CVE-2024-27412 power: supply: bq27xxx-i2c: Do not free non existing IRQ

2024-05-1711:50:50

Linux

github.com

linux kernel

power supply

bq27xxx-i2c

vulnerability

irq

backtrace

fix

6.7 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

13.1%

JSON

In the Linux kernel, the following vulnerability has been resolved:

power: supply: bq27xxx-i2c: Do not free non existing IRQ

The bq27xxx i2c-client may not have an IRQ, in which case
client->irq will be 0. bq27xxx_battery_i2c_probe() already has
an if (client->irq) check wrapping the request_threaded_irq().

But bq27xxx_battery_i2c_remove() unconditionally calls
free_irq(client->irq) leading to:

[ 190.310742] ------------[ cut here ]------------
[ 190.310843] Trying to free already-free IRQ 0
[ 190.310861] WARNING: CPU: 2 PID: 1304 at kernel/irq/manage.c:1893 free_irq+0x1b8/0x310

Followed by a backtrace when unbinding the driver. Add
an if (client->irq) to bq27xxx_battery_i2c_remove() mirroring
probe() to fix this.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/power/supply/bq27xxx_battery_i2c.c"
    ],
    "versions": [
      {
        "version": "76d2ed844def",
        "lessThan": "d4d813c0a14d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "dafe9136be7b",
        "lessThan": "7394abc8926a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da9a4b55a66",
        "lessThan": "d7acc4a569f5",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "e01820a94aea",
        "lessThan": "e601ae81910c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "e65fee45687f",
        "lessThan": "cefe18e9ec84",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "444ff00734f3",
        "lessThan": "fbca8bae1ba7",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "444ff00734f3",
        "lessThan": "083686474e7c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "444ff00734f3",
        "lessThan": "2df70149e73e",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/power/supply/bq27xxx_battery_i2c.c"
    ],
    "versions": [
      {
        "version": "6.4",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.4",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "4.19.309",
        "lessThanOrEqual": "4.19.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.4.271",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.212",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.151",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.81",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.21",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.7.9",
        "lessThanOrEqual": "6.7.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.8",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]