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CVE-2026-93279— staging: octeon: add missing tasklet_kill in cvm_oct_tx_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，已修复以下漏洞： staging: octeon: 在 cvm_oct_tx_shutdown 中补充缺失的 tasklet_kill 调用 看门狗中断处理程序（watchdog IRQ handler）可能会调度 TX 清理 tasklet 来执行 cvm_oct_tx_do_cleanup。队列中可能存在尚未执行的 tasklet，它在 cvm_oct_remove() 释放 net_device 结构之后仍可能运行，从而导致在 cvm_oct_tx_do_cleanup() 遍历 cv

AI Predicted 6.5 Difficulty: Moderate EPSS 0.20% · P9

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 4898c560103fb8075c10a8e9d70e0ca26873075e< 32efcb6d5f4e3f030e7b0a3ba5c6c0684dd07486 affected
4898c560103fb8075c10a8e9d70e0ca26873075e< d15226338dfaa84ffff142d32723cdf74d0c47c4 affected
4898c560103fb8075c10a8e9d70e0ca26873075e< a77efd85e0d48c877f66d2bc3ab89cc1b8dacd19 affected
4898c560103fb8075c10a8e9d70e0ca26873075e< b6365e4186322858a82c8713b1d0bd209c8e765a affected
4898c560103fb8075c10a8e9d70e0ca26873075e< 03d12490afd1198310ad0aba42462329832eb739 affected
4898c560103fb8075c10a8e9d70e0ca26873075e< 2c0c9956596e48654bb4855e2a0742748a0826a7 affected
4898c560103fb8075c10a8e9d70e0ca26873075e< 41a79bd9e5a74f8f483b3b206d10567912874fb4 affected
4898c560103fb8075c10a8e9d70e0ca26873075e< b9af44b0d20b2247c4eb0ea5cfca907d643eea50 affected
… +10 more rows
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I. Basic Information for CVE-2026-93279

Vulnerability Information
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Vulnerability Title
staging: octeon: add missing tasklet_kill in cvm_oct_tx_shutdown
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: staging: octeon: add missing tasklet_kill in cvm_oct_tx_shutdown The TX cleanup tasklet can be scheduled by the watchdog IRQ handler to execute cvm_oct_tx_do_cleanup. There can be a pending tasklet in the queue which might run after the cvm_oct_remove() frees net_device structures, causing a use-after-free in cvm_oct_tx_do_cleanup() as it iterates cvm_oct_device[] which is an array of netdevice pointers. Add tasklet_kill() after free_irq() to ensure the tasklet is no longer scheduled or running before teardown proceeds.
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux 4898c560103fb8075c10a8e9d70e0ca26873075e ~ 32efcb6d5f4e3f030e7b0a3ba5c6c0684dd07486 -
Linux Linux 2.6.34 -

II. Public POCs for CVE-2026-93279

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III. Intelligence Information for CVE-2026-93279

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Patches & Fixes for CVE-2026-93279 (8)

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 &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-93279

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