CVE-2024-41066

Network service interruption via leaked transmit buffers

Published Jul 29, 2024 · Updated Aug 5, 2026

Memory leak in the Linux kernel ibmvnic driver allows local users to interrupt network service during packet transmission. The ibmvnic transmit path overwrites a non-null tx_buff skb pointer when free_map and tx_buff fall out of sync, leaking the old skb because it checks only the mapped index. Reaching the flaw requires local low-privilege access and an affected IBM virtual NIC; accumulated leaks can stop TCP from sending packets and cause timeouts.

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

Memory leak in the Linux kernel ibmvnic driver allows local users to interrupt network service during packet transmission. The ibmvnic transmit path overwrites a non-null tx_buff skb pointer when free_map and tx_buff fall out of sync, leaking the old skb because it checks only the mapped index. Reaching the flaw requires local low-privilege access and an affected IBM virtual NIC; accumulated leaks can stop TCP from sending packets and cause timeouts.

The record

CVE
CVE-2024-41066
Published
Jul 29, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 29, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=1a64564eee05128f773930649edfdd50cbe80656
  2. Affected versionversion=5.12.17 <5.13
  3. Affected versionversion=5.13.2 <5.14
  4. Affected versionversion=5.14
  5. Affected versionversion=5142c39253385702a4de8f897027e1d76fc333de
  6. Affected versionversion=65d6470d139a6c1655fccb5cbacbeaba8e8ad2f8 <0983d288caf984de0202c66641577b739caad561
  7. Affected versionversion=65d6470d139a6c1655fccb5cbacbeaba8e8ad2f8 <16ad1557cae582e79bb82dddd612d9bdfaa11d4c
  8. Affected versionversion=65d6470d139a6c1655fccb5cbacbeaba8e8ad2f8 <267c61c4afed0ff9a2e83462abad3f41d8ca1f06
  9. Affected versionversion=65d6470d139a6c1655fccb5cbacbeaba8e8ad2f8 <e7b75def33eae61ddaad6cb616c517dc3882eb2a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1a64564eee05128f773930649edfdd50cbe80656; version=5.12.17 <5.13; version=5.13.2 <5.14; version=5.14; version=5142c39253385702a4de8f897027e1d76fc333de; version=65d6470d139a6c1655fccb5cbacbeaba8e8ad2f8 <0983d288caf984de0202c66641577b739caad561; version=65d6470d139a6c1655fccb5cbacbeaba8e8ad2f8 <16ad1557cae582e79bb82dddd612d9bdfaa11d4c; version=65d6470d139a6c1655fccb5cbacbeaba8e8ad2f8 <267c61c4afed0ff9a2e83462abad3f41d8ca1f06; version=65d6470d139a6c1655fccb5cbacbeaba8e8ad2f8 <e7b75def33eae61ddaad6cb616c517dc3882eb2a

Published CVSS scores

5.5NIST NVDCVSS: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 exploitUnconfirmed

Weakness, pattern, technique

CWE-401Missing Release of Memory after Effective Lifetime
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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