CVE-2026-46188

Summary

In the Linux kernel, the following vulnerability has been resolved:

octeon_ep_vf: add NULL check for napi_build_skb()

napi_build_skb() can return NULL on allocation failure. In __octep_vf_oq_process_rx(), the result is used directly without a NULL check in both the single-buffer and multi-fragment paths, leading to a NULL pointer dereference.

Add NULL checks after both napi_build_skb() calls, properly advancing descriptors and consuming remaining fragments on failure.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1 < 60246cdd4c515ea7d920cddf48932efcb990773eaffected
LinuxLinux1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1 < b0f4711b426a06fb4c4be85c36b9f5588d5140d3affected
LinuxLinux1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1 < 6fef6640bbf360e254cc0174365ed30ce3a07572affected
LinuxLinux1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1 < dd66b42854705e4e4ee7f14d260f86c578bed3e3affected
LinuxLinux6.9affected
LinuxLinux0 < 6.9unaffected
LinuxLinux6.12.88 <= 6.12.*unaffected
LinuxLinux6.18.30 <= 6.18.*unaffected
LinuxLinux7.0.7 <= 7.0.*unaffected
LinuxLinux7.1 <= *unaffected

Weaknesses

References