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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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-debuginfoUpgrade kernel-tools-develUpgrade perf-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernelUpgrade python-perf-debuginfoUpgrade bpftool-debuginfoUpgrade kernel-develUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-headersUpgrade kernel-livepatch-5.10.270-271.1109Upgrade kernel-toolsUpgrade kernel-debuginfo-common-aarch64Upgrade perfUpgrade bpftoolUpgrade python-perfUpgrade kernel-livepatch-5.15.221-157.262 | Oct 19, 2026 | Oct 19, 2026 |
| Amazon_linux_2023 | — | Upgrade kernel-debuginfo-common-x86_64Upgrade kernelUpgrade kernel-tools-debuginfoUpgrade kernel-headersUpgrade kernel-debuginfoUpgrade bpftool-debuginfoUpgrade kernel-modules-extraUpgrade kernel-modules-extra-commonUpgrade kernel-debuginfo-common-aarch64Upgrade bpftoolUpgrade kernel-toolsUpgrade kernel-develUpgrade kernel-tools-develUpgrade perfUpgrade python3-perf-debuginfoUpgrade perf-debuginfoUpgrade kernel-livepatch-6.1.188-233.385Upgrade python3-perf | Oct 13, 2026 | Sep 17, 2026 |
| Debian | — | Upgrade linuxUpgrade linux-6.12 | Sep 30, 2026 | Sep 17, 2026 |
| Redhat_linux | — | No solution exists | Oct 15, 2026 | Sep 17, 2026 |
| Ubuntu | — | Upgrade linux-oracleUpgrade linux-intel-iotg-5.15Upgrade linux-azure-fdeUpgrade linux-bluefieldUpgrade linux-oracle-5.15Upgrade linux-gcpUpgrade linux-aws-5.15Upgrade linux-kvmUpgrade linux-gkeUpgrade linux-gcp-fipsUpgrade linux-ibmUpgrade linux-hwe-7.0Upgrade linux-lowlatency-hwe-5.15Upgrade linux-ibm-5.15Upgrade linux-realtimeUpgrade linux-gcp-5.15Upgrade linux-riscv-5.15Upgrade linux-azure-5.15Upgrade linux-oem-7.0Upgrade linux-nvidiaUpgrade linux-intel-iotgUpgrade linux-azureUpgrade linux-intel-iot-realtimeUpgrade linux-fipsUpgrade linux-riscv-7.0Upgrade linux-aws-fipsUpgrade linux-nvidia-tegraUpgrade linux-riscvUpgrade linux-nvidia-tegra-5.15Upgrade linux-azure-fipsUpgrade linux-lowlatencyUpgrade linuxUpgrade linux-nvidia-tegra-igxUpgrade linux-gkeopUpgrade linux-azure-fde-5.15Upgrade linux-awsUpgrade linux-hwe-5.15 | Nov 3, 2026 | Sep 17, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Sep 30, 2026 | Sep 17, 2026 |
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