usb: typec: ucsi: Handle incorrect num_connectors capability
In the Linux kernel, the following vulnerability has been resolved: usb: typec: ucsi: Handle incorrect num_connectors capability The UCSI spec states that the num_connectors field is 7 bits, and the 8th bit is reserved and should be set to zero. Some buggy FW has been known to set this bit, and it can lead to a system not booting. Flag that the FW is not behaving correctly, and auto-fix the value so that the system boots correctly. Found on Lenovo P1 G8 during Linux enablement program. The FW will be fixed, but seemed worth addressing in case it hit platforms that aren't officially Linux supported.
CVE-2025-71108
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-2025-71108
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": "c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f",
"lessThan": "07c8d2a109d847775b3b4e2c3294c8e1eea75432",
"versionType": "git"
},
{
"status": "affected",
"version": "c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f",
"lessThan": "58941bbb0050e365a98c64f1fc4a9a0ac127dba6",
"versionType": "git"
},
{
"status": "affected",
"version": "c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f",
"lessThan": "f72f97d0aee4a993a35f2496bca5efd24827235d",
"versionType": "git"
},
{
"status": "affected",
"version": "c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f",
"lessThan": "914605b0de8128434eafc9582445306830748b93",
"versionType": "git"
},
{
"status": "affected",
"version": "c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f",
"lessThan": "3042a57a8e8bce4a3100c3f6f03dc372aab24943",
"versionType": "git"
},
{
"status": "affected",
"version": "c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f",
"lessThan": "132fe187e0d940f388f839fe2cde9b84106ad20d",
"versionType": "git"
},
{
"status": "affected",
"version": "c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f",
"lessThan": "30cd2cb1abf4c4acdb1ddb468c946f68939819fb",
"versionType": "git"
}
],
"programFiles": [
"drivers/usb/typec/ucsi/ucsi.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.13"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.13",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.248",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"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": "6.18.3",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/usb/typec/ucsi/ucsi.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-71108
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #39155 · Revision 1
- Added to Heist Feed
- Publisher date