CVE-2026-93265
HighCVSS 7.7Exploitation Probability (EPSS)
Low risk3th percentile - higher than 3% of all known CVEs
Summary
In the Linux kernel, the PCI/pwrctrl tc9563 driver parsing both functions of the integrated Ethernet MAC Endpoint under DSP3 caused an out-of-bounds access past the tc9563_pwrctrl->cfg array. The fix parses the Endpoint node under DSP3 instead of both functions.
Risk Assessment
Out-of-bounds array access can read or write uninitialized memory, causing kernel instability, system crashes, or potential security impact on platforms with the tc9563 controller.
Recommendation
Update the Linux kernel to a version with the fix that parses the Endpoint node under DSP3 instead of both functions, eliminating the out-of-bounds access.
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Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: PCI/pwrctrl: tc9563: Fix parsing the integrated Ethernet MAC Endpoint node DSP3 has an integrated Ethernet MAC Endpoint which has its own set of config registers for configuring settings such as ASPM. The Endpoint device has two physical functions and those two functions share the same settings. Parse the Endpoint node under DSP3 instead of parsing both functions. The existing parsing logic also has one OOB issue as parsing both functions will result in accessing past the tc9563_pwrctrl->cfg array.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS