---
id: CVE-2024-50299
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  sctp: properly validate chunk size in sctp_sf_ootb()

  A size validation fix similar to that in Commit 50619dbf8db7 ("sctp: add
  size validation when walking chunks") is …
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  sctp: properly validate chunk size in sctp_sf_ootb()

  A size validation fix similar to that in Commit 50619dbf8db7 ("sctp: add
  size validation when walking chunks") is …
severity: high
cvss: 8.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H'
cwe:
  - CWE-908
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 2.6.12, < 4.19.324'
  - 'linux_kernel >= 4.20, < 5.4.286'
  - 'linux_kernel >= 5.5, < 5.10.230'
  - 'linux_kernel >= 5.11, < 5.15.172'
  - 'linux_kernel >= 5.16, < 6.1.117'
  - 'linux_kernel >= 6.2, < 6.6.61'
  - 'linux_kernel >= 6.7, < 6.11.8'
  - linux_kernel = 6.12
patched:
  - linux_kernel 6.11.8
published: '2024-11-19'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T01:19:11.507'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2024-50299'
references:
  - url: 'https://git.kernel.org/stable/c/0ead60804b64f5bd6999eec88e503c6a1a242d41'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/40b283ba76665437bc2ac72079c51b57b25bff9e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/67b9a278b80f71ec62091ded97c6bcbea33b5ec3'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/8820d2d6589f62ee5514793fff9b50c9f8101182'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/9b5d42aeaf1a52f73b003a33da6deef7df34685f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a758aa6a773bb872196bcc3173171ef8996bddf0'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/bf9bff13225baf5f658577f7d985fc4933d79527'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/d3fb3cc83cf313e4f87063ce0f3fea76b071567b'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-265688.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-355557.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-398330.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
  - cve.org
epss: 0.00623
epssPercentile: 0.49672
ingestedAt: '2026-10-15T03:30:12.768Z'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2025-10-01T20:13:57.665904Z'
---

## Overview

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

sctp: properly validate chunk size in sctp_sf_ootb()

A size validation fix similar to that in Commit 50619dbf8db7 ("sctp: add
size validation when walking chunks") is also required in sctp_sf_ootb()
to address a crash reported by syzbot:

  BUG: KMSAN: uninit-value in sctp_sf_ootb+0x7f5/0xce0 net/sctp/sm_statefuns.c:3712
  sctp_sf_ootb+0x7f5/0xce0 net/sctp/sm_statefuns.c:3712
  sctp_do_sm+0x181/0x93d0 net/sctp/sm_sideeffect.c:1166
  sctp_endpoint_bh_rcv+0xc38/0xf90 net/sctp/endpointola.c:407
  sctp_inq_push+0x2ef/0x380 net/sctp/inqueue.c:88
  sctp_rcv+0x3831/0x3b20 net/sctp/input.c:243
  sctp4_rcv+0x42/0x50 net/sctp/protocol.c:1159
  ip_protocol_deliver_rcu+0xb51/0x13d0 net/ipv4/ip_input.c:205
  ip_local_deliver_finish+0x336/0x500 net/ipv4/ip_input.c:233

## Affected

- `linux_kernel >= 2.6.12, < 4.19.324`
- `linux_kernel >= 4.20, < 5.4.286`
- `linux_kernel >= 5.5, < 5.10.230`
- `linux_kernel >= 5.11, < 5.15.172`
- `linux_kernel >= 5.16, < 6.1.117`
- `linux_kernel >= 6.2, < 6.6.61`
- `linux_kernel >= 6.7, < 6.11.8`
- `linux_kernel = 6.12`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.11.8`