CVE-2024-26748

Kernel memory corruption via zero-packet double free

Published Apr 3, 2024 · Updated Aug 5, 2026

Double free in the Linux kernel cdns3 USB gadget driver allows local users to corrupt kernel memory via exact-multiple transfers. In cdns3_gadget_giveback, usb_gadget_giveback_request frees a driver-allocated zero-length request, then cdns3_gadget_ep_free_request frees it again. The path requires a configured Cadence USB gadget controller and a locally queued transfer whose length is an exact multiple of the endpoint maximum packet size; exploitation can expose or overwrite kernel memory, elevate privileges, or panic the kernel.

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

Double free in the Linux kernel cdns3 USB gadget driver allows local users to corrupt kernel memory via exact-multiple transfers. In cdns3_gadget_giveback, usb_gadget_giveback_request frees a driver-allocated zero-length request, then cdns3_gadget_ep_free_request frees it again. The path requires a configured Cadence USB gadget controller and a locally queued transfer whose length is an exact multiple of the endpoint maximum packet size; exploitation can expose or overwrite kernel memory, elevate privileges, or panic the kernel.

The record

CVE
CVE-2024-26748
Published
Apr 3, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-415, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 3, 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=5.4
  2. Affected versionversion=7733f6c32e36ff9d7adadf40001039bf219b1cbe <1e204a8e9eb514e22a6567fb340ebb47df3f3a48
  3. Affected versionversion=7733f6c32e36ff9d7adadf40001039bf219b1cbe <3a2a909942b5335b7ea66366d84261b3ed5f89c8
  4. Affected versionversion=7733f6c32e36ff9d7adadf40001039bf219b1cbe <5fd9e45f1ebcd57181358af28506e8a661a260b3
  5. Affected versionversion=7733f6c32e36ff9d7adadf40001039bf219b1cbe <70e8038813f9d3e72df966748ebbc40efe466019
  6. Affected versionversion=7733f6c32e36ff9d7adadf40001039bf219b1cbe <92d20406a3d4ff3e8be667c79209dc9ed31df5b3
  7. Affected versionversion=7733f6c32e36ff9d7adadf40001039bf219b1cbe <9a52b694b066f299d8b9800854a8503457a8b64c
  8. Affected versionversion=7733f6c32e36ff9d7adadf40001039bf219b1cbe <aad6132ae6e4809e375431f8defd1521985e44e7

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.4; version=7733f6c32e36ff9d7adadf40001039bf219b1cbe <1e204a8e9eb514e22a6567fb340ebb47df3f3a48; version=7733f6c32e36ff9d7adadf40001039bf219b1cbe <3a2a909942b5335b7ea66366d84261b3ed5f89c8; version=7733f6c32e36ff9d7adadf40001039bf219b1cbe <5fd9e45f1ebcd57181358af28506e8a661a260b3; version=7733f6c32e36ff9d7adadf40001039bf219b1cbe <70e8038813f9d3e72df966748ebbc40efe466019; version=7733f6c32e36ff9d7adadf40001039bf219b1cbe <92d20406a3d4ff3e8be667c79209dc9ed31df5b3; version=7733f6c32e36ff9d7adadf40001039bf219b1cbe <9a52b694b066f299d8b9800854a8503457a8b64c; version=7733f6c32e36ff9d7adadf40001039bf219b1cbe <aad6132ae6e4809e375431f8defd1521985e44e7

Published CVSS scores

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

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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-415Double 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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