CVE-2026-89474: power: supply: bq256xx: drain usb_work before freeing the charger

Received
AliasesUBUNTU-CVE-2026-89474DEBIAN-CVE-2026-89474
Published 11-09-2026Last modified 19-10-2026

Vulnerability summary

CVE-2026-89474 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 6.3% of scored vulnerabilities.

Overall risk
0/100
0100
Minimal · default modelHow is this calculated?
CVSS score
Not scored
010
No CVSS score recorded
EPSS score
0.17%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
OPENSUSE-SU-2026:11880-1

Timeline

  1. 11-09-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.17%

Chance of exploitation in the next 30 days

Percentile

6%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.17% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu157 products
  • linuxAll versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
  • linuxAll versions (No fix recorded) | < 6.1.190-1 | < 6.12.111-1 | < 7.2.6-1
  • linux-6.12< 6.12.111-1~deb12u1
Linux1 product
  • linux≥ 32e4978bb920d047fe5de3ea42d176f267c01f63, < 9dcfdf6c598301b278f0b3490eb2bf4f600524e2 | ≥ 32e4978bb920d047fe5de3ea42d176f267c01f63, < fd08d4dbbec07a44f01b0ddb041912be0dc88f8c | ≥ 32e4978bb920d047fe5de3ea42d176f267c01f63, < 2cfb59dc9df8b5ebdd95e3d874a7f4690cee2bc8 | ≥ 32e4978bb920d047fe5de3ea42d176f267c01f63, < 9a467bd1e6811011026ad4c8de701b940d88a00c | ≥ 32e4978bb920d047fe5de3ea42d176f267c01f63, < 9e1aba34df9a87d53460888e05718717c0f69343 | ≥ 32e4978bb920d047fe5de3ea42d176f267c01f63, < c8addb842ae8dcf69c15fc976e33e3bd538a41d7 | ≥ 32e4978bb920d047fe5de3ea42d176f267c01f63, < 2dd6cd823777bea6d9a880a12a92a73ec76aee0b | 5.12

3 vendors · 160 products

References

11 links
Show all 11 references