DEBIAN-CVE-2023-53166

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Source
https://security-tracker.debian.org/tracker/CVE-2023-53166
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-53166.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2023-53166
Upstream
Published
2025-09-15T14:15:38.343Z
Modified
2025-11-25T11:15:42.888040Z
Severity
  • 4.7 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

In the Linux kernel, the following vulnerability has been resolved: power: supply: bq25890: Fix externalpowerchanged race bq25890chargerexternalpowerchanged() dereferences bq->charger, which gets sets in bq25890powersupplyinit() like this: bq->charger = devmpowersupplyregister(bq->dev, &bq->desc, &psycfg); As soon as devmpowersupplyregister() has called deviceadd() the externalpowerchanged callback can get called. So there is a window where bq25890chargerexternalpowerchanged() may get called while bq->charger has not been set yet leading to a NULL pointer dereference. This race hits during boot sometimes on a Lenovo Yoga Book 1 yb1-x90f when the chtwcovepwrsrc (extcon) powersupply is done with detecting the connected charger-type which happens to exactly hit the small window: BUG: kernel NULL pointer dereference, address: 0000000000000018 <snip> RIP: 0010:_powersupplyissuppliedby+0xb/0xb0 <snip> Call Trace: <TASK> _powersupplygetsupplierproperty+0x19/0x50 classforeachdevice+0xb1/0xe0 powersupplygetpropertyfromsupplier+0x2e/0x50 bq25890chargerexternalpowerchanged+0x38/0x1b0 [bq25890charger] _powersupplychangedwork+0x30/0x40 classforeachdevice+0xb1/0xe0 powersupplychangedwork+0x5f/0xe0 <snip> Fixing this is easy. The externalpowerchanged callback gets passed the powersupply which will eventually get stored in bq->charger, so bq25890chargerexternalpowerchanged() can simply directly use the passed in psy argument which is always valid.

References

Affected packages

Debian:12 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.1.37-1

Affected versions

6.*

6.1.27-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.3.7-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.3.7-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}