Linux Kernel up to 6.6.156/6.12.109/6.18.51/7.2.5 Qmp Usb Runtime Suspend Callback phy uninitialized pointer

CVSS Meta Temp Score
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CTI Interest Score
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4.0$0-$5k0.00-

Summaryinfo

A vulnerability labeled as problematic has been found in Linux Kernel up to 6.6.156/6.12.109/6.18.51/7.2.5. The affected element is the function Runtime Suspend Callback of the component Qmp Usb. Such manipulation of the argument phy leads to uninitialized pointer. This vulnerability is listed as CVE-2026-90280. The attack must be carried out locally. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.6.156/6.12.109/6.18.51/7.2.5. It has been rated as problematic. Affected by this issue is the function Runtime Suspend Callback of the component Qmp Usb. The manipulation of the argument phy with an unknown input leads to a uninitialized pointer vulnerability. Using CWE to declare the problem leads to CWE-824. The product accesses or uses a pointer that has not been initialized. Impacted is availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: phy: qcom: qmp-usb: Fix possible NULL-deref on early runtime suspend There is a small window where the runtime suspend callback may run after pm_runtime_enable() and before pm_runtime_forbid(). In this case, a crash occurs because runtime suspend/resume dereferences qmp->phy pointer, which is not yet initialized: `if (!qmp->phy->init_count) {` This can also happen if user re-enables runtime-pm via the sysfs attribute before qmp phy is initialized. Similarly to other qcom phy drivers, introduce a qmp->phy_initialized variable that can be used to avoid relying on the possibly uninitialized phy pointer.

The advisory is shared for download at git.kernel.org. This vulnerability is handled as CVE-2026-90280 since 09/11/2026. The exploitation is known to be easy. The attack needs to be approached locally. Additional levels of successful authentication are necessary for exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

Upgrading to version 6.6.157, 6.12.110, 6.18.52, 7.2.6 or 7.3-rc1 eliminates this vulnerability. Applying the patch 9b28287c5dea7650e6dd317591b9e82b6e145365/f4e39ab1b2009a89c60e4cb9dbefb8140d405eff/5547fd950d6bf72de861b6934341e7bb0888640c/03455404fb6cbfd65842695df26739853fc1516b/142c5593379273264474f31d5956b1a0065cd576 is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.2
VulDB Meta Temp Score: 4.0

VulDB Base Score: 4.2
VulDB Temp Score: 4.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Uninitialized pointer
CWE: CWE-824 / CWE-908
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.6.157/6.12.110/6.18.52/7.2.6/7.3-rc1
Patch: 9b28287c5dea7650e6dd317591b9e82b6e145365/f4e39ab1b2009a89c60e4cb9dbefb8140d405eff/5547fd950d6bf72de861b6934341e7bb0888640c/03455404fb6cbfd65842695df26739853fc1516b/142c5593379273264474f31d5956b1a0065cd576

Timelineinfo

09/11/2026 CVE reserved
09/17/2026 +6 days Advisory disclosed
09/17/2026 +0 days VulDB entry created
09/17/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-90280 (🔒)
GCVE (CVE): GCVE-0-2026-90280
GCVE (VulDB): GCVE-100-406808

Entryinfo

Created: 09/17/2026 21:17
Changes: 09/17/2026 21:17 (60)
Complete: 🔍
Cache ID: 216::103

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