CVE-2025-38341: eth: fbnic: avoid double free when failing to DMA-map FW msg

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-07-10 · updated 2026-07-30
Weakness: CWE-415

Description

In the Linux kernel, the following vulnerability has been resolved: eth: fbnic: avoid double free when failing to DMA-map FW msg The semantics are that caller of fbnic_mbx_map_msg() retains the ownership of the message on error. All existing callers dutifully free the page.

Affected products

Linux kernel: from 6.11 before 6.12.35; from 6.13 before 6.15.4; 6.16-rc1, 6.16-rc2 — fixed in 6.12.35, 6.15.4

How to fix

Upgrade to a fixed version: Linux kernel 6.12.35, 6.15.4. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/0a211e23852019ef55c70094524e87a944accbb5
https://git.kernel.org/stable/c/5bd1bafd4474ee26f504b41aba11f3e2a1175b88
https://git.kernel.org/stable/c/670179265ad787b9dd8e701601914618b8927755

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