CVE-2024-56600

Kernel memory corruption via dangling IPv6 socket pointer

Published Dec 27, 2024 · Updated Aug 5, 2026

Use-after-free in the IPv6 socket creation path in Linux allows local users to trigger unsafe kernel-memory reuse through failed socket setup. During inet6_create(), sock_init_data() attaches an sk pointer to the socket, but an error frees the sk object without clearing the socket's reference. A low-privileged local account must induce the creation failure and a later dereference; the stale reference enables kernel-memory corruption.

CVSS severity7.8
High
EPSS probability0.24%
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 IPv6 socket creation path in Linux allows local users to trigger unsafe kernel-memory reuse through failed socket setup. During inet6_create(), sock_init_data() attaches an sk pointer to the socket, but an error frees the sk object without clearing the socket's reference. A low-privileged local account must induce the creation failure and a later dereference; the stale reference enables kernel-memory corruption.

The record

CVE
CVE-2024-56600
Published
Dec 27, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 27, 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=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <276a473c956fb55a6f3affa9ff232e10fffa7b43
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <35360255ca30776dee34d9fa764cffa24d0a5f65
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <706b07b7b37f886423846cb38919132090bc40da
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <79e16a0d339532ea832d85798eb036fc4f9e0cea
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <9df99c395d0f55fb444ef39f4d6f194ca437d884
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <f2709d1271cfdf55c670ab5c5982139ab627ddc7
  7. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <f44fceb71d72d29fb00e0ac84cdf9c081b03cd06
  8. Affected versionversion=2.6.12

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <276a473c956fb55a6f3affa9ff232e10fffa7b43; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <35360255ca30776dee34d9fa764cffa24d0a5f65; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <706b07b7b37f886423846cb38919132090bc40da; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <79e16a0d339532ea832d85798eb036fc4f9e0cea; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <9df99c395d0f55fb444ef39f4d6f194ca437d884; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <f2709d1271cfdf55c670ab5c5982139ab627ddc7; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <f44fceb71d72d29fb00e0ac84cdf9c081b03cd06; version=2.6.12

Published CVSS scores

7.8kernel.org 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

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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 exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
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

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Your stack

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