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CVE-2026-23256: net: liquidio: Fix off-by-one error in VF setup_nic_devices() cleanup

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-18 · updated 2026-06-17
• Weakness: CWE-193

Description

In the Linux kernel, the following vulnerability has been resolved: net: liquidio: Fix off-by-one error in VF setup_nic_devices() cleanup In setup_nic_devices(), the initialization loop jumps to the label setup_nic_dev_free on failure. The current cleanup loop while(i--) skip the failing index i, causing a memory leak. Fix this by changing the loop to iterate from the current index i down to 0. Compile tested only. Issue found using code review.

Affected products

• Linux kernel: from 4.10 before 5.10.250; from 5.11 before 5.15.200; from 5.16 before 6.1.163; from 6.2 before 6.6.124; from 6.7 before 6.12.70; from 6.13 before 6.18.10 — fixed in 5.10.250, 5.15.200, 6.1.163, 6.12.70, 6.18.10, 6.6.124

How to fix

Upgrade to a fixed version: Linux kernel 5.10.250, 5.15.200, 6.1.163, 6.12.70. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/01fbca1e93ec3f39f76c31a8f9afa32ce00da48a
• https://git.kernel.org/stable/c/3bf519e39b51cb08a93c0599870b35a23db1031e
• https://git.kernel.org/stable/c/4640fa5ad5e1a0dbd1c2d22323b7d70a8107dcfd
• https://git.kernel.org/stable/c/52b19b3a22306fe452ec9e8ff96063f4bfb77b99
• https://git.kernel.org/stable/c/6cbba46934aefdfb5d171e0a95aec06c24f7ca30
• https://git.kernel.org/stable/c/71a56b89203ec7e5670d94a61a9b4ae617eca804
• https://git.kernel.org/stable/c/bd680e56e316be92c01568be98d85d7a6c9bd92c

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