CVE-2026-80621

Summary

In the Linux kernel, the following vulnerability has been resolved:

PCI: dwc: Avoid dwc_pcie_rasdes_debugfs_deinit() NULL dereference when no RAS DES capability

dwc_pcie_rasdes_debugfs_init() returns success when the controller has no RAS DES capability, leaving pci->debugfs->rasdes_info unset. The common debugfs teardown path still calls dwc_pcie_rasdes_debugfs_deinit(), which dereferences rasdes_info unconditionally.

Return early when no RAS DES state was allocated. In that case no RAS DES mutex was initialized, so there is nothing to destroy.

[mani: reworded subject]

Affected Software

VendorProductVersion RangeStatus
LinuxLinux4fbfa17f9a075593281034f566ca79cbf4930c82 < 514b84b1bf30f75f32c2fa66734dc1a177abb73eaffected
LinuxLinux4fbfa17f9a075593281034f566ca79cbf4930c82 < 855870e8c59b97fd424e8fa3543c9e289bb48facaffected
LinuxLinux4fbfa17f9a075593281034f566ca79cbf4930c82 < 26b67fa10ef84ea667942491b50e6261a45f098daffected
LinuxLinux6.15affected
LinuxLinux0 < 6.15unaffected
LinuxLinux6.18.40 <= 6.18.*unaffected
LinuxLinux7.1.5 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References