CVE-2024-26735

Local kernel crash via premature netlink registration

Published Apr 3, 2024 · Updated May 11, 2026

Use-after-free and null-pointer dereference in affected Linux kernel releases allow local users to crash the kernel through SRv6 netlink requests. The seg6_init function registered its Generic Netlink family before seg6_net_ops, allowing a request during that interval to access absent or freed per-network SRv6 state. Low-privileged local access is sufficient, no user interaction is required, and the documented consequence is an availability interruption.

CVSS severity5.5
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free and null-pointer dereference in affected Linux kernel releases allow local users to crash the kernel through SRv6 netlink requests. The seg6_init function registered its Generic Netlink family before seg6_net_ops, allowing a request during that interval to access absent or freed per-network SRv6 state. Low-privileged local access is sufficient, no user interaction is required, and the documented consequence is an availability interruption.

The record

CVE
CVE-2024-26735
Published
Apr 3, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, CWE-416, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 3, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=4.10
  2. Affected versionversion=915d7e5e5930b4f01d0971d93b9b25ed17d221aa <02b08db594e8218cfbc0e4680d4331b457968a9b
  3. Affected versionversion=915d7e5e5930b4f01d0971d93b9b25ed17d221aa <5559cea2d5aa3018a5f00dd2aca3427ba09b386b
  4. Affected versionversion=915d7e5e5930b4f01d0971d93b9b25ed17d221aa <65c38f23d10ff79feea1e5d50b76dc7af383c1e6
  5. Affected versionversion=915d7e5e5930b4f01d0971d93b9b25ed17d221aa <82831e3ff76ef09fb184eb93b79a3eb3fb284f1d
  6. Affected versionversion=915d7e5e5930b4f01d0971d93b9b25ed17d221aa <8391b9b651cfdf80ab0f1dc4a489f9d67386e197
  7. Affected versionversion=915d7e5e5930b4f01d0971d93b9b25ed17d221aa <91b020aaa1e59bfb669d34c968e3db3d5416bcee
  8. Affected versionversion=915d7e5e5930b4f01d0971d93b9b25ed17d221aa <953f42934533c151f440cd32390044d2396b87aa
  9. Affected versionversion=915d7e5e5930b4f01d0971d93b9b25ed17d221aa <9e02973dbc6a91e40aa4f5d87b8c47446fbfce44

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.10; version=915d7e5e5930b4f01d0971d93b9b25ed17d221aa <02b08db594e8218cfbc0e4680d4331b457968a9b; version=915d7e5e5930b4f01d0971d93b9b25ed17d221aa <5559cea2d5aa3018a5f00dd2aca3427ba09b386b; version=915d7e5e5930b4f01d0971d93b9b25ed17d221aa <65c38f23d10ff79feea1e5d50b76dc7af383c1e6; version=915d7e5e5930b4f01d0971d93b9b25ed17d221aa <82831e3ff76ef09fb184eb93b79a3eb3fb284f1d; version=915d7e5e5930b4f01d0971d93b9b25ed17d221aa <8391b9b651cfdf80ab0f1dc4a489f9d67386e197; version=915d7e5e5930b4f01d0971d93b9b25ed17d221aa <91b020aaa1e59bfb669d34c968e3db3d5416bcee; version=915d7e5e5930b4f01d0971d93b9b25ed17d221aa <953f42934533c151f440cd32390044d2396b87aa; version=915d7e5e5930b4f01d0971d93b9b25ed17d221aa <9e02973dbc6a91e40aa4f5d87b8c47446fbfce44

Published CVSS scores

5.5NIST National Vulnerability DatabaseCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
CWE-416Use After Free
T1499Endpoint Denial of Service

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

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Your stack

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