---
id: CVE-2026-98233
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  net/packet: clear RX owner on VNET header error

  Commit 61fad6816fc1 ("net/packet: tpacket_rcv: avoid a producer race
  condition") added rx_owner_map and made tpacket_rc…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  net/packet: clear RX owner on VNET header error

  Commit 61fad6816fc1 ("net/packet: tpacket_rcv: avoid a producer race
  condition") added rx_owner_map and made tpacket_rc…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 61fad6816fc10fb8793a925d5c1256d1c3db0cd2 <
    bb10a0084c03a94364aeec542beddc5d49b59f59
  - >-
    Linux >= 61fad6816fc10fb8793a925d5c1256d1c3db0cd2 <
    b8c0cb3069058c2d67b5c7c833b2833381ecffdc
  - >-
    Linux >= 61fad6816fc10fb8793a925d5c1256d1c3db0cd2 <
    2daa618e7ff19eefcbda281bc4c5998c4140f9cf
  - >-
    Linux >= 61fad6816fc10fb8793a925d5c1256d1c3db0cd2 <
    23cd30498891d29a69ec9b75bd92f8a0f21f1342
  - >-
    Linux >= 61fad6816fc10fb8793a925d5c1256d1c3db0cd2 <
    49a48a5aaf85fe69d2dc3fb334b4854fadf44e39
  - >-
    Linux >= 61fad6816fc10fb8793a925d5c1256d1c3db0cd2 <
    805edbdcb8681da5f7ee43b3c3c809f7a8c31208
  - >-
    Linux >= 61fad6816fc10fb8793a925d5c1256d1c3db0cd2 <
    693209a237fc548791cf402441db8b68d1da7d38
  - >-
    Linux >= 61fad6816fc10fb8793a925d5c1256d1c3db0cd2 <
    33ff111d7ba3beb86e28938d6382bb5beabd865a
  - Linux 2975472e042e0bbfeeabddc5023cb8c011ec5a07
  - Linux 6fb0e4385928900ccb8697748555b3f54bba5193
  - Linux 86137342fd4cf52882842aa8d1318b2661f08e8a
  - Linux b06e4d3ed4044c2facf10a511d809f9aa29d960e
  - Linux >= 4.14.175 < 4.15
  - Linux >= 4.19.114 < 4.20
  - Linux >= 5.4.29 < 5.5
  - Linux >= 5.5.14 < 5.6
  - Linux 5.6
published: '2026-10-06'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T09:18:10.857'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98233'
references:
  - url: 'https://git.kernel.org/stable/c/23cd30498891d29a69ec9b75bd92f8a0f21f1342'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/2daa618e7ff19eefcbda281bc4c5998c4140f9cf'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/33ff111d7ba3beb86e28938d6382bb5beabd865a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/49a48a5aaf85fe69d2dc3fb334b4854fadf44e39'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/693209a237fc548791cf402441db8b68d1da7d38'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/805edbdcb8681da5f7ee43b3c3c809f7a8c31208'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/b8c0cb3069058c2d67b5c7c833b2833381ecffdc'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/bb10a0084c03a94364aeec542beddc5d49b59f59'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-06T08:50:17.435Z'
---

## Overview

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

net/packet: clear RX owner on VNET header error

Commit 61fad6816fc1 ("net/packet: tpacket_rcv: avoid a producer race
condition") added rx_owner_map and made tpacket_rcv() claim a V1 or V2
ring slot before converting the virtio-net header.  If the conversion
fails, the drop path leaves the slot claimed.

With a one-frame TPACKET_V2 ring, an unsupported UDP GSO packet leaves
the only slot unavailable, so the ring also drops the next valid packet.

Clear the ownership bit on this error path.  TPACKET_V3 already clears
its block state here.

## Remediation

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