power: supply: bq25980: Fix use-after-free in power_supply_changed()

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-45879
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-27 14:17:01 UTC
Updated2026-06-25 21:12:07 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: power: supply: bq25980: 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: 0.000240000 probability, percentile 0.073320000 (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 5069185fc18e810715a91d80fcd075e03add600c 86f93dfb23f5bf4f285c4256a7e909d222f7de56 git Not specified
CNA Linux Linux affected 5069185fc18e810715a91d80fcd075e03add600c 16875e3b7bc9e59bfa0acaf1e43f275a6f42a30f git Not specified
CNA Linux Linux affected 5069185fc18e810715a91d80fcd075e03add600c 0560a4b09c92e2ecaa883965cf6f9ca51c158ff9 git Not specified
CNA Linux Linux affected 5069185fc18e810715a91d80fcd075e03add600c 0de95d29d847c6217b7d5845e24a71a4aee7b359 git Not specified
CNA Linux Linux affected 5069185fc18e810715a91d80fcd075e03add600c 4aeaf03c17260415c2fdd55992f9ad4188d5455a git Not specified
CNA Linux Linux affected 5069185fc18e810715a91d80fcd075e03add600c 03d1e4ee4e6aa6d2966e883e4ca0e5be73bf1b7c git Not specified
CNA Linux Linux affected 5069185fc18e810715a91d80fcd075e03add600c abea607ff2f62f4c0a5fb29f7fbdaaab163276a4 git Not specified
CNA Linux Linux affected 5069185fc18e810715a91d80fcd075e03add600c 5f0b1cb41906e86b64bf69f5ededb83b0d757c27 git Not specified
CNA Linux Linux affected 5.10 Not specified
CNA Linux Linux unaffected 5.10 semver Not specified
CNA Linux Linux unaffected 5.10.252 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.202 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.165 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.128 6.6.* 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/4aeaf03c17260415c2fdd55992f9ad4188d5455a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/abea607ff2f62f4c0a5fb29f7fbdaaab163276a4 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/0de95d29d847c6217b7d5845e24a71a4aee7b359 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/16875e3b7bc9e59bfa0acaf1e43f275a6f42a30f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/86f93dfb23f5bf4f285c4256a7e909d222f7de56 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/5f0b1cb41906e86b64bf69f5ededb83b0d757c27 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/03d1e4ee4e6aa6d2966e883e4ca0e5be73bf1b7c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/0560a4b09c92e2ecaa883965cf6f9ca51c158ff9 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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