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8.8
HIGH CVSS 3.1
CVE-2026-74469
sctp: prevent peer transport count overflow
Overview
Description

In the Linux kernel, the following vulnerability has been resolved: sctp: prevent peer transport count overflow sctp_assoc_add_peer() increments the association's 16-bit transport_count for every new unique peer. Adding the 65,536th transport wraps the count to zero. SCTP sock_diag uses transport_count to reserve the INET_DIAG_PEERS payload, then copies one sockaddr_storage for every entry in transport_addr_list. After the wrap, a diagnostic dump reserves an empty payload and writes 8 MiB of peer addresses past the skb tail. Reject a new unique peer when transport_count has reached U16_MAX. Perform the check after the existing-peer lookup so a duplicate address continues to return its existing transport at the limit.

Details
INFO

Published Date :

Aug. 15, 2026, 1:17 p.m.

Last Modified :

Aug. 19, 2026, 5:21 p.m.

Remotely Exploit :

Yes !

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Impact
Affected Products

The following products are affected by CVE-2026-74469 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 HIGH 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
Prevent SCTP peer transport count overflow to avoid memory corruption and denial of service.
  • Apply the patch for sctp: prevent peer transport count overflow.
  • Update the Linux kernel to a fixed version.
  • Reject new peers when transport count reaches U16_MAX.
References
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-74469.

URL Resource
https://git.kernel.org/stable/c/09e722030e8148ba4ed1e42c6b2ea57bda9f9895
https://git.kernel.org/stable/c/4ba5bf7ed50f235ea4581de8e7a0002f4ed287b0
https://git.kernel.org/stable/c/546221b86ceeba0d8fec92d46a0604bb7b62be07
https://git.kernel.org/stable/c/6201cd1d70f1670c5b31ac506e7ab2fa7b8e7f75
https://git.kernel.org/stable/c/80f48523a0fe42db2e7375dff4e38a25c117090a
https://git.kernel.org/stable/c/b453e00da1211e997b82743d28af7714c59c05c8
https://git.kernel.org/stable/c/bd0e9289e2642f6a5c54faad304ce0f41e926d22
https://git.kernel.org/stable/c/dfea32dd76f390e3155177b0038cc47b01386198
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-74469 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-74469 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-74469 vulnerability anywhere in the article.

  • The Hacker News
CISA Flags Three Linux Kernel Vulnerabilities Exploited in the Wild

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Friday added three security flaws impacting the Linux kernel to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence o ... Read more

Published Date: Sep 19, 2026 (11 hours, 3 minutes ago)
  • The Hacker News
Public Exploits Released for Four Linux Kernel Flaws That Enable Local Root

A security researcher has released working exploit code for four Linux kernel flaws that each let a local user gain root, the highest level of access on a machine. Kernel maintainers have fixed all fo ... Read more

Published Date: Sep 18, 2026 (23 hours, 25 minutes ago)

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-74469 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Aug. 19, 2026

