PT-2026-72609 · Git+4 · Kernel+167
CVE-2026-72421
·
Published
2026-08-15
·
Updated
2026-08-18
CVSS v3.1
10
Critical
| Vector | AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
An issue exists in the IPv4 forwarding information base (fib) where error routes in the local or main tables may be ignored. When
CONFIG IP MULTIPLE TABLES is enabled and no routing rules are configured, the fib lookup() function performs lookups across two tables. Because the initial lookup does not terminate correctly upon encountering an error route, the result can be overwritten by a subsequent route found in the default table, leading to inconsistent routing behavior.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
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Related Identifiers
Affected Products
Kernel
Linux
Linux-Allwinner-5.19
Linux-Aws
Linux-Aws-5.0
Linux-Aws-5.11
Linux-Aws-5.13
Linux-Aws-5.15
Linux-Aws-5.19
Linux-Aws-5.3
Linux-Aws-5.4
Linux-Aws-5.8
Linux-Aws-6.14
Linux-Aws-6.17
Linux-Aws-6.2
Linux-Aws-6.5
Linux-Aws-6.8
Linux-Aws-7.0
Linux-Aws-Fips
Linux-Aws-Hwe
Linux-Azure
Linux-Azure-4.15
Linux-Azure-5.11
Linux-Azure-5.13
Linux-Azure-5.15
Linux-Azure-5.19
Linux-Azure-5.3
Linux-Azure-5.4
Linux-Azure-5.8
Linux-Azure-6.11
Linux-Azure-6.14
Linux-Azure-6.17
Linux-Azure-6.2
Linux-Azure-6.5
Linux-Azure-6.8
Linux-Azure-7.0
Linux-Azure-Edge
Linux-Azure-Fde
Linux-Azure-Fde-5.15
Linux-Azure-Fde-5.19
Linux-Azure-Fde-6.14
Linux-Azure-Fde-6.17
Linux-Azure-Fde-6.2
Linux-Azure-Fde-6.8
Linux-Azure-Fde-7.0
Linux-Azure-Fips
Linux-Azure-Nvidia
Linux-Azure-Nvidia-6.14
Linux-Bluefield
Linux-Fips
Linux-Gcp
Linux-Gcp-4.15
Linux-Gcp-5.11
Linux-Gcp-5.13
Linux-Gcp-5.15
Linux-Gcp-5.19
Linux-Gcp-5.3
Linux-Gcp-5.4
Linux-Gcp-5.8
Linux-Gcp-6.11
Linux-Gcp-6.14
Linux-Gcp-6.17
Linux-Gcp-6.2
Linux-Gcp-6.5
Linux-Gcp-6.8
Linux-Gcp-7.0
Linux-Gcp-Fips
Linux-Gke
Linux-Gke-4.15
Linux-Gkeop-5.15
Linux-Gke-5.4
Linux-Gkeop
Linux-Hwe
Linux-Hwe-5.11
Linux-Hwe-5.13
Linux-Hwe-5.15
Linux-Hwe-5.19
Linux-Hwe-5.4
Linux-Hwe-5.8
Linux-Hwe-6.11
Linux-Hwe-6.14
Linux-Hwe-6.17
Linux-Hwe-6.2
Linux-Hwe-6.5
Linux-Hwe-6.8
Linux-Hwe-7.0
Linux-Hwe-Edge
Linux-Ibm
Linux-Ibm-5.15
Linux-Ibm-5.4
Linux-Ibm-6.8
Linux-Intel-5.13
Linux-Intel-Iot-Realtime
Linux-Intel-Iotg
Linux-Intel-Iotg-5.15
Linux-Iot
Linux-Kvm
Linux-Lowlatency
Linux-Lowlatency-Hwe-5.15
Linux-Lowlatency-Hwe-5.19
Linux-Lowlatency-Hwe-6.11
Linux-Lowlatency-Hwe-6.2
Linux-Lowlatency-Hwe-6.5
Linux-Lowlatency-Hwe-6.8
Linux-Lts
Linux-Lts-Xenial
Linux-Nvidia
Linux-Nvidia-6.11
Linux-Nvidia-6.17
Linux-Nvidia-6.2
Linux-Nvidia-6.5
Linux-Nvidia-6.8
Linux-Nvidia-7.0
Linux-Nvidia-Bos
Linux-Nvidia-Lowlatency
Linux-Nvidia-Tegra
Linux-Nvidia-Tegra-5.15
Linux-Nvidia-Tegra-Igx
Linux-Oem
Linux-Oem-5.10
Linux-Oem-5.13
Linux-Oem-5.14
Linux-Oem-5.17
Linux-Oem-5.6
Linux-Oem-6.0
Linux-Oem-6.1
Linux-Oem-6.11
Linux-Oem-6.14
Linux-Oem-6.17
Linux-Oem-6.5
Linux-Oem-6.8
Linux-Oem-7.0
Linux-Oracle
Linux-Oracle-5.0
Linux-Oracle-5.11
Linux-Oracle-5.13
Linux-Oracle-5.15
Linux-Oracle-5.3
Linux-Oracle-5.4
Linux-Oracle-5.8
Linux-Oracle-6.14
Linux-Oracle-6.17
Linux-Oracle-6.5
Linux-Oracle-6.8
Linux-Oracle-7.0
Linux-Raspi
Linux-Raspi-5.4
Linux-Raspi-Realtime
Linux-Raspi2
Linux-Realtime
Linux-Realtime-6.14
Linux-Realtime-6.17
Linux-Realtime-6.8
Linux-Riscv
Linux-Riscv-5.11
Linux-Riscv-5.15
Linux-Riscv-5.19
Linux-Riscv-5.8
Linux-Riscv-6.14
Linux-Riscv-6.17
Linux-Riscv-6.5
Linux-Riscv-6.8
Linux-Riscv-7.0
Linux-Starfive-5.19
Linux-Starfive-6.2
Linux-Starfive-6.5
Linux-Xilinx
Linux-Xilinx-Zynqmp