power: supply: qcom_battmgr: terminate the strings from firmware
In the Linux kernel, the following vulnerability has been resolved: power: supply: qcom_battmgr: terminate the strings from firmware The qcom_battmgr_sc8280xp_strcpy() takes a Pascal-style string when the firmware sends one. Otherwise it copies all BATTMGR_STRING_LEN bytes and leaves the destination without a terminator. Those destinations are model_number, serial_number and oem_info, each BATTMGR_STRING_LEN and declared next to each other. They go out to user space as val->strval, which power_supply_format_property() prints with "%s", so a firmware string that fills the whole field makes that read run into the following members. Use strscpy() so the copy always terminates, the way the SM8350 path already does for the same field.
CVE-2026-89466
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-2026-89466
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": "29e8142b5623b5949587bcc4f591c4e6595c4aca",
"lessThan": "c06028db620854b11ad81b04b0a4e1ead930cb76",
"versionType": "git"
},
{
"status": "affected",
"version": "29e8142b5623b5949587bcc4f591c4e6595c4aca",
"lessThan": "0e70a9b0d16acf7adebc4f386178a95da27c0027",
"versionType": "git"
},
{
"status": "affected",
"version": "29e8142b5623b5949587bcc4f591c4e6595c4aca",
"lessThan": "ee053561e21ce1e1741dd64ca5ddcdb92e40edc1",
"versionType": "git"
},
{
"status": "affected",
"version": "29e8142b5623b5949587bcc4f591c4e6595c4aca",
"lessThan": "6cc6c28c9ab6e8ecf901397717a5b391b828cdaf",
"versionType": "git"
},
{
"status": "affected",
"version": "29e8142b5623b5949587bcc4f591c4e6595c4aca",
"lessThan": "ab1112df8f4ffa88cb024dd370c432ced80f77d8",
"versionType": "git"
}
],
"programFiles": [
"drivers/power/supply/qcom_battmgr.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.3"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.3",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.109",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.50",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.4",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/power/supply/qcom_battmgr.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-89466
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #34998 · Revision 1
- Added to Heist Feed
- Publisher date