CVE-2026-90141Network attack vectorHinoki check available

FTP data-connection manipulation via integer overflow

Published Sep 17, 2026 · Updated Sep 18, 2026

Integer overflow in the Linux IPVS FTP helper allows remote attackers to alter FTP data-connection state through crafted control traffic. The ip_vs_ftp_get_addrport() parser accumulates unchecked decimal digits into 16-bit port and 8-bit address fields, wrapping oversized values into truncated endpoints. An established IPVS NAT FTP control connection is required; one unauthenticated PORT/EPRT command or PASV/EPSV response can misroute or interrupt the data transfer without crashing the kernel.

CVSS severity7.3
High
EPSS probability0.45%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Integer overflow in the Linux IPVS FTP helper allows remote attackers to alter FTP data-connection state through crafted control traffic. The ip_vs_ftp_get_addrport() parser accumulates unchecked decimal digits into 16-bit port and 8-bit address fields, wrapping oversized values into truncated endpoints. An established IPVS NAT FTP control connection is required; one unauthenticated PORT/EPRT command or PASV/EPSV response can misroute or interrupt the data transfer without crashing the kernel.

The record

CVE
CVE-2026-90141
Published
Sep 17, 2026
Updated
Sep 18, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 18, 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 <00bcc6d679262ea42688fba1d7819ea6e56f12ef
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <4aed450adaee3a021db27be94c61fe025b0d05ff
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <50cb9b7263a2ed01f7d2f97818a800c2ee05f661
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b1908bff0faaa94d55be72da65879cad632e8236
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d02de9a7a7e2484da0cf37e50614840623b98a62
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <deaa88fa010ba0dfc554d09e006ddd1ce9945c82
  7. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e625a9477d12baaff4025c5f9989184a907ea8fc
  8. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <fc1493c905d7e0bc8830c1d83915cb7831daf1a1
  9. Affected versionversion=2.6.12

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <00bcc6d679262ea42688fba1d7819ea6e56f12ef; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <4aed450adaee3a021db27be94c61fe025b0d05ff; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <50cb9b7263a2ed01f7d2f97818a800c2ee05f661; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b1908bff0faaa94d55be72da65879cad632e8236; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d02de9a7a7e2484da0cf37e50614840623b98a62; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <deaa88fa010ba0dfc554d09e006ddd1ce9945c82; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e625a9477d12baaff4025c5f9989184a907ea8fc; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <fc1493c905d7e0bc8830c1d83915cb7831daf1a1; version=2.6.12

Published CVSS scores

5.3Amazon LinuxCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
7.3Linux CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

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.

Activity data is delayed. The latest report is Sep 28, 2026.

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No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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