CVE-2026-93278

In the Linux kernel, the following vulnerability has been resolved: staging: octeon: add missing napi_disable in cvm_oct_rx_shutdown cvm_oct_rx_shutdown calls free_irq and netif_napi_del without disabling the napi instance first. As the free_irq only waits for completion of hard interrupt handlers, the napi poll function could still be active. If cvm_oct_remove proceeds to free the plat structure (which holds the NAPI instances), the active poll function will access freed memory, resulting in a use-after-free crash.

EPSS

0.2% chance of exploitation in the next 30 days; higher than 8% of CVEs (scores of 2026-10-25)

Published

2026-09-24

Modified

2026-10-19

Record from

the NVD, synced 2026-10-19

References

• https://git.kernel.org/stable/c/158389d7af04bbf0664d91c2ce31fcc9eeace1eb
• https://git.kernel.org/stable/c/89f9f433271fad9351de6a3c713b45b2cfb23e4a
• https://git.kernel.org/stable/c/98f9036b2254c928cb44da0c77dba38f66f7d8f1
• https://git.kernel.org/stable/c/b2243ffaac14cc3639b5b32a371aac37f96ee554
• https://git.kernel.org/stable/c/b38fbd68cc36b4f478a1e3cfc169b8616ae1337d

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