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power: supply: bq256xx: drain usb_work before freeing the charger

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: power: supply: bq256xx: drain usb_work before freeing the charger The USB-PHY notifier queues usb_work, whose handler calls power_supply_changed(bq->charger). The reset devm action only unregisters the notifier and was registered before the power supplies, so devm frees bq->charger on unwind before the action runs; a usb_work still queued can then dereference it. Register the reset action after the power supplies, so it unregisters the notifiers and drains usb_work before the supplies are released. Initialize usb_work and obtain the PHY references before registering the notifiers, so the worker cannot run before the supplies exist. Found by static analysis.

Announced Group revision 1
Original source ↗

CVE-2026-89474

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-89474

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "32e4978bb920d047fe5de3ea42d176f267c01f63",
        "lessThan": "9dcfdf6c598301b278f0b3490eb2bf4f600524e2",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "32e4978bb920d047fe5de3ea42d176f267c01f63",
        "lessThan": "fd08d4dbbec07a44f01b0ddb041912be0dc88f8c",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "32e4978bb920d047fe5de3ea42d176f267c01f63",
        "lessThan": "2cfb59dc9df8b5ebdd95e3d874a7f4690cee2bc8",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "32e4978bb920d047fe5de3ea42d176f267c01f63",
        "lessThan": "9a467bd1e6811011026ad4c8de701b940d88a00c",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "32e4978bb920d047fe5de3ea42d176f267c01f63",
        "lessThan": "9e1aba34df9a87d53460888e05718717c0f69343",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "32e4978bb920d047fe5de3ea42d176f267c01f63",
        "lessThan": "c8addb842ae8dcf69c15fc976e33e3bd538a41d7",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "32e4978bb920d047fe5de3ea42d176f267c01f63",
        "lessThan": "2dd6cd823777bea6d9a880a12a92a73ec76aee0b",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/power/supply/bq256xx_charger.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.12"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.12",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.15.221",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.188",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.157",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.109",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.50",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.4",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/power/supply/bq256xx_charger.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-89474

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#35002 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. CVE-2026-89474 · Revision 1Source updated