CVE-2024-27414

Kernel memory corruption via stale netlink attribute pointer

Published May 17, 2024 · Updated Aug 5, 2026

An out-of-bounds write in Linux rtnl_bridge_setlink allows local users to corrupt kernel heap memory through a crafted RTM_SETLINK message. Removing a loop break lets attr advance past IFLA_BRIDGE_FLAGS, so the final flags memcpy writes through the last nested netlink attribute, including an invalid one. Reaching the write requires CAP_NET_ADMIN in the governing user namespace, obtainable by an unprivileged local user through a new user and network namespace; corruption can disclose data, alter kernel state, or panic the host.

CVSS severity7.8
High
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

An out-of-bounds write in Linux rtnl_bridge_setlink allows local users to corrupt kernel heap memory through a crafted RTM_SETLINK message. Removing a loop break lets attr advance past IFLA_BRIDGE_FLAGS, so the final flags memcpy writes through the last nested netlink attribute, including an invalid one. Reaching the write requires CAP_NET_ADMIN in the governing user namespace, obtainable by an unprivileged local user through a new user and network namespace; corruption can disclose data, alter kernel state, or panic the host.

The record

CVE
CVE-2024-27414
Published
May 17, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 17, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=00757f58e37b2d9a6f99e15be484712390cd2bab
  2. Affected versionversion=047508edd602921ee8bb0f2aa2100aa2e9bedc75 <a1227b27fcccc99dc44f912b479e01a17e2d7d31
  3. Affected versionversion=5.10.190 <5.10.212
  4. Affected versionversion=5.15.126 <5.15.151
  5. Affected versionversion=5.4.253 <5.4.271
  6. Affected versionversion=6.1.45 <6.1.81
  7. Affected versionversion=6.4.10 <6.5
  8. Affected versionversion=6.5
  9. Affected versionversion=8dfac8071d58447e5cace4c4c6fe493ce2f615f6 <f2261eb994aa5757c1da046b78e3229a3ece0ad9
  10. Affected versionversion=abb0172fa8dc4a4ec51aa992b7269ed65959f310 <882a51a10ecf24ce135d573afa0872aef02c5125
  11. Affected versionversion=ad46d4861ed36315d3d9e838723ba3e367ecc042 <b9fbc44159dfc3e9a7073032752d9e03f5194a6f
  12. Affected versionversion=d73ef2d69c0dba5f5a1cb9600045c873bab1fb7f <167d8642daa6a44b51de17f8ff0f584e1e762db7
  13. Affected versionversion=d73ef2d69c0dba5f5a1cb9600045c873bab1fb7f <743ad091fb46e622f1b690385bb15e3cd3daf874
  14. Affected versionversion=d73ef2d69c0dba5f5a1cb9600045c873bab1fb7f <831bc2728fb48a8957a824cba8c264b30dca1425

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=00757f58e37b2d9a6f99e15be484712390cd2bab; version=047508edd602921ee8bb0f2aa2100aa2e9bedc75 <a1227b27fcccc99dc44f912b479e01a17e2d7d31; version=5.10.190 <5.10.212; version=5.15.126 <5.15.151; version=5.4.253 <5.4.271; version=6.1.45 <6.1.81; version=6.4.10 <6.5; version=6.5; version=8dfac8071d58447e5cace4c4c6fe493ce2f615f6 <f2261eb994aa5757c1da046b78e3229a3ece0ad9; version=abb0172fa8dc4a4ec51aa992b7269ed65959f310 <882a51a10ecf24ce135d573afa0872aef02c5125; version=ad46d4861ed36315d3d9e838723ba3e367ecc042 <b9fbc44159dfc3e9a7073032752d9e03f5194a6f; version=d73ef2d69c0dba5f5a1cb9600045c873bab1fb7f <167d8642daa6a44b51de17f8ff0f584e1e762db7; version=d73ef2d69c0dba5f5a1cb9600045c873bab1fb7f <743ad091fb46e622f1b690385bb15e3cd3daf874; version=d73ef2d69c0dba5f5a1cb9600045c873bab1fb7f <831bc2728fb48a8957a824cba8c264b30dca1425

Published CVSS scores

7.8Linux CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo