CVE-2026-89466power: supply: qcom_battmgr: terminate the strings from firmware
- 7.7HighCVSS base score
- 0.14%Exploitation in 30 daysEPSS · top 96% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Linux
Published
- 38 days later
· 38 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.7 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
| NVDNVD · Received | 3.1 | High7.7 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.14% · top 96% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.7.
Affected products
- affected 29e8142b5623b5949587bcc4f591c4e6595c4aca – < c06028db620854b11ad81b04b0a4e1ead930cb76
- affected 29e8142b5623b5949587bcc4f591c4e6595c4aca – < 0e70a9b0d16acf7adebc4f386178a95da27c0027
- affected 29e8142b5623b5949587bcc4f591c4e6595c4aca – < ee053561e21ce1e1741dd64ca5ddcdb92e40edc1
- affected 29e8142b5623b5949587bcc4f591c4e6595c4aca – < 6cc6c28c9ab6e8ecf901397717a5b391b828cdaf
- affected 29e8142b5623b5949587bcc4f591c4e6595c4aca – < ab1112df8f4ffa88cb024dd370c432ced80f77d8
- affected 6.3
- unaffected < 6.3
- unaffected 6.6.157 – ≤ 6.6.*
- unaffected 6.12.109 – ≤ 6.12.*
- unaffected 6.18.50 – ≤ 6.18.*
- unaffected 7.2.4 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References5
- https://git.kernel.org/stable/c/c06028db620854b11ad81b04b0a4e1ead930cb76 (opens in a new tab)
- https://git.kernel.org/stable/c/0e70a9b0d16acf7adebc4f386178a95da27c0027 (opens in a new tab)
- https://git.kernel.org/stable/c/ee053561e21ce1e1741dd64ca5ddcdb92e40edc1 (opens in a new tab)
- https://git.kernel.org/stable/c/6cc6c28c9ab6e8ecf901397717a5b391b828cdaf (opens in a new tab)
- https://git.kernel.org/stable/c/ab1112df8f4ffa88cb024dd370c432ced80f77d8 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-76372 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-89466)Record last updated .