CVE-2026-93278— staging: octeon: add missing napi_disable in cvm_oct_rx_shutdown
Quick assessment
Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
在 Linux 内核中，以下漏洞已得到修复： staging: octeon: 在 cvm_oct_rx_shutdown 中补充缺失的 napi_disable 调用 cvm_oct_rx_shutdown 函数在调用 free_irq 和 netif_napi_del 之前，未首先禁用 NAPI 实例。由于 free_irq 仅等待硬中断处理程序完成，NAPI 的轮询函数可能仍在运行。如果后续 cvm_oct_remove 继续释放包含 NAPI 实例的 plat 结构体，活动的轮询函数将访问已释放的内存，从而
Possible ATT&CK Techniques 1 AI
T1690 · Prevent Command History LoggingAffected Version Matrix 16
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 3368c784bcf77124aaf39372e627016c36bd4472< 158389d7af04bbf0664d91c2ce31fcc9eeace1eb |
affected |
3368c784bcf77124aaf39372e627016c36bd4472< c124049c3a7006fd6caf629139a5722610bbffb4 |
affected | ||
3368c784bcf77124aaf39372e627016c36bd4472< 98f9036b2254c928cb44da0c77dba38f66f7d8f1 |
affected | ||
3368c784bcf77124aaf39372e627016c36bd4472< b38fbd68cc36b4f478a1e3cfc169b8616ae1337d |
affected | ||
3368c784bcf77124aaf39372e627016c36bd4472< 89f9f433271fad9351de6a3c713b45b2cfb23e4a |
affected | ||
3368c784bcf77124aaf39372e627016c36bd4472< b2243ffaac14cc3639b5b32a371aac37f96ee554 |
affected | ||
3368c784bcf77124aaf39372e627016c36bd4472< c0a9a8586a63fda49e61a6b83360feac2a60d898 |
affected | ||
2.6.34 |
affected | ||
| … +8 more rows | |||
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I. Basic Information for CVE-2026-93278
Vulnerability Information
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Vulnerability Title
staging: octeon: add missing napi_disable in cvm_oct_rx_shutdown
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-93278
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-93278 (7)
Same Patch Batch · Linux · 2026-09-24 · 234 CVEs total
| CVE-2026-93207 | 9.8 CRITICAL | SUNRPC: Zero rpc_gss_wire_cred at svcauth_gss_decode_credbody() entry |
| CVE-2026-97413 | 9.8 CRITICAL | RDMA/rtrs-srv: Fix integer underflow in process_read and process_write |
| CVE-2026-93228 | 9.1 CRITICAL | svcrdma: Reject Write/Reply chunks with segcount 0 |
| CVE-2026-93793 | 8.8 HIGH | wifi: iwlwifi: mvm: validate TX_CMD response layout |
| CVE-2026-93799 | 8.8 HIGH | wifi: iwlwifi: mvm: validate sta_id in BA window status notif |
| CVE-2026-93790 | 8.8 HIGH | wifi: iwlwifi: mvm: fix out-of-bounds tid_data access in BA notif |
| CVE-2026-93806 | 8.8 HIGH | wifi: cfg80211: validate assoc response length before status and IE access |
| CVE-2026-97442 | 8.8 HIGH | wifi: ath11k: fix invalid data access in ath11k_dp_rx_h_undecap_nwifi |
| CVE-2026-97509 | 8.8 HIGH | thunderbolt: Keep XDomain reference during the lifetime of a service |
| CVE-2026-97409 | 8.8 HIGH | nvme-fc: Do not cancel requests in io target before it is initialized |
| CVE-2026-93280 | 8.8 HIGH | greybus: audio: bound the topology section sizes against the fetched size |
| CVE-2026-93284 | 8.8 HIGH | drm/pagemap: dma-unmap pages before handling migration errors |
| CVE-2026-97451 | 8.4 HIGH | ACPICA: Fix integer overflow in acpi_ex_opcode_3A_1T_1R() (mid_op) |
| CVE-2026-97452 | 8.4 HIGH | ACPICA: Prevent adding invalid references |
| CVE-2026-97455 | 8.4 HIGH | ACPICA: Fix use-after-free in acpi_ds_terminate_control_method() |
| CVE-2026-97450 | 8.4 HIGH | ACPICA: validate handler object type in two places |
| CVE-2026-93827 | 8.4 HIGH | virtio-fs: avoid double-free on failed queue setup |
| CVE-2026-97433 | 8.2 HIGH | nvme: validate FDP configuration descriptor sizes |
| CVE-2026-93221 | 8.1 HIGH | nfsd: convert nfsd_net boolean flags to unsigned long flags word |
| CVE-2026-93786 | 8.1 HIGH | ksmbd: preserve VFS inherited POSIX ACL mask |
Showing top 20 of 234 CVEs. View all on vendor page → →
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Same vendor: Linux
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CVE-2026-98384
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V. Comments for CVE-2026-93278
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