CVE-2024-26793Public exploit

Kernel memory read-write via GTP registration race

Published Apr 4, 2024 · Updated Aug 5, 2026

Use-after-free in the Linux kernel GTP module allows local users to read or write kernel memory and crash the host through rtnetlink. gtp_init registers gtp_link_ops before gtp_net_ops, and rtnl_link_register releases rtnl_lock so racing RTM_NEWLINK requests enter gtp_newlink before per-network state exists. An unprivileged local user can obtain the required CAP_NET_ADMIN in a new user and network namespace; exploiting the race can disclose heap data, corrupt kernel memory, or stop the system.

CVSS severity5.5
Medium
EPSS probability0.29%
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 in the Linux kernel GTP module allows local users to read or write kernel memory and crash the host through rtnetlink. gtp_init registers gtp_link_ops before gtp_net_ops, and rtnl_link_register releases rtnl_lock so racing RTM_NEWLINK requests enter gtp_newlink before per-network state exists. An unprivileged local user can obtain the required CAP_NET_ADMIN in a new user and network namespace; exploiting the race can disclose heap data, corrupt kernel memory, or stop the system.

The record

CVE
CVE-2024-26793
Published
Apr 4, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 4, 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

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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=459aa660eb1d8ce67080da1983bb81d716aa5a69 <01129059d5141d62fae692f7a336ae3bc712d3eb
  2. Affected versionversion=459aa660eb1d8ce67080da1983bb81d716aa5a69 <5366969a19a8a0d2ffb3d27ef6e8905e5e4216f8
  3. Affected versionversion=459aa660eb1d8ce67080da1983bb81d716aa5a69 <616d82c3cfa2a2146dd7e3ae47bda7e877ee549e
  4. Affected versionversion=459aa660eb1d8ce67080da1983bb81d716aa5a69 <9376d059a705c5dfaac566c2d09891242013ae16
  5. Affected versionversion=459aa660eb1d8ce67080da1983bb81d716aa5a69 <93dd420bc41531c9a31498b9538ca83ba6ec191e
  6. Affected versionversion=459aa660eb1d8ce67080da1983bb81d716aa5a69 <abd32d7f5c0294c1b2454c5a3b13b18446bac627
  7. Affected versionversion=459aa660eb1d8ce67080da1983bb81d716aa5a69 <e668b92a3a01429923fd5ca13e99642aab47de69
  8. Affected versionversion=459aa660eb1d8ce67080da1983bb81d716aa5a69 <ec92aa2cab6f0048f10d6aa4f025c5885cb1a1b6
  9. Affected versionversion=4.7

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=459aa660eb1d8ce67080da1983bb81d716aa5a69 <01129059d5141d62fae692f7a336ae3bc712d3eb; version=459aa660eb1d8ce67080da1983bb81d716aa5a69 <5366969a19a8a0d2ffb3d27ef6e8905e5e4216f8; version=459aa660eb1d8ce67080da1983bb81d716aa5a69 <616d82c3cfa2a2146dd7e3ae47bda7e877ee549e; version=459aa660eb1d8ce67080da1983bb81d716aa5a69 <9376d059a705c5dfaac566c2d09891242013ae16; version=459aa660eb1d8ce67080da1983bb81d716aa5a69 <93dd420bc41531c9a31498b9538ca83ba6ec191e; version=459aa660eb1d8ce67080da1983bb81d716aa5a69 <abd32d7f5c0294c1b2454c5a3b13b18446bac627; version=459aa660eb1d8ce67080da1983bb81d716aa5a69 <e668b92a3a01429923fd5ca13e99642aab47de69; version=459aa660eb1d8ce67080da1983bb81d716aa5a69 <ec92aa2cab6f0048f10d6aa4f025c5885cb1a1b6; version=4.7

Published CVSS scores

5.5Amazon LinuxCVSS: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.

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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 exploitPublished

Weakness, pattern, technique

T1068Exploitation for Privilege Escalation

Public exploit references

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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