CVE-2026-80711: Linux kernel · power: supply: max17040: handle missing status supplier
Affects Linux kernelSource GCVE Database
Not known to be exploited · CVSS 2.0 Low.
Data as of 26 Oct 2026, 17:16 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 4% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 28 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.04 LTSlinuxpkg:deb/ubuntu/linux?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gkepkg:deb/ubuntu/linux-gke?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A fix has been implemented in the Linux kernel to handle missing status suppliers correctly by returning POWER_SUPPLY_STATUS_UNKNOWN and propagating errors. Users should update to a kernel version that includes this fix. No additional mitigation is required.
Description
In the Linux kernel, the following vulnerability has been resolved: power: supply: max17040: handle missing status supplier MAX17040 does not report charger state itself, so the driver forwards POWER_SUPPLY_PROP_STATUS to a supplier power supply. If no supplier is registered, power_supply_get_property_from_supplier() returns -ENODEV and leaves the output value untouched. max17040_get_property() currently ignores that error and returns success, so userspace can read an uninitialized status value from the battery power supply. This happens on systems that use the fuel gauge without a charger supplier relationship in firmware. Return POWER_SUPPLY_STATUS_UNKNOWN when no supplier provides STATUS, and propagate other supplier lookup errors.
References
- nvd.nist.gov/vuln/detail/CVE-2026-80711 (opens in a new tab)
- git.kernel.org/stable/c/725668c6b6aa3971fe850659102c250d0d676e18 (opens in a new tab)
- git.kernel.org/stable/c/91ac995a6f4ddf4f92b231b080544abf23a9b871 (opens in a new tab)
- git.kernel.org/stable/c/b039f13e095d28a64ca6b21d0ee5440d8b048f37 (opens in a new tab)
- git.kernel.org/stable/c/ee2ea0c452edc0930e7395b080dccd5a1cb965e1 (opens in a new tab)
- ubuntu.com/security/CVE-2026-80711 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-80711 (opens in a new tab)
- git.kernel.org/linus/725668c6b6aa3971fe850659102c250d0d676e18 (opens in a new tab)