power: supply: max17040: propagate register read errors
In the Linux kernel, the following vulnerability has been resolved: power: supply: max17040: propagate register read errors max17040_get_vcell() and max17040_get_soc() ignore errors returned by regmap_read(). When an I2C transfer fails, the uninitialized register value is converted and reported to userspace as a valid voltage or state of charge. The polling worker can also replace the cached state of charge with the bogus value and emit a spurious change event. Propagate read errors through the power supply get_property callback and keep the last valid cached state of charge when polling fails.
CVE-2026-89462
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-2026-89462
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": "c6f4a42de60b981dd210de01cd3e575835e3158e",
"lessThan": "bcdcbef9c5e69a1e79c6b9f6a3434da2f68724ed",
"versionType": "git"
},
{
"status": "affected",
"version": "c6f4a42de60b981dd210de01cd3e575835e3158e",
"lessThan": "2943a0edd4865ed744702ada647921c3981207f6",
"versionType": "git"
},
{
"status": "affected",
"version": "c6f4a42de60b981dd210de01cd3e575835e3158e",
"lessThan": "13fb0477da9b400071b9d518b24d6434c4965263",
"versionType": "git"
},
{
"status": "affected",
"version": "c6f4a42de60b981dd210de01cd3e575835e3158e",
"lessThan": "c7aa4c3708cc0d8487336f8281665eaea87130f6",
"versionType": "git"
},
{
"status": "affected",
"version": "c6f4a42de60b981dd210de01cd3e575835e3158e",
"lessThan": "659cc3d8d5ef246263873fce72c8cadeeed073cc",
"versionType": "git"
}
],
"programFiles": [
"drivers/power/supply/max17040_battery.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.31"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.31",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"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/max17040_battery.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-89462
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #46661 · Revision 1
- Added to Heist Feed
- Publisher date