power: supply: pm8916_bms_vm: Fix use-after-free in power_supply_changed()

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-45882
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-27 14:17:02 UTC
Updated2026-06-25 21:12:16 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: power: supply: pm8916_bms_vm: Fix use-after-free in power_supply_changed() Using the `devm_` variant for requesting IRQ _before_ the `devm_` variant for allocating/registering the `power_supply` handle, means that the `power_supply` handle will be deallocated/unregistered _before_ the interrupt handler (since `devm_` naturally deallocates in reverse allocation order). This means that during removal, there is a race condition where an interrupt can fire just _after_ the `power_supply` handle has been freed, *but* just _before_ the corresponding unregistration of the IRQ handler has run. This will lead to the IRQ handler calling `power_supply_changed()` with a freed `power_supply` handle. Which usually crashes the system or otherwise silently corrupts the memory... Note that there is a similar situation which can also happen during `probe()`; the possibility of an interrupt firing _before_ registering the `power_supply` handle. This would then lead to the nasty situation of using the `power_supply` handle *uninitialized* in `power_supply_changed()`. Fix this racy use-after-free by making sure the IRQ is requested _after_ the registration of the `power_supply` handle.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.000180000 probability, percentile 0.048460000 (date 2026-06-01)

Problem Types: CWE-416

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 098bce1838e0549228c8d426e5de72ec5594b5c4 b69bb88e20c6f8e998dff3e13a316207f49d3fa2 git Not specified
CNA Linux Linux affected 098bce1838e0549228c8d426e5de72ec5594b5c4 a8b7117ae3a791c6a328674d05a06cd45d8241bd git Not specified
CNA Linux Linux affected 098bce1838e0549228c8d426e5de72ec5594b5c4 17db6b3abd823c9fba3f3413c4f0f432d99d49dc git Not specified
CNA Linux Linux affected 098bce1838e0549228c8d426e5de72ec5594b5c4 62914959b35e9a1e29cc0f64cb8cfc5075a5366f git Not specified
CNA Linux Linux affected 6.7 Not specified
CNA Linux Linux unaffected 6.7 semver Not specified
CNA Linux Linux unaffected 6.12.75 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.14 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.4 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/17db6b3abd823c9fba3f3413c4f0f432d99d49dc 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/b69bb88e20c6f8e998dff3e13a316207f49d3fa2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/a8b7117ae3a791c6a328674d05a06cd45d8241bd 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/62914959b35e9a1e29cc0f64cb8cfc5075a5366f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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