VulnerabilityPublished 28 Oct 2026

CVE-2026-99215: Linux kernel · power: supply: core: prevent unregistering a power supply while a callback runs

Source GCVE Database

Authoritative record:CVE-2026-99215

Not known to be exploited · fixed in 45388e50d14bc161873b14b9a05d4b8b8822fca6 : patch Linux kernel soon.

Data as of 28 Oct 2026, 13:42 UTC

Severity

High

Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD

Patch: Available – fixed in 45388e50d14bc161873b14b9a05d4b8b8822fca6, 5b4bd13e0552926648a46c2c9a12a24dfaee3715, 2ac0256a28e15c4888fa394d1fe66cf7b1d58090

Exploitation evidence

Disclosed: evidence found.
CVE published 28 Oct 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.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

ghsa-5qv3-9727-cwhm

What to do

Upgrade Linux kernel to 45388e50d14bc161873b14b9a05d4b8b8822fca6, 5b4bd13e0552926648a46c2c9a12a24dfaee3715 or 2ac0256a28e15c4888fa394d1fe66cf7b1d58090.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ bc1540561c9ede1efb6d7bf44804676d3d02a3cc, < 45388e50d14bc161873b14b9a05d4b8b8822fca6	Fixed in 45388e50d14bc161873b14b9a05d4b8b8822fca6
LinuxLinux	Affected ≥ bc1540561c9ede1efb6d7bf44804676d3d02a3cc, < 5b4bd13e0552926648a46c2c9a12a24dfaee3715	Fixed in 5b4bd13e0552926648a46c2c9a12a24dfaee3715
LinuxLinux	Affected ≥ bc1540561c9ede1efb6d7bf44804676d3d02a3cc, < 2ac0256a28e15c4888fa394d1fe66cf7b1d58090	Fixed in 2ac0256a28e15c4888fa394d1fe66cf7b1d58090
LinuxLinux	Affected =4.1	Fixed in–
Red Hatredhat/kernel`pkg:rpm/redhat/kernel`Other threats	Affected =4.1	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 by adding synchronization to prevent unregistering a power supply device while its callback is running. Users should update to a Linux kernel version that includes this fix. No additional mitigation steps are indicated beyond applying the official patch.

Description

CVE-2026-99215 is a use-after-free vulnerability in the Linux kernel's power supply core subsystem. It occurs when a power supply device is unregistered while a callback related to that power supply is still executing, potentially leading to kernel crashes. The issue arises because callbacks can run immediately after registration and may still be running during unregistration, causing freed driver data to be accessed. This vulnerability has been addressed by adding synchronization to prevent unregistration while callbacks are active.

References

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