NVD / CVE Program· CNA Linux

CVE-2026-45867: power: supply: act8945a: Fix use-after-free in power_supply_changed()

Noroxi assessment

Priority: Monitor (action score 31/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.16% (FIRST EPSS).
Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
Fixed version: Linux Linux 0768e8525a46df103647ca5059b32320d7fd17e4, 3291c51d4684d048dd2eb91b5b65fcfdaf72141f, 697bb5dc0cb4791e244f3970b067bc1ef33be9d9.
Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 0768e8525a46df103647ca5059b32320d7fd17e4, 3291c51d4684d048dd2eb91b5b65fcfdaf72141f, 697bb5dc0cb4791e244f3970b067bc1ef33be9d9 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: power: supply: act8945a: 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.

HighCVSS 7.8 · v3.1—No exploit Fix available

Memory safety

BDU:2026-11756

Published: May 27, 2026
Updated: Jun 25, 2026
EPSS: 0.1% · 5th percentile
CWE: CWE-416

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 31 / 40 · 7.8 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.1%

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Not in KEV: no record of exploitation in the wild
No public exploit code on record
A fix has been released

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Noroxi analysis

What does it mean in your environment?

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
linux	linux kernel	cpe:2.3:o:linux:linux_kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

linux linux kernel4.9 and later · before 5.10.252
linux linux kernel5.11 and later · before 5.15.202
linux linux kernel5.16 and later · before 6.1.165
linux linux kernel6.2 and later · before 6.6.128
linux linux kernel6.7 and later · before 6.12.75
linux linux kernel6.13 and later · before 6.18.14
linux linux kernel6.19 and later · before 6.19.4

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

Linux Linux
- 4.9affected
- a09209acd6a808794bdd7866af3678d1fd1d90e7 and later · before f2a0777b1e5a3cee1712c4d3e9095c0df8fc8cb3affected · git
- a09209acd6a808794bdd7866af3678d1fd1d90e7 and later · before 0768e8525a46df103647ca5059b32320d7fd17e4affected · git
- a09209acd6a808794bdd7866af3678d1fd1d90e7 and later · before d023ef9f748b2090f7a9dbdd5c622b6ad99088eaaffected · git
- a09209acd6a808794bdd7866af3678d1fd1d90e7 and later · before 697bb5dc0cb4791e244f3970b067bc1ef33be9d9affected · git
- a09209acd6a808794bdd7866af3678d1fd1d90e7 and later · before 76a42ba547a9b2e2337894f67a4d9247445007d5affected · git
- a09209acd6a808794bdd7866af3678d1fd1d90e7 and later · before f27eb76def5c07e4d7cc468b40741f19dafc83ceaffected · git
- a09209acd6a808794bdd7866af3678d1fd1d90e7 and later · before 83c1bd466c514cb24ca6ef347c5aac76a13c4e1eaffected · git
- a09209acd6a808794bdd7866af3678d1fd1d90e7 and later · before 3291c51d4684d048dd2eb91b5b65fcfdaf72141faffected · git
- before 4.9not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Ecosystem	Package	Affected range	Fix
Debian:12	linux	before 6.1.170-1	6.1.170-1
Debian:13	linux	before 6.12.85-1	6.12.85-1
Debian:14	linux	before 6.18.14-1	6.18.14-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
90Now
CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
89Now
CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
85Now

Published before and after this one in the same product

← EarlierCVE-2026-45865May 27, 2026 · mctp i2c: initialise event handler read bytes
22Monitor
← EarlierCVE-2026-45866May 27, 2026 · serial: caif: fix use-after-free in caif_serial ldisc_close()
31Monitor
Later →CVE-2026-45868May 27, 2026 · pinctrl: single: fix refcount leak in pcs_add_gpio_func()
22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
Linux Linux	0768e8525a46df103647ca5059b32320d7fd17e4	Vendor (CNA)
Linux Linux	3291c51d4684d048dd2eb91b5b65fcfdaf72141f	Vendor (CNA)
Linux Linux	697bb5dc0cb4791e244f3970b067bc1ef33be9d9	Vendor (CNA)
Linux Linux	76a42ba547a9b2e2337894f67a4d9247445007d5	Vendor (CNA)
Linux Linux	83c1bd466c514cb24ca6ef347c5aac76a13c4e1e	Vendor (CNA)
Linux Linux	d023ef9f748b2090f7a9dbdd5c622b6ad99088ea	Vendor (CNA)
Linux Linux	f27eb76def5c07e4d7cc468b40741f19dafc83ce	Vendor (CNA)
Linux Linux	f2a0777b1e5a3cee1712c4d3e9095c0df8fc8cb3	Vendor (CNA)
debian:linux	6.1.170-1 · Debian:12	Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

TR-26-0290 · Jun 2, 2026(Linux Kernel Güvenlik Bildirimi)

All national notices →

Technical details

Attack conditions

Someone with local access to the system can trigger it.
A low-privileged account is enough.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: high · data can be read
Integrity: high · data or configuration can be modified
Availability: high · the service can be disrupted

Attack vector: Local
Attack complexity: Low
Privileges required: Low
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

Weakness class (CWE)

CWE-416 · Use After Free

CVSS vector

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

nvd-primary

Root cause

After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.

The bug in code

The whole CWE-416 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1free(dev->buf);
2/* ... another thread is still running ... */
3process(dev->buf);

Fixed

1lock(&dev->lock);
2free(dev->buf);
3dev->buf = NULL;
4unlock(&dev->lock);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

Fix✗ → ✓Sep 28, 2026, 10:09 PM UTC

For records you follow, these changes also arrive as notifications. →

References

git.kernel.org/stable/c/0768e8525a46df103647ca5059b32320d7fd17e4

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records