CVE-2026-45882 - Vulnerability Details

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

Description

In 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.

Published: 2026-05-27

Score: 7.8 High

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Impact

A race condition in the Linux power supply driver for pm8916_bms_vm, representing CWE-364 and CWE-416, allows a use‑after‑free of the power_supply handle when an interrupt fires after the driver is unregistered but before the IRQ handler is cleared. The resulting call to power_supply_changed() on a freed object can crash the kernel or silently corrupt memory.

Affected Systems

All Linux kernel builds that include the pm8916_bms_vm power supply driver are affected, regardless of distribution. Because the CVE does not list specific kernel versions, any kernel revision that contains this driver prior to the fix is potentially vulnerable.

Risk and Exploitability

The CVSS score for this issue is 7.8. The EPSS score is 0.00159 and the vulnerability is not listed in the CISA KEV catalog. The race condition involves interrupts during driver removal or probe, which can cause the IRQ handler to call power_supply_changed() with a freed or uninitialized power_supply handle, potentially leading to a kernel crash or memory corruption.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Linux

unaffected

Version	Status	Constraints
`098bce1838e0549228c8d426e5de72ec5594b5c4`	affected	< b69bb88e20c6f8e998dff3e13a316207f49d3fa2
`098bce1838e0549228c8d426e5de72ec5594b5c4`	affected	< a8b7117ae3a791c6a328674d05a06cd45d8241bd
`098bce1838e0549228c8d426e5de72ec5594b5c4`	affected	< 17db6b3abd823c9fba3f3413c4f0f432d99d49dc
`098bce1838e0549228c8d426e5de72ec5594b5c4`	affected	< 62914959b35e9a1e29cc0f64cb8cfc5075a5366f

Linux

affected

Version	Status	Constraints
`6.7`	affected	—
`0`	unaffected	< 6.7
`6.12.75`	unaffected	≤ 6.12.*
`6.18.14`	unaffected	≤ 6.18.*
`6.19.4`	unaffected	≤ 6.19.*
`7.0`	unaffected	≤ *

Configuration 1 [-]

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

No data.

Vendor Product Confidence Versions

Linux

Linux Kernel

99%

Version	Status	Scheme	Platform
`[098bce1838e0549228c8d426e5de72ec5594b5c4,b69bb88e20c6f8e998dff3e13a316207f49d3fa2)`	affected	code_commit	—
`[098bce1838e0549228c8d426e5de72ec5594b5c4,a8b7117ae3a791c6a328674d05a06cd45d8241bd)`	affected	code_commit	—
`[098bce1838e0549228c8d426e5de72ec5594b5c4,17db6b3abd823c9fba3f3413c4f0f432d99d49dc)`	affected	code_commit	—
`[098bce1838e0549228c8d426e5de72ec5594b5c4,62914959b35e9a1e29cc0f64cb8cfc5075a5366f)`	affected	code_commit	—

Linux

Linux Kernel

99%

Version	Status	Scheme	Platform
`6.7`	affected	semver	—
`[0,6.7)`	unaffected	semver	—
`[6.12.75,6.12.*]`	unaffected	generic	—
`[6.18.14,6.18.*]`	unaffected	generic	—
`[6.19.4,6.19.*]`	unaffected	generic	—
`[7.0,*]`	unaffected	generic	—

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Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

Apply the upstream kernel patch that reorders the IRQ request to occur after the power_supply registration.
Rebuild or install a kernel that includes the fixed pm8916_bms_vm driver.
If a patch cannot be applied immediately, disable the pm8916 battery management driver or block its IRQ to prevent the race condition from occurring.

Generated by OpenCVE AI on August 12, 2026 at 03:13 UTC.

Tracking

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Advisories

Source	ID	Title
Ubuntu USN	USN-8492-1	Linux kernel vulnerabilities
Ubuntu USN	USN-8492-2	Linux kernel vulnerabilities
Ubuntu USN	USN-8497-1	Linux kernel (Low Latency) vulnerabilities
Ubuntu USN	USN-8498-1	Linux kernel (NVIDIA Tegra) vulnerabilities
Ubuntu USN	USN-8499-1	Linux kernel (Xilinx) vulnerabilities
Ubuntu USN	USN-8492-3	Linux kernel (Raspberry Pi Real-time) vulnerabilities
Ubuntu USN	USN-8492-4	Linux kernel (Raspberry Pi) vulnerabilities
Ubuntu USN	USN-8492-5	Linux kernel (FIPS) vulnerabilities
Ubuntu USN	USN-8606-1	Linux kernel (Azure) vulnerabilities
Ubuntu USN	USN-8607-1	Linux kernel (Azure CVM) vulnerabilities
Ubuntu USN	USN-8609-1	Linux kernel (Azure CVM) vulnerabilities
Ubuntu USN	USN-8619-1	Linux kernel (HWE) vulnerabilities

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00159.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://git.kernel.org/stable/c/17db6b3abd823c9fba3f3413c4f0f432d99d49dc
https://git.kernel.org/stable/c/62914959b35e9a1e29cc0f64cb8cfc5075a5366f
https://git.kernel.org/stable/c/a8b7117ae3a791c6a328674d05a06cd45d8241bd
https://git.kernel.org/stable/c/b69bb88e20c6f8e998dff3e13a316207f49d3fa2
https://lore.kernel.org/linux-cve-announce/2026052715-CVE-2026-45882-1cea@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2026-45882
https://www.cve.org/CVERecord?id=CVE-2026-45882

History

Thu, 28 May 2026 15:00:00 +0000

Type	Values Removed	Values Added
Weaknesses	CWE-416

Thu, 28 May 2026 12:15:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-364
References		https://lore.kernel.org/linux-cve-announce/2026052715-CVE-2026-45882-1cea@gregkh/T https://nvd.nist.gov/vuln/detail/CVE-2026-45882 https://www.cve.org/CVERecord?id=CVE-2026-45882

Wed, 27 May 2026 17:15:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-416

Wed, 27 May 2026 14:15:00 +0000

Type	Values Removed	Values Added
Description		In 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.
Title		power: supply: pm8916_bms_vm: Fix use-after-free in power_supply_changed()
First Time appeared		Linux Linux linux Kernel
CPEs		cpe:2.3:o:linux:linux_kernel::::::::
Vendors & Products		Linux Linux linux Kernel
References		https://git.kernel.org/stable/c/17db6b3abd823c9fba3f3413c4f0f432d99d49dc https://git.kernel.org/stable/c/62914959b35e9a1e29cc0f64cb8cfc5075a5366f https://git.kernel.org/stable/c/a8b7117ae3a791c6a328674d05a06cd45d8241bd https://git.kernel.org/stable/c/b69bb88e20c6f8e998dff3e13a316207f49d3fa2

Subscriptions

Linux Linux Kernel

MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2026-05-27T12:16:55.144Z

Updated: 2026-05-27T12:16:55.144Z

Reserved: 2026-05-13T15:03:33.082Z

Link: CVE-2026-45882

Vulnrichment

No data.

NVD

Status : Analyzed

Published: 2026-05-27T14:17:02.047

Modified: 2026-06-25T21:12:16.967

Link: CVE-2026-45882

Redhat

Severity :

Publid Date: 2026-05-27T00:00:00Z

Links: CVE-2026-45882 - Bugzilla

OpenCVE Enrichment

Updated: 2026-08-12T03:15:04Z

Weaknesses

CWE-364
Signal Handler Race Condition
CWE-416
Use After Free

Impact

Affected Systems

Risk and Exploitability

Tracking

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

Subscriptions

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