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CVE-2026-72329

net/liquidio: drop cached VF pci_dev LUT

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 6.6.160, 6.12.114, 6.18.57, 7.1.5
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: total

Summary

The liquidio network driver for Cavium/Marvell OCTEON cards, as used in the Linux kernel, is affected when SR-IOV virtual functions are enabled. A flaw in how the driver cached references to virtual function devices could lead to use of a stale pointer when handling a function-level reset request, potentially causing a crash or memory corruption on the host.

Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.

Read the original 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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: total

  3. Record last updated

Affected versions

  • Linux Linux

    Version range not reported

  • Linux Linux

    4.10

  • KernelLinux

    From 4.10.0 · fixed in 6.6.160; From 6.7.0 · fixed in 6.12.114; From 6.13.0 · fixed in 6.18.57; From 6.19.0 · fixed in 7.1.5

References 6

git.kernel.org