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Vulnerability · CVE-2026-46270

In the Linux kernel, the following vulnerability has been resolved: power: supply: rt9455: Fix use-after-free in power_supply_changed() Using the variant for requestin…

Published Jun 3, 2026 · corrected/updated Jul 22, 2026 · linux linux kernel · evidence confidence medium

In the Linux kernel, the following vulnerability has been resolved: power: supply: rt9455: Fix use-after-free in power_supply_changed() Using the variant for requesting IRQ _before_ the variant for allocating/registering the handle, means that the handle will be deallocated/unregistered _before_ the interrupt handler (since naturally deallocates in reverse allocation order). This means that during removal, there is a race condition where an interrupt can fire just _after_ the handle has been freed, *but* just _before_ the corresponding unregistration of the IRQ handler has run. This will lead to the IRQ handler calling with a freed handle. Which usually crashes the system or otherwise silently corrupts the memory... Note that there is a similar situation which can also happen during ; the possibility of an interrupt firing _before_ registering the handle. This would then lead to the nasty situation of using the handle *uninitialized* in . Fix this racy use-after-free by making sure the IRQ is requested _after_ the registration of the handle.

Grounded briefings

Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.

Executive

CVE-2026-46270 is a high public vulnerability record for linux linux kernel. It is not currently listed in the CISA Known Exploited catalog. Check the linked vendor or CERT advisories for patch status. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.

System administrator

Identify whether linux linux kernel is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: linux/linux kernel. Check the linked vendor or CERT advisories for patch status. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.

Security analyst

Signals on file: CVSS 8.4. It is not currently listed in the CISA Known Exploited catalog. Weakness classes: CWE-416. Sources contributing to this record: nvd. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.

Exploitation and remediation

  • Exploitation evidence

    Not listed as known exploited in CISA KEV. Not in CISA KEV or VulnCheck KEV.

  • Patch and remediation

    No required-action text is stored yet. Use the vendor or CERT links in Sources for patch availability.

  • Safe detection guidance

    Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 3, 2026 · NIST NVD

    Detected

    In the Linux kernel, the following vulnerability has been resolved: power: supply: rt9455: Fix use-after-free in power_supply_changed() Using the variant for requesting IRQ _before_ the variant for allocating/registering the handle, means that the handle will be deallocated/unregistered _before_ the interrupt handler (since naturally deallocates in reverse allocation order). This means that during

  2. Jul 22, 2026 · NIST NVD

    Updated

    In the Linux kernel, the following vulnerability has been resolved: power: supply: rt9455: Fix use-after-free in power_supply_changed() Using the variant for requesting IRQ _before_ the variant for allocating/registering the handle, means that the handle will be deallocated/unregistered _before_ the interrupt handler (since naturally deallocates in reverse allocation order). This means that during

Affected

  • cpe linux/linux kernelversion unspecified

Sources

  • NIST NVDVulnerability recordCVE-2026-46270

    In the Linux kernel, the following vulnerability has been resolved: power: supply: rt9455: Fix use-after-free in power_supply_changed() Using the variant for requesting IRQ _before_ the variant for allocating/registering the handle, means that the

    nvd.nist.gov

References