EUVD-2026-80634
GHSA-7634-6gf7-r2f6
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local UAF requiring privileged driver unbind (PR:H) and a tight IRQ-vs-disable race (AC:H); crash-dominant so C:N/I:L/A:H.
Primary rating from Vendor (Linux).
CVSS VectorVendor: Linux
Lifecycle Timeline
5DescriptionCVE.org
In the Linux kernel, the following vulnerability has been resolved:
usb: typec: qcom-pmic: cancel reset_work on stop
pdphy_stop() disables IRQs but leaves reset_work pending. If the IRQ handler schedules it just before disable_irq(), the work runs after remove() frees the struct via devm.
Call cancel_work_sync() after disabling IRQs to close the window.
This issue was found by an in-house static analysis tool.
AnalysisAI
A use-after-free race in the Linux kernel's Qualcomm PMIC USB Type-C Power Delivery PHY driver (qcom-pmic) can be triggered during driver teardown: pdphy_stop() disables the PD interrupts but does not flush the pending reset_work work item, so if the IRQ handler schedules that work just before disable_irq() takes effect, the work can execute after remove() has already freed the containing structure through devm. Reachability is narrow - it requires local privileged access (the ability to unbind/remove the driver, typically root-gated), the specific Qualcomm PMIC Type-C hardware, and winning a tight timing window, so the assessed vector is CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:H rather than the higher base score sometimes published. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires local privileged access on hardware using the Linux qcom-pmic USB Type-C PD PHY driver (Qualcomm PMIC-based SoC platforms). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a CWE-416/CWE-362 use-after-free driven by a race on driver teardown: pdphy_stop() disables the IRQ but the IRQ handler may schedule reset_work just before disable_irq(), so the work item runs after remove() has freed the containing struct via devm - dereferencing freed memory. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Vendor-released patches are available: upgrade to Linux 6.6.157, 6.12.110, 6.18.51, or 7.2.5 (mainline fix landed by 7.3-rc2), which add a cancel_work_sync() call after IRQ disable in pdphy_stop() so any IRQ-scheduled reset_work is drained before devm frees the driver structure. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory Linux systems that use the Qualcomm PMIC USB Type-C Power Delivery PHY driver (qcom-pmic) and identify any business-critical or privileged-access endpoints; restrict root and driver unbind/remove permissions to authorized administrators only. …
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External POC / Exploit Code
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