usb: typec: tipd: fix uninitialized typec_partner_desc in cd321x_update_work()
In the Linux kernel, the following vulnerability has been resolved: usb: typec: tipd: fix uninitialized typec_partner_desc in cd321x_update_work() cd321x_update_work() passes a stack-allocated typec_partner_desc to typec_register_partner() after initializing only usb_pd, accessory and identity. typec_register_partner() copies attach and deattach from the descriptor into the partner. With those fields left unset, garbage function pointers may be stored and later invoked from typec_partner_link_device() when a USB device is linked to the port. Uninitialized pd_revision and usb_capability similarly leak stack data through partner sysfs. Zero-initialize the descriptor so optional callbacks remain NULL and the remaining fields are zero.
CVE-2026-98759
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-2026-98759
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": "82432bbfb9e83b7e81d04660fe129b99a29b2ac2",
"lessThan": "75dc6cb377efd2f4428b7f76d3a590a0bbc10399",
"versionType": "git"
},
{
"status": "affected",
"version": "82432bbfb9e83b7e81d04660fe129b99a29b2ac2",
"lessThan": "5414144e202a32437e3eb436cd3f5f00d79ad86e",
"versionType": "git"
},
{
"status": "affected",
"version": "82432bbfb9e83b7e81d04660fe129b99a29b2ac2",
"lessThan": "88c7e458af53ff781a3f1051708395892b325576",
"versionType": "git"
}
],
"programFiles": [
"drivers/usb/typec/tipd/core.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.18"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.18",
"versionType": "semver"
},
{
"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/typec/tipd/core.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98759
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #38712 · Revision 1
- Added to Heist Feed
- Publisher date