power: supply: qcom_battmgr: terminate the strings from firmware

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-89466
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-11 20:19:27 UTC
Updated2026-09-11 20:19:27 UTC
DescriptionIn 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.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 29e8142b5623b5949587bcc4f591c4e6595c4aca 0e70a9b0d16acf7adebc4f386178a95da27c0027 git Not specified
CNA Linux Linux affected 29e8142b5623b5949587bcc4f591c4e6595c4aca ee053561e21ce1e1741dd64ca5ddcdb92e40edc1 git Not specified
CNA Linux Linux affected 29e8142b5623b5949587bcc4f591c4e6595c4aca 6cc6c28c9ab6e8ecf901397717a5b391b828cdaf git Not specified
CNA Linux Linux affected 29e8142b5623b5949587bcc4f591c4e6595c4aca ab1112df8f4ffa88cb024dd370c432ced80f77d8 git Not specified
CNA Linux Linux affected 6.3 Not specified
CNA Linux Linux unaffected 6.3 semver Not specified
CNA Linux Linux unaffected 6.12.109 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.50 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.4 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/6cc6c28c9ab6e8ecf901397717a5b391b828cdaf 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/ee053561e21ce1e1741dd64ca5ddcdb92e40edc1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/ab1112df8f4ffa88cb024dd370c432ced80f77d8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/0e70a9b0d16acf7adebc4f386178a95da27c0027 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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