CVE-2026-46101
MEDIUM
MEDIUM
Priority: 0.01
BB Relevance:
36/100
Published: 2026-05-27
Modified: 2026-11-10
First seen: 2026-11-06
Status: active
Attack Surface
Low Complexity
No Interaction
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
None
I:
None
A:
High
Description
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 Software (20)
| Vendor | Product | Version |
|---|---|---|
| Linux | Linux | 567d746b55bc66d3800c9ae91d50f0c5deb2fd93 < 9baa08d6b6b096fad70049533f0d705d85fdc979 |
| Linux | Linux | 567d746b55bc66d3800c9ae91d50f0c5deb2fd93 < 4fccea585631621c975883911a08d15b6671f7dc |
| Linux | Linux | 567d746b55bc66d3800c9ae91d50f0c5deb2fd93 < 9ad26c272405f53834871cc2e46b9b5393a666c3 |
| Linux | Linux | 567d746b55bc66d3800c9ae91d50f0c5deb2fd93 < bffef0acec9c3b837a785248a893137fb7f26c95 |
| Linux | Linux | 567d746b55bc66d3800c9ae91d50f0c5deb2fd93 < ca24f1243ad1a4d12d6a23876bbbe3ed02099853 |
| Linux | Linux | 567d746b55bc66d3800c9ae91d50f0c5deb2fd93 < 6f820139d16a4c9865a145d4a9cf9c92cc632c14 |
| Linux | Linux | 567d746b55bc66d3800c9ae91d50f0c5deb2fd93 < f370205974f171a5868c13ff30d7642fed46e47b |
| Linux | Linux | 567d746b55bc66d3800c9ae91d50f0c5deb2fd93 < fe11e5c40817b84abaa5d83bfb6586d8412bfd07 |
| Linux | Linux | 5.6 |
| Linux | Linux | 567d746b55bc66d3800c9ae91d50f0c5deb2fd93 < 9baa08d6b6b096fad70049533f0d705d85fdc979 |
| Linux | Linux | 567d746b55bc66d3800c9ae91d50f0c5deb2fd93 < 4fccea585631621c975883911a08d15b6671f7dc |
| Linux | Linux | 567d746b55bc66d3800c9ae91d50f0c5deb2fd93 < 9ad26c272405f53834871cc2e46b9b5393a666c3 |
| Linux | Linux | 567d746b55bc66d3800c9ae91d50f0c5deb2fd93 < bffef0acec9c3b837a785248a893137fb7f26c95 |
| Linux | Linux | 567d746b55bc66d3800c9ae91d50f0c5deb2fd93 < ca24f1243ad1a4d12d6a23876bbbe3ed02099853 |
| Linux | Linux | 567d746b55bc66d3800c9ae91d50f0c5deb2fd93 < 6f820139d16a4c9865a145d4a9cf9c92cc632c14 |
| Linux | Linux | 567d746b55bc66d3800c9ae91d50f0c5deb2fd93 < f370205974f171a5868c13ff30d7642fed46e47b |
| Linux | Linux | 567d746b55bc66d3800c9ae91d50f0c5deb2fd93 < fe11e5c40817b84abaa5d83bfb6586d8412bfd07 |
| Linux | Linux | 5.6 |
| linux | linux_kernel | 5.6 – 5.10.258 |
| linux | linux_kernel | 7.1 |