CVE-2023-54040: ice: fix wrong fallback logic for FDIR

Severity: high (CVSS 8.8 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: 2025-12-24 · updated 2026-10-15

Description

In the Linux kernel, the following vulnerability has been resolved: ice: fix wrong fallback logic for FDIR When adding a FDIR filter, if ice_vc_fdir_set_irq_ctx returns failure, the inserted fdir entry will not be removed and if ice_vc_fdir_write_fltr returns failure, the fdir context info for irq handler will not be cleared which may lead to inconsistent or memory leak issue. This patch refines failure cases to resolve this issue.

Affected products

Linux kernel: 5.13 — fixed in 6.3

How to fix

Upgrade to a fixed version: Linux kernel 6.3. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/391d28c0e38c0e5b11a4240a2b4976cf63e87f45
https://git.kernel.org/stable/c/aad3b871efe26f36f45f8b4649653b5d3fd9c35e
https://git.kernel.org/stable/c/b4a01ace20f5c93c724abffc0a83ec84f514b98d
https://git.kernel.org/stable/c/cbfed5f114b5310f221979fc8190f55c6abc3400

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