconnect handling so that ports are not deregistered (and their driver data freed) until after all ports have been hung up and the driver disconnect() callback has run so that all I/O has been stopped.
CVE-2026-98772
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-2026-98772
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": "2d93148ab6988cad872e65d694c95e8944e1b626",
"lessThan": "e4a6883ad9b4686a5f4bd90ff55a44d7ab65bd3c",
"versionType": "git"
},
{
"status": "affected",
"version": "2d93148ab6988cad872e65d694c95e8944e1b626",
"lessThan": "60cc9379c3e650d1ebfba4de63f1242537a62a32",
"versionType": "git"
},
{
"status": "affected",
"version": "2d93148ab6988cad872e65d694c95e8944e1b626",
"lessThan": "5e8980a81af195c49084be5b4c031085b56c7443",
"versionType": "git"
},
{
"status": "affected",
"version": "2d93148ab6988cad872e65d694c95e8944e1b626",
"lessThan": "e80ee74206f260eb1282e7d1339ff146a4a410d0",
"versionType": "git"
},
{
"status": "affected",
"version": "2d93148ab6988cad872e65d694c95e8944e1b626",
"lessThan": "33c920f7c5952dfc42d1b8ea6efe16b1f0bb0c5b",
"versionType": "git"
}
],
"programFiles": [
"drivers/usb/serial/usb-serial.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.30"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.30",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.113",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.56",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.10",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/usb/serial/usb-serial.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98772
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #48967 · Revision 1
- Added to Heist Feed
- Publisher date