    Action Type Old Value New Value
    Added Reference https://git.kernel.org/stable/c/80f48523a0fe42db2e7375dff4e38a25c117090a
    Added Reference https://git.kernel.org/stable/c/b453e00da1211e997b82743d28af7714c59c05c8
    Added Reference https://git.kernel.org/stable/c/dfea32dd76f390e3155177b0038cc47b01386198
    Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '8f840e47f190cbe61a96945c13e9551048d42cef', 'lessThan': '546221b86ceeba0d8fec92d46a0604bb7b62be07', 'versionType': 'git'}, {'status': 'affected', 'version': '8f840e47f190cbe61a96945c13e9551048d42cef', 'lessThan': '09e722030e8148ba4ed1e42c6b2ea57bda9f9895', 'versionType': 'git'}, {'status': 'affected', 'version': '8f840e47f190cbe61a96945c13e9551048d42cef', 'lessThan': '4ba5bf7ed50f235ea4581de8e7a0002f4ed287b0', 'versionType': 'git'}, {'status': 'affected', 'version': '8f840e47f190cbe61a96945c13e9551048d42cef', 'lessThan': '6201cd1d70f1670c5b31ac506e7ab2fa7b8e7f75', 'versionType': 'git'}, {'status': 'affected', 'version': '8f840e47f190cbe61a96945c13e9551048d42cef', 'lessThan': 'bd0e9289e2642f6a5c54faad304ce0f41e926d22', 'versionType': 'git'}], 'programFiles': ['net/sctp/associola.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.7'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.7', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.151', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.103', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.44', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.8', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/sctp/associola.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '8f840e47f190cbe61a96945c13e9551048d42cef', 'lessThan': 'b453e00da1211e997b82743d28af7714c59c05c8', 'versionType': 'git'}, {'status': 'affected', 'version': '8f840e47f190cbe61a96945c13e9551048d42cef', 'lessThan': 'dfea32dd76f390e3155177b0038cc47b01386198', 'versionType': 'git'}, {'status': 'affected', 'version': '8f840e47f190cbe61a96945c13e9551048d42cef', 'lessThan': '80f48523a0fe42db2e7375dff4e38a25c117090a', 'versionType': 'git'}, {'status': 'affected', 'version': '8f840e47f190cbe61a96945c13e9551048d42cef', 'lessThan': '546221b86ceeba0d8fec92d46a0604bb7b62be07', 'versionType': 'git'}, {'status': 'affected', 'version': '8f840e47f190cbe61a96945c13e9551048d42cef', 'lessThan': '09e722030e8148ba4ed1e42c6b2ea57bda9f9895', 'versionType': 'git'}, {'status': 'affected', 'version': '8f840e47f190cbe61a96945c13e9551048d42cef', 'lessThan': '4ba5bf7ed50f235ea4581de8e7a0002f4ed287b0', 'versionType': 'git'}, {'status': 'affected', 'version': '8f840e47f190cbe61a96945c13e9551048d42cef', 'lessThan': '6201cd1d70f1670c5b31ac506e7ab2fa7b8e7f75', 'versionType': 'git'}, {'status': 'affected', 'version': '8f840e47f190cbe61a96945c13e9551048d42cef', 'lessThan': 'bd0e9289e2642f6a5c54faad304ce0f41e926d22', 'versionType': 'git'}], 'programFiles': ['net/sctp/associola.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.7'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.7', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.265', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.216', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.183', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.151', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.103', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.44', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.8', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/sctp/associola.c'], 'defaultStatus': 'affected'}]
  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Aug. 17, 2026

    Action Type Old Value New Value
    Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '8f840e47f190cbe61a96945c13e9551048d42cef', 'lessThan': '546221b86ceeba0d8fec92d46a0604bb7b62be07', 'versionType': 'git'}, {'status': 'affected', 'version': '8f840e47f190cbe61a96945c13e9551048d42cef', 'lessThan': '09e722030e8148ba4ed1e42c6b2ea57bda9f9895', 'versionType': 'git'}, {'status': 'affected', 'version': '8f840e47f190cbe61a96945c13e9551048d42cef', 'lessThan': '4ba5bf7ed50f235ea4581de8e7a0002f4ed287b0', 'versionType': 'git'}, {'status': 'affected', 'version': '8f840e47f190cbe61a96945c13e9551048d42cef', 'lessThan': '6201cd1d70f1670c5b31ac506e7ab2fa7b8e7f75', 'versionType': 'git'}, {'status': 'affected', 'version': '8f840e47f190cbe61a96945c13e9551048d42cef', 'lessThan': 'bd0e9289e2642f6a5c54faad304ce0f41e926d22', 'versionType': 'git'}], 'programFiles': ['net/sctp/associola.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.7'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.7', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.151', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.103', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.44', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.8', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc6', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/sctp/associola.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '8f840e47f190cbe61a96945c13e9551048d42cef', 'lessThan': '546221b86ceeba0d8fec92d46a0604bb7b62be07', 'versionType': 'git'}, {'status': 'affected', 'version': '8f840e47f190cbe61a96945c13e9551048d42cef', 'lessThan': '09e722030e8148ba4ed1e42c6b2ea57bda9f9895', 'versionType': 'git'}, {'status': 'affected', 'version': '8f840e47f190cbe61a96945c13e9551048d42cef', 'lessThan': '4ba5bf7ed50f235ea4581de8e7a0002f4ed287b0', 'versionType': 'git'}, {'status': 'affected', 'version': '8f840e47f190cbe61a96945c13e9551048d42cef', 'lessThan': '6201cd1d70f1670c5b31ac506e7ab2fa7b8e7f75', 'versionType': 'git'}, {'status': 'affected', 'version': '8f840e47f190cbe61a96945c13e9551048d42cef', 'lessThan': 'bd0e9289e2642f6a5c54faad304ce0f41e926d22', 'versionType': 'git'}], 'programFiles': ['net/sctp/associola.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.7'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.7', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.151', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.103', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.44', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.8', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/sctp/associola.c'], 'defaultStatus': 'affected'}]
  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Aug. 15, 2026

