What’s Vulnerable › Vulnerabilities

CVE-2025-40264: be2net: pass wrb_params in case of OS2BMC

• Severity: unknown
• 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: 2025-12-04 · updated 2026-10-18

Description

In the Linux kernel, the following vulnerability has been resolved: be2net: pass wrb_params in case of OS2BMC be_insert_vlan_in_pkt() is called with the wrb_params argument being NULL at be_send_pkt_to_bmc() call site.  This may lead to dereferencing a NULL pointer when processing a workaround for specific packet, as commit bc0c3405abbb ("be2net: fix a Tx stall bug caused by a specific ipv6 packet") states. The correct way would be to pass the wrb_params from be_xmit().

Affected products

• Linux kernel: 4.2 — fixed in 6.18

How to fix

Upgrade to a fixed version: Linux kernel 6.18. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/012ee5882b1830db469194466a210768ed207388
• https://git.kernel.org/stable/c/1ecd86ec6efddb59a10c927e8e679f183bb9113e
• https://git.kernel.org/stable/c/48d59b60dd5d7e4c48c077a2008c9dcd7b59bdfe
• https://git.kernel.org/stable/c/4c4741f6e7f2fa4e1486cb61e1c15b9236ec134d
• https://git.kernel.org/stable/c/630360c6724e27f1aa494ba3fffe1e38c4205284
• https://git.kernel.org/stable/c/7d277a7a58578dd62fd546ddaef459ec24ccae36
• https://git.kernel.org/stable/c/ce0a3699244aca3acb659f143c9cb1327b210f89
• https://git.kernel.org/stable/c/f499dfa5c98e92e72dd454eb95a1000a448f3405
• https://cert-portal.siemens.com/productcert/html/ssa-253495.html

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