CVE-2026-89466High· 7.7▾ TwilightIn 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 …
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 42.4 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 12.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.2%
— → 3.3
none → low
— → 7.7
none → high
7.7 → 3.3
high → low
3.3 → 7.7
low → high
7.7 → 5.5
high → medium
0.2% → 0.2%
Last analysed / modified upstream
5.5 → 7.7
medium → high
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.
Linux >= 29e8142b5623b5949587bcc4f591c4e6595c4aca < c06028db620854b11ad81b04b0a4e1ead930cb76Linux >= 29e8142b5623b5949587bcc4f591c4e6595c4aca < 0e70a9b0d16acf7adebc4f386178a95da27c0027Linux >= 29e8142b5623b5949587bcc4f591c4e6595c4aca < ee053561e21ce1e1741dd64ca5ddcdb92e40edc1Linux >= 29e8142b5623b5949587bcc4f591c4e6595c4aca < 6cc6c28c9ab6e8ecf901397717a5b391b828cdafLinux >= 29e8142b5623b5949587bcc4f591c4e6595c4aca < ab1112df8f4ffa88cb024dd370c432ced80f77d8Linux 6.3Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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