    Action Type Old Value New Value
    Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '8f840e47f190cbe61a96945c13e9551048d42cef', 'lessThan': '546221b86ceeba0d8fec92d46a0604bb7b62be07', 'versionType': 'git'}, {'status': 'affected', 'version': '8f840e47f190cbe61a96945c13e9551048d42cef', 'lessThan': '09e722030e8148ba4ed1e42c6b2ea57bda9f9895', 'versionType': 'git'}, {'status': 'affected', 'version': '8f840e47f190cbe61a96945c13e9551048d42cef', 'lessThan': '4ba5bf7ed50f235ea4581de8e7a0002f4ed287b0', 'versionType': 'git'}, {'status': 'affected', 'version': '8f840e47f190cbe61a96945c13e9551048d42cef', 'lessThan': '6201cd1d70f1670c5b31ac506e7ab2fa7b8e7f75', 'versionType': 'git'}, {'status': 'affected', 'version': '8f840e47f190cbe61a96945c13e9551048d42cef', 'lessThan': 'bd0e9289e2642f6a5c54faad304ce0f41e926d22', 'versionType': 'git'}], 'programFiles': ['net/sctp/associola.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.7'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.7', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.151', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.103', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.44', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.8', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc6', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/sctp/associola.c'], 'defaultStatus': 'affected'}]
    Added Description In the Linux kernel, the following vulnerability has been resolved: sctp: prevent peer transport count overflow sctp_assoc_add_peer() increments the association's 16-bit transport_count for every new unique peer. Adding the 65,536th transport wraps the count to zero. SCTP sock_diag uses transport_count to reserve the INET_DIAG_PEERS payload, then copies one sockaddr_storage for every entry in transport_addr_list. After the wrap, a diagnostic dump reserves an empty payload and writes 8 MiB of peer addresses past the skb tail. Reject a new unique peer when transport_count has reached U16_MAX. Perform the check after the existing-peer lookup so a duplicate address continues to return its existing transport at the limit.
    Added Reference https://git.kernel.org/stable/c/09e722030e8148ba4ed1e42c6b2ea57bda9f9895
    Added Reference https://git.kernel.org/stable/c/4ba5bf7ed50f235ea4581de8e7a0002f4ed287b0
    Added Reference https://git.kernel.org/stable/c/546221b86ceeba0d8fec92d46a0604bb7b62be07
    Added Reference https://git.kernel.org/stable/c/6201cd1d70f1670c5b31ac506e7ab2fa7b8e7f75
    Added Reference https://git.kernel.org/stable/c/bd0e9289e2642f6a5c54faad304ce0f41e926d22
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
Base CVSS Score: 8.8
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact