Description
In the Linux kernel, the following vulnerability has been resolved: net/liquidio: drop cached VF pci_dev LUT The PF SR-IOV enable path caches VF pci_dev pointers in dpiring_to_vfpcidev_lut[] by iterating with pci_get_device(). Those entries do not own a reference, because the iterator drops the previous device reference on each step. The cached pointer is then dereferenced later when handling OCTEON_VF_FLR_REQUEST. Replace the cached VF mapping with runtime lookup on the mailbox DPI ring: derive the VF index from q_no, resolve the VF via exported PCI IOV helpers, validate it with the PF pointer and VF ID, then issue pcie_flr() and drop the reference with pci_dev_put(). Remove the unused VF lookup table initialization and cleanup.
References6
- git.kernel.org/stable/c/08ff33dce6f91510bb296a753a232db0ca3fd3d8
- git.kernel.org/stable/c/1cf5c6a80adc31456f3e93b2922a2446fd63e2c4
- git.kernel.org/stable/c/4ec87796fadf5a631ee6513c258c0e3d9ca62f79
- git.kernel.org/stable/c/5c0e3ba4f500fd4314ceb42f07f16bc445156431
- git.kernel.org/stable/c/81acef3a247fd523513a2e9f71de1c167bc0f882
- git.kernel.org/stable/c/e3b20de8d7c06c8f1a0ded1e52be9d282609c3da
Metrics
- CVSS 3.1
-
9.3
CRITICAL
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 9 · as of 11 November 2026
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