CVE-2026-89466power: supply: qcom_battmgr: terminate the strings from firmware
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.7 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 29e8142b5623b5949587bcc4f591c4e6595c4aca before c06028db620854b11ad81b04b0a4e1ead930cb76; 29e8142b5623b5949587bcc4f591c4e6595c4aca builds before 0e70a9b0d16acf7adebc4f386178a95da27c0027; from 29e8142b5623b5949587bcc4f591c4e6595c4aca before ee053561e21ce1e1741dd64ca5ddcdb92e40edc1; 29e8142b5623b5949587bcc4f591c4e6595c4aca builds before 6cc6c28c9ab6e8ecf901397717a5b391b828cdaf; from 29e8142b5623b5949587bcc4f591c4e6595c4aca before ab1112df8f4ffa88cb024dd370c432ced80f77d8 | CNA record |
References
- https://git.kernel.org/stable/c/c06028db620854b11ad81b04b0a4e1ead930cb76
- https://git.kernel.org/stable/c/0e70a9b0d16acf7adebc4f386178a95da27c0027
- https://git.kernel.org/stable/c/ee053561e21ce1e1741dd64ca5ddcdb92e40edc1
- https://git.kernel.org/stable/c/6cc6c28c9ab6e8ecf901397717a5b391b828cdaf
- https://git.kernel.org/stable/c/ab1112df8f4ffa88cb024dd370c432ced80f77d8
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.