CVE-2026-98381— veth: manage XDP program pointers during channel resize
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： veth：在调整通道大小时管理 XDP 程序指针 函数在移除接收队列（RX queues）时会释放 XDP 相关资源，但未清除 指针。如果随后将该 XDP 程序分离或替换，在调用 释放旧程序后，这些队列仍保留指向已释放内存的旧指针。此后若增加通道数量以重新启用 NAPI 机制，则可能执行已释放的 XDP 程序，从而导致严重错误。 BUG: 无法处理页错误，地址为：ffffc90000256048 Oops: Oops: 0000 [#1] SMP KASAN NOPTI
Possible ATT&CK Techniques 2 AI
T1203 · Exploitation for Client Execution T1499 · Endpoint Denial of ServiceAffected Version Matrix 16
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 4752eeb3d891c27905a8fdf4d80e899c0efd4ec7< 7a8e143109ff2736dc79e41dcd55af7ceab7520a |
affected |
4752eeb3d891c27905a8fdf4d80e899c0efd4ec7< 1a5c5b9c64ba5f39dba55da6e12561ca56eeb758 |
affected | ||
4752eeb3d891c27905a8fdf4d80e899c0efd4ec7< f0e8dba8c224981e53c792c6b3dbb7604fb2c2c6 |
affected | ||
4752eeb3d891c27905a8fdf4d80e899c0efd4ec7< 3c10a5dd0d38f506f671dbb59e9d0ee4c72076f9 |
affected | ||
4752eeb3d891c27905a8fdf4d80e899c0efd4ec7< 25bb7c36225220d30f404d7e29d2e052bc5f4b99 |
affected | ||
4752eeb3d891c27905a8fdf4d80e899c0efd4ec7< 43f6b647f209591b1e3f726bb16b8dcba6b95908 |
affected | ||
4752eeb3d891c27905a8fdf4d80e899c0efd4ec7< 7104a370714346b667712913dc16abf14bbc97ed |
affected | ||
5.15 |
affected | ||
| … +8 more rows | |||
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I. Basic Information for CVE-2026-98381
Vulnerability Information
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Vulnerability Title
veth: manage XDP program pointers during channel resize
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
veth: manage XDP program pointers during channel resize
veth_set_channels() tears down XDP resources for removed RX queues
without clearing rq->xdp_prog. If the program is then detached or
replaced, those queues keep the old pointer after bpf_prog_put().
A later channel increase can re-enable NAPI and run the freed program.
BUG: unable to handle page fault for address: ffffc90000256048
Oops: Oops: 0000 [#1] SMP KASAN NOPTI
RIP: veth_xdp_rcv_skb (include/linux/filter.h:779
include/net/xdp.h:696 drivers/net/veth.c:820)
Call Trace:
veth_xdp_rcv (drivers/net/veth.c:941)
veth_poll (drivers/net/veth.c:986)
__napi_poll (net/core/dev.c:7787)
net_rx_action (net/core/dev.c:7850 net/core/dev.c:8007)
handle_softirqs (kernel/softirq.c:645)
Kernel panic - not syncing: Fatal exception in interrupt
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-2026-98381
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Patches & Fixes for CVE-2026-98381 (7)
Same Patch Batch · Linux · 2026-10-09 · 10 CVEs total
| CVE-2026-98384 | bpf: Fix out-of-bounds read of sk_protocol in bpf_sock_destroy() | |
| CVE-2026-98383 | bpf: Disallow bpf_skb_pull_data() for LWT_SEG6LOCAL | |
| CVE-2026-98382 | bpf: Reject dev-bound-only programs on other devices | |
| CVE-2026-98380 | net/sched: reject IDR error pointers when deleting actions | |
| CVE-2026-98378 | bpf: Skip unsettled links in link iterator | |
| CVE-2026-98379 | netfilter: ip6t_rpfilter: reject routes without inet6_dev | |
| CVE-2026-98377 | vlan: require the MAC header to be present in __vlan_insert_inner_tag() | |
| CVE-2026-98376 | bpf: Use array_map_meta_equal for percpu array inner map replacement | |
| CVE-2026-98375 | xen/netfront: drop RX packets with a short Ethernet header |
IV. Related Vulnerabilities
Same product: Linux
-
CVE-2026-98384
bpf: Fix out-of-bounds read of sk_protocol in bpf_sock_destr -
CVE-2026-98383
bpf: Disallow bpf_skb_pull_data() for LWT_SEG6LOCAL -
CVE-2026-98382
bpf: Reject dev-bound-only programs on other devices -
CVE-2026-98380
net/sched: reject IDR error pointers when deleting actions -
CVE-2026-98378
bpf: Skip unsettled links in link iterator
Same vendor: Linux
-
CVE-2026-98384
bpf: Fix out-of-bounds read of sk_protocol in bpf_sock_destr -
CVE-2026-98383
bpf: Disallow bpf_skb_pull_data() for LWT_SEG6LOCAL -
CVE-2026-98382
bpf: Reject dev-bound-only programs on other devices -
CVE-2026-98380
net/sched: reject IDR error pointers when deleting actions -
CVE-2026-98378
bpf: Skip unsettled links in link iterator
V. Comments for CVE-2026-98381
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