Linux Kernel up to 7.2-rc2 kxsd9 kxsd9_write_raw release of resource

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4.3	$0-$5k	2.40

Summaryinfo

A vulnerability has been found in Linux Kernel up to 7.2-rc2 and classified as problematic. This vulnerability affects the function kxsd9_write_raw of the component kxsd9. The manipulation leads to release of resource. This vulnerability is traded as CVE-2026-64503. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Linux Kernel up to 7.2-rc2. It has been rated as problematic. This issue affects the function kxsd9_write_raw of the component kxsd9. The manipulation with an unknown input leads to a release of resource vulnerability. Using CWE to declare the problem leads to CWE-772. The product does not release a resource after its effective lifetime has ended, i.e., after the resource is no longer needed. Impacted is availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: iio: accel: kxsd9: fix runtime PM imbalance on write_raw() error kxsd9_write_raw() takes a runtime PM reference with pm_runtime_get_sync() but returns -EINVAL directly when a scale with a non-zero integer part is requested, skipping the matching pm_runtime_put_autosuspend(). This leaks a runtime PM usage-counter reference on every such write, after which the device can no longer autosuspend. Set the error code and fall through to the existing put instead of returning early.

The advisory is shared at git.kernel.org. The identification of this vulnerability is CVE-2026-64503 since 07/19/2026. The exploitation is known to be easy. The attack may be initiated remotely. Additional levels of successful authentication are needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

Upgrading to version 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.96, 6.18.39, 7.1.4 or 7.2-rc3 eliminates this vulnerability. Applying the patch a93fd69c1ab0854ac4f5b8439c26dfadb25dfd20/eeece4a85ece6f3837c75ef26a9b2bf5a1d0fcfc/191fcfeb729ededd8dd2a999c6bf351ddfa0cec7/36154171385a8a2444a4b3c6eaa0c5294cb02478/223703d6e8bed50b6a0b47e160877909518d94b9/6293211d142605bec435229ef0aa3668b8964164/13a91e8631cfeb68e5b7fd6687f194f5a86e83fe/44a5fd874bb6873bdaec59f722c1d57832fbc9df is able to eliminate this problem.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-48847). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 5.10.260
• 5.15.211
• 6.1.177
• 6.6.144
• 6.12.0
• 6.12.1
• 6.12.2
• 6.12.3
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• 6.12.90
• 6.12.91
• 6.12.92
• 6.12.93
• 6.12.94
• 6.12.95
• 6.18.0
• 6.18.1
• 6.18.2
• 6.18.3
• 6.18.4
• 6.18.5
• 6.18.6
• 6.18.7
• 6.18.8
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• 6.18.34
• 6.18.35
• 6.18.36
• 6.18.37
• 6.18.38
• 7.1.0
• 7.1.1
• 7.1.2
• 7.1.3
• 7.2-rc1
• 7.2-rc2

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.5
VulDB Meta Temp Score: 4.3

VulDB Base Score: 4.5
VulDB Temp Score: 4.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Release of resource
CWE: CWE-772 / CWE-400 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.10.261/5.15.212/6.1.178/6.6.145/6.12.96/6.18.39/7.1.4/7.2-rc3
Patch: a93fd69c1ab0854ac4f5b8439c26dfadb25dfd20/eeece4a85ece6f3837c75ef26a9b2bf5a1d0fcfc/191fcfeb729ededd8dd2a999c6bf351ddfa0cec7/36154171385a8a2444a4b3c6eaa0c5294cb02478/223703d6e8bed50b6a0b47e160877909518d94b9/6293211d142605bec435229ef0aa3668b8964164/13a91e8631cfeb68e5b7fd6687f194f5a86e83fe/44a5fd874bb6873bdaec59f722c1d57832fbc9df

Timelineinfo

07/19/2026 CVE reserved
07/25/2026 +6 days Advisory disclosed
07/25/2026 +0 days VulDB entry created
07/26/2026 +1 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-64503 (🔒)
GCVE (CVE): GCVE-0-2026-64503
GCVE (VulDB): GCVE-100-383309
EUVD: 🔒

Entryinfo

Created: 07/25/2026 19:25
Updated: 07/26/2026 03:48
Changes: 07/25/2026 19:25 (59), 07/26/2026 03:48 (1)
Complete: 🔍
Cache ID: 216::103

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