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CVE-2026-90141

HIGHCVSS 7.3/10

Last modified

CVE-2026-90141 is a high-severity vulnerability rated 7.3/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: ipvs: fix integer overflow in ftp helper port/address parsing ip_vs_ftp_get_addrport() accumulates decimal digits into a __u16 (hport) and into unsigned char (p[]) without checking for overflow. A crafted FTP PASV/EPSV response with an over-long port or address octet wraps the value, so the helper configures the data connection with a truncated port/address. The netfilter conntrack FTP helper had the same defect, fixed in commit 2b413fc689ba ("netfilter: nf_conntrack_ftp: avoid u16 overflows"). Apply the equivalent fix here: widen the port accumulator to u32 and reject values above 65535, and reject address octets above 255..

Description

In the Linux kernel, the following vulnerability has been resolved: ipvs: fix integer overflow in ftp helper port/address parsing ip_vs_ftp_get_addrport() accumulates decimal digits into a __u16 (hport) and into unsigned char (p[]) without checking for overflow. A crafted FTP PASV/EPSV response with an over-long port or address octet wraps the value, so the helper configures the data connection with a truncated port/address. The netfilter conntrack FTP helper had the same defect, fixed in commit 2b413fc689ba ("netfilter: nf_conntrack_ftp: avoid u16 overflows"). Apply the equivalent fix here: widen the port accumulator to u32 and reject values above 65535, and reject address octets above 255.

Metrics

CVSS 3.1
7.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < d02de9a7a7e2484da0cf37e50614840623b98a62; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < fc1493c905d7e0bc8830c1d83915cb7831daf1a1; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 50cb9b7263a2ed01f7d2f97818a800c2ee05f661; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < deaa88fa010ba0dfc554d09e006ddd1ce9945c82; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 00bcc6d679262ea42688fba1d7819ea6e56f12ef; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 4aed450adaee3a021db27be94c61fe025b0d05ff; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < b1908bff0faaa94d55be72da65879cad632e8236; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < e625a9477d12baaff4025c5f9989184a907ea8fc
LinuxLinux2.6.12

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-90141?
In the Linux kernel, the following vulnerability has been resolved: ipvs: fix integer overflow in ftp helper port/address parsing ip_vs_ftp_get_addrport() accumulates decimal digits into a __u16 (hport) and into unsigned char (p[]) without checking for overflow. A crafted FTP PASV/EPSV response with an over-long port or address octet wraps the value, so the helper configures the data connection with a truncated port/address. The netfilter conntrack FTP helper had the same defect, fixed in commit 2b413fc689ba ("netfilter: nf_conntrack_ftp: avoid u16 overflows"). Apply the equivalent fix here: widen the port accumulator to u32 and reject values above 65535, and reject address octets above 255.
How severe is CVE-2026-90141?
CVE-2026-90141 has a CVSS score of 7.3/10 (HIGH severity).
How do I fix CVE-2026-90141?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST