---
id: CVE-2026-23119
title: 'bonding: provide a net pointer to __skb_flow_dissect()'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  bonding: provide a net pointer to __skb_flow_dissect()

  After 3cbf4ffba5ee ("net: plumb network namespace into __skb_flow_dissect")
  we have to provide a net pointer to …
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 58deb77cc52da9360d20676e68dd215742cbe473 <
    8e53780732ee881394406f79da5263b81eb48f7e
  - >-
    Linux >= 58deb77cc52da9360d20676e68dd215742cbe473 <
    3be945abdd228fd00f6afcf8d137002867a4651b
  - >-
    Linux >= 58deb77cc52da9360d20676e68dd215742cbe473 <
    f4faaa1297ecf3255a8591fff2633df05bd5ec84
  - >-
    Linux >= 58deb77cc52da9360d20676e68dd215742cbe473 <
    0efee0b992f28bd5ee01c7a86ef6a307c42eb907
  - >-
    Linux >= 58deb77cc52da9360d20676e68dd215742cbe473 <
    bc3c8d2493c6f4d2038844dc8b7ee93de050f7fa
  - >-
    Linux >= 58deb77cc52da9360d20676e68dd215742cbe473 <
    de97735a40a144974bf3896ee4cc0270db2e47db
  - >-
    Linux >= 58deb77cc52da9360d20676e68dd215742cbe473 <
    5f9b329096596b7e53e07d041d7fca4cbe1be752
  - Linux 5.5
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-06-10T20:40:46.406465Z'
published: '2026-02-14'
updated: '2026-10-19'
sourceUpdated: '2026-10-19T18:25:31.818Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-23119'
references:
  - url: 'https://git.kernel.org/stable/c/8e53780732ee881394406f79da5263b81eb48f7e'
  - url: 'https://git.kernel.org/stable/c/3be945abdd228fd00f6afcf8d137002867a4651b'
  - url: 'https://git.kernel.org/stable/c/f4faaa1297ecf3255a8591fff2633df05bd5ec84'
  - url: 'https://git.kernel.org/stable/c/0efee0b992f28bd5ee01c7a86ef6a307c42eb907'
  - url: 'https://git.kernel.org/stable/c/bc3c8d2493c6f4d2038844dc8b7ee93de050f7fa'
  - url: 'https://git.kernel.org/stable/c/de97735a40a144974bf3896ee4cc0270db2e47db'
  - url: 'https://git.kernel.org/stable/c/5f9b329096596b7e53e07d041d7fca4cbe1be752'
tags:
  - cve.org
epss: 0.00134
epssPercentile: 0.02574
ingestedAt: '2026-10-19T18:35:50.102Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

bonding: provide a net pointer to __skb_flow_dissect()

After 3cbf4ffba5ee ("net: plumb network namespace into __skb_flow_dissect")
we have to provide a net pointer to __skb_flow_dissect(),
either via skb->dev, skb->sk, or a user provided pointer.

In the following case, syzbot was able to cook a bare skb.

WARNING: net/core/flow_dissector.c:1131 at __skb_flow_dissect+0xb57/0x68b0 net/core/flow_dissector.c:1131, CPU#1: syz.2.1418/11053
Call Trace:
 <TASK>
  bond_flow_dissect drivers/net/bonding/bond_main.c:4093 [inline]
  __bond_xmit_hash+0x2d7/0xba0 drivers/net/bonding/bond_main.c:4157
  bond_xmit_hash_xdp drivers/net/bonding/bond_main.c:4208 [inline]
  bond_xdp_xmit_3ad_xor_slave_get drivers/net/bonding/bond_main.c:5139 [inline]
  bond_xdp_get_xmit_slave+0x1fd/0x710 drivers/net/bonding/bond_main.c:5515
  xdp_master_redirect+0x13f/0x2c0 net/core/filter.c:4388
  bpf_prog_run_xdp include/net/xdp.h:700 [inline]
  bpf_test_run+0x6b2/0x7d0 net/bpf/test_run.c:421
  bpf_prog_test_run_xdp+0x795/0x10e0 net/bpf/test_run.c:1390
  bpf_prog_test_run+0x2c7/0x340 kernel/bpf/syscall.c:4703
  __sys_bpf+0x562/0x860 kernel/bpf/syscall.c:6182
  __do_sys_bpf kernel/bpf/syscall.c:6274 [inline]
  __se_sys_bpf kernel/bpf/syscall.c:6272 [inline]
  __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:6272
  do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
  do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94

## Affected

- `Linux >= 58deb77cc52da9360d20676e68dd215742cbe473 < 8e53780732ee881394406f79da5263b81eb48f7e`
- `Linux >= 58deb77cc52da9360d20676e68dd215742cbe473 < 3be945abdd228fd00f6afcf8d137002867a4651b`
- `Linux >= 58deb77cc52da9360d20676e68dd215742cbe473 < f4faaa1297ecf3255a8591fff2633df05bd5ec84`
- `Linux >= 58deb77cc52da9360d20676e68dd215742cbe473 < 0efee0b992f28bd5ee01c7a86ef6a307c42eb907`
- `Linux >= 58deb77cc52da9360d20676e68dd215742cbe473 < bc3c8d2493c6f4d2038844dc8b7ee93de050f7fa`
- `Linux >= 58deb77cc52da9360d20676e68dd215742cbe473 < de97735a40a144974bf3896ee4cc0270db2e47db`
- `Linux >= 58deb77cc52da9360d20676e68dd215742cbe473 < 5f9b329096596b7e53e07d041d7fca4cbe1be752`
- `Linux 5.5`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.