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CVE-2026-80694— net: ethernet: mtk_eth_soc: pass eth to mtk_handle_irq_rx in poll_controller

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.

Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel 4.8版本存在安全漏洞，该漏洞源于mtk_eth_soc驱动中mtk_poll_controller函数将net_device指针错误传递给期望mtk_eth指针的mtk_handle_irq_rx函数，可能导致启用CONFIG_NET_POLL_CONTROLLER并调用ndo_poll_controller时系统崩溃。

CVSS 9.8 · Critical EPSS 0.67% · P51

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux 8186f6e382d8719d0a4bc0ef218c4dd7cf55b496< 3bd58ac9ca0c552651f533c1bd280dd19ae7d4e8 affected
8186f6e382d8719d0a4bc0ef218c4dd7cf55b496< 276f1f180f55d56cf5992a581e20ed2b3dfa6ced affected
8186f6e382d8719d0a4bc0ef218c4dd7cf55b496< 7eb46318d53940dab63dea7130e720b67a656104 affected
8186f6e382d8719d0a4bc0ef218c4dd7cf55b496< e095f249e2209674f6366f6db0383a2b96e19239 affected
4.8 affected
< 4.8 unaffected
6.12.103≤ 6.12.* unaffected
6.18.44≤ 6.18.* unaffected
… +2 more rows
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I. Basic Information for CVE-2026-80694

Vulnerability Information
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Vulnerability Title
net: ethernet: mtk_eth_soc: pass eth to mtk_handle_irq_rx in poll_controller
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: ethernet: mtk_eth_soc: pass eth to mtk_handle_irq_rx in poll_controller mtk_handle_irq_rx expects a struct mtk_eth * (matching the request_irq cookie), but mtk_poll_controller incorrectly passed the net_device *. Calling ndo_poll_controller with CONFIG_NET_POLL_CONTROLLER enabled would then crash.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel 4.8版本存在安全漏洞，该漏洞源于mtk_eth_soc驱动中mtk_poll_controller函数将net_device指针错误传递给期望mtk_eth指针的mtk_handle_irq_rx函数，可能导致启用CONFIG_NET_POLL_CONTROLLER并调用ndo_poll_controller时系统崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 8186f6e382d8719d0a4bc0ef218c4dd7cf55b496 ~ 3bd58ac9ca0c552651f533c1bd280dd19ae7d4e8 -
Linux Linux 4.8 -

II. Public POCs for CVE-2026-80694

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III. Intelligence Information for CVE-2026-80694

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Patches & Fixes for CVE-2026-80694 (4)

Same Patch Batch · Linux · 2026-08-28 · 135 CVEs total

CVE-2026-80668 9.8 CRITICAL netfilter: nf_conntrack_expect: use conntrack GC to reap expectations
CVE-2026-80600 9.8 CRITICAL batman-adv: dat: acquire ARP hw source only after skb realloc
CVE-2026-80634 9.8 CRITICAL netfilter: flowtable: avoid num_encaps underflow on bridge VLAN untag
CVE-2026-80673 9.8 CRITICAL ntfs: bound the look-ahead attribute-list entry in ntfs_external_attr_find()
CVE-2026-80630 9.8 CRITICAL net/sched: sch_fq_codel: Do not call qdisc_tree_reduce_backlog during peek before restorin
CVE-2026-80681 9.8 CRITICAL vxlan: re-fetch eth header after route_shortcircuit()
CVE-2026-80674 9.8 CRITICAL ntfs: validate resident attribute lists and harden the validator
CVE-2026-80609 9.8 CRITICAL qede: fix out-of-bounds check for cqe->len_list[]
CVE-2026-80714 9.8 CRITICAL ipvs: do not propagate one-packet flag to synced conns
CVE-2026-80612 9.8 CRITICAL net: lwtunnel: Drop skb metadata before LWT encapsulation
CVE-2026-80617 9.8 CRITICAL net: airoha: fix foe_check_time allocation size
CVE-2026-80693 9.3 CRITICAL idpf: bound interrupt-vector register fill to the allocated array
CVE-2026-80671 9.3 CRITICAL perf sched: Fix register_pid() overflow, strcpy, and BUG_ON
CVE-2026-80684 9.3 CRITICAL KVM: s390: pci: Fix NULL dereference on AIBV allocation failure
CVE-2026-80670 9.1 CRITICAL perf tools: Use perf_env__get_cpu_topology() in machine__resolve()
CVE-2026-80603 9.1 CRITICAL netfilter: nf_conntrack_irc: fix parse_dcc() off-by-one OOB read
CVE-2026-80672 8.8 HIGH ntfs: fix u16 truncation of restart-area length check
CVE-2026-80633 8.8 HIGH iommufd: Take dma_resv lock before dma_buf_unpin() in release path
CVE-2026-80692 8.8 HIGH Bluetooth: hci_sync: hold conn in hci_connect_acl/le_sync() callbacks
CVE-2026-80683 8.8 HIGH Bluetooth: SCO: give the socket its own sco_conn reference

Showing top 20 of 135 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-80694

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