cbcvebase.
CVE-2026-46101
published 2026-05-27

CVE-2026-46101: In the Linux kernel, the following vulnerability has been resolved: netfilter: reject zero shift in nft_bitwise Reject zero shift operands for nft_bitwise left…

medium5.5
In the Linux kernel, the following vulnerability has been resolved: netfilter: reject zero shift in nft_bitwise Reject zero shift operands for nft_bitwise left and right shift expressions during initialization. The carry propagation logic computes the carry from the adjacent 32-bit word using BITS_PER_TYPE(u32) - shift. A zero shift operand turns this into a 32-bit shift, which is undefined behaviour. Reject zero shift operands in the control plane, alongside the existing check for values greater than or equal to 32, so malformed rules never reach the packet path.

Affected

10 ranges
VendorProductVersion rangeFixed in
linuxlinux——
linuxlinux>= 567d746b55bc66d3800c9ae91d50f0c5deb2fd93 < 9baa08d6b6b096fad70049533f0d705d85fdc9799baa08d6b6b096fad70049533f0d705d85fdc979
linuxlinux>= 567d746b55bc66d3800c9ae91d50f0c5deb2fd93 < 4fccea585631621c975883911a08d15b6671f7dc4fccea585631621c975883911a08d15b6671f7dc
linuxlinux>= 567d746b55bc66d3800c9ae91d50f0c5deb2fd93 < 9ad26c272405f53834871cc2e46b9b5393a666c39ad26c272405f53834871cc2e46b9b5393a666c3
linuxlinux>= 567d746b55bc66d3800c9ae91d50f0c5deb2fd93 < bffef0acec9c3b837a785248a893137fb7f26c95bffef0acec9c3b837a785248a893137fb7f26c95
linuxlinux>= 567d746b55bc66d3800c9ae91d50f0c5deb2fd93 < ca24f1243ad1a4d12d6a23876bbbe3ed02099853ca24f1243ad1a4d12d6a23876bbbe3ed02099853
linuxlinux>= 567d746b55bc66d3800c9ae91d50f0c5deb2fd93 < 6f820139d16a4c9865a145d4a9cf9c92cc632c146f820139d16a4c9865a145d4a9cf9c92cc632c14
linuxlinux>= 567d746b55bc66d3800c9ae91d50f0c5deb2fd93 < f370205974f171a5868c13ff30d7642fed46e47bf370205974f171a5868c13ff30d7642fed46e47b
linuxlinux>= 567d746b55bc66d3800c9ae91d50f0c5deb2fd93 < fe11e5c40817b84abaa5d83bfb6586d8412bfd07fe11e5c40817b84abaa5d83bfb6586d8412bfd07
linuxlinux_kernel——