---
id: CVE-2026-98384
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  bpf: Fix out-of-bounds read of sk_protocol in bpf_sock_destroy()

  sk_protocol lives in struct sock, not in struct sock_common
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  bpf: Fix out-of-bounds read of sk_protocol in bpf_sock_destroy()

  sk_protocol lives in struct sock, not in struct sock_common. A timewait
  or request sock handed to bpf_…
severity: medium
published: '2026-10-09'
updated: '2026-10-09'
sourceUpdated: '2026-10-09T08:16:56.940'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98384'
references:
  - url: 'https://git.kernel.org/stable/c/01b245ba016d44861690594e10f67e026ce8552f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/2534a5e5d360c2b10203cfa80f4ab9d021e48f2f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/5b4eb82475ae17d55974235c09e97044829426a8'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/91a482a81eabddebf5430cbbdf12027e1a91b767'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a9651704c6fd64590b5ad4fbe7c3768accf95993'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98384.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-98384'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2548394'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-98384'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98384'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98384.mbox
tags:
  - nvd
  - csaf
  - vex
  - red-hat
  - cve.org
ingestedAt: '2026-10-09T08:29:41.352Z'
vendor: Red Hat
product: Red Hat Enterprise Linux 9
affected:
  - enterprise_linux 10
  - enterprise_linux 6
  - enterprise_linux 9
  - openshift_container_platform 4
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cvssSource: vendor
cwe:
  - CWE-125
epss: 0.00156
epssPercentile: 0.0473
---

## Overview

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

bpf: Fix out-of-bounds read of sk_protocol in bpf_sock_destroy()

sk_protocol lives in struct sock, not in struct sock_common. A timewait
or request sock handed to bpf_sock_destroy() by the tcp iterator is
neither, so reading sk->sk_protocol runs past the object:

==================================================================
BUG: KASAN: slab-out-of-bounds in bpf_sock_destroy+0xc7/0xe0
Read of size 2 at addr ffff8881047d11b4 by task test_progs/428

Tainted: [W]=WARN
Call Trace:
 <TASK>
 dump_stack_lvl+0x91/0xf0
 print_report+0xd1/0x630
 kasan_report+0xf3/0x130
 __asan_report_load2_noabort+0x14/0x30
 bpf_sock_destroy+0xc7/0xe0
 bpf_prog_c3dd61f9d9cd9f37_iter_tcp6_timewait+0x9f/0xb7
 bpf_iter_run_prog+0x538/0xde0
 bpf_iter_tcp_seq_show+0x26b/0x4b0
 bpf_seq_read+0x424/0x1210
 vfs_read+0x197/0xe40
 ksys_read+0x119/0x240
 __x64_sys_read+0x72/0xc0
 x64_sys_call+0x647/0x27e0
 do_syscall_64+0xe5/0x610
 entry_SYSCALL_64_after_hwframe+0x76/0x7e

Only check sk_protocol on full socks. tcp_abort() already knows how to
deal with TIME_WAIT and NEW_SYN_RECV socks. Also fix the comment, it
never matched the code.

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-10-18 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98384.json)