CVE-2026-93278
Unknown
Description
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.
SeverityUnknown
CVSS—
Exploit probability—
Product
Linux
PublishedSep 24, 2026
First seenSep 24, 2026
How to fix
Update
- Linux Linux158389d7af04bbf0664d91c2ce31fcc9eeace1eb, c124049c3a7006fd6caf629139a5722610bbffb4, 98f9036b2254c928cb44da0c77dba38f66f7d8f1, b38fbd68cc36b4f478a1e3cfc169b8616ae1337d, 89f9f433271fad9351de6a3c713b45b2cfb23e4a, b2243ffaac14cc3639b5b32a371aac37f96ee554, c0a9a8586a63fda49e61a6b83360feac2a60d898 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 3368c784bcf77124aaf39372e627016c36bd4472 ≤ v < 158389d7af04bbf0664d91c2ce31fcc9eeace1eb, 3368c784bcf77124aaf39372e627016c36bd4472 ≤ v < c124049c3a7006fd6caf629139a5722610bbffb4, 3368c784bcf77124aaf39372e627016c36bd4472 ≤ v < 98f9036b2254c928cb44da0c77dba38f66f7d8f1, 3368c784bcf77124aaf39372e627016c36bd4472 ≤ v < b38fbd68cc36b4f478a1e3cfc169b8616ae1337d, 3368c784bcf77124aaf39372e627016c36bd4472 ≤ v < 89f9f433271fad9351de6a3c713b45b2cfb23e4a, 3368c784bcf77124aaf39372e627016c36bd4472 ≤ v < b2243ffaac14cc3639b5b32a371aac37f96ee554, 3368c784bcf77124aaf39372e627016c36bd4472 ≤ v < c0a9a8586a63fda49e61a6b83360feac2a60d898, 2.6.34 | 158389d7af04bbf0664d91c2ce31fcc9eeace1eb, c124049c3a7006fd6caf629139a5722610bbffb4, 98f9036b2254c928cb44da0c77dba38f66f7d8f1, b38fbd68cc36b4f478a1e3cfc169b8616ae1337d, 89f9f433271fad9351de6a3c713b45b2cfb23e4a, b2243ffaac14cc3639b5b32a371aac37f96ee554, c0a9a8586a63fda49e61a6b83360feac2a60d898 |
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