CVE-2024-46717

Kernel memory corruption via SHAMPO page double-release

Published Sep 18, 2024 · Updated Aug 5, 2026

Page double release in Linux kernel mlx5e SHAMPO receive handling allows attackers to corrupt kernel memory during packet processing. In mlx5e_handle_rx_cqe_mpwrq_shampo(), the code forms an skb from a regular data page but later releases the header_index SHAMPO page, causing that header page to be released more than once. The path requires no prior skb, a zero header size, and the last fragment of a SHAMPO header page; published material does not identify a deterministic post-corruption outcome.

CVSS severity5.5
Medium
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Page double release in Linux kernel mlx5e SHAMPO receive handling allows attackers to corrupt kernel memory during packet processing. In mlx5e_handle_rx_cqe_mpwrq_shampo(), the code forms an skb from a regular data page but later releases the header_index SHAMPO page, causing that header page to be released more than once. The path requires no prior skb, a zero header size, and the last fragment of a SHAMPO header page; published material does not identify a deterministic post-corruption outcome.

The record

CVE
CVE-2024-46717
Published
Sep 18, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 18, 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=5.16.6 <5.17
  2. Affected versionversion=5.17
  3. Affected versionversion=7957837b816f11eecb9146235bb0715478f4c81f <03924d117625ecb10ee3c9b65930bcb2c37ae629
  4. Affected versionversion=7957837b816f11eecb9146235bb0715478f4c81f <70bd03b89f20b9bbe51a7f73c4950565a17a45f7
  5. Affected versionversion=7957837b816f11eecb9146235bb0715478f4c81f <ae9018e3f61ba5cc1f08a6e51d3c0bef0a79f3ab
  6. Affected versionversion=7957837b816f11eecb9146235bb0715478f4c81f <c909ab41df2b09cde919801c7a7b6bb2cc37ea22
  7. Affected versionversion=a4161e4861132d5b324746a260283e87f2d65daf

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=5.16.6 <5.17; version=5.17; version=7957837b816f11eecb9146235bb0715478f4c81f <03924d117625ecb10ee3c9b65930bcb2c37ae629; version=7957837b816f11eecb9146235bb0715478f4c81f <70bd03b89f20b9bbe51a7f73c4950565a17a45f7; version=7957837b816f11eecb9146235bb0715478f4c81f <ae9018e3f61ba5cc1f08a6e51d3c0bef0a79f3ab; version=7957837b816f11eecb9146235bb0715478f4c81f <c909ab41df2b09cde919801c7a7b6bb2cc37ea22; version=a4161e4861132d5b324746a260283e87f2d65daf

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
9.8kernel.orgCVSS:3.1/AV:N/AC:L/PR:N/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)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

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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