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.
Product status
567d746b55bc66d3800c9ae91d50f0c5deb2fd93 (git) before 9baa08d6b6b096fad70049533f0d705d85fdc979
567d746b55bc66d3800c9ae91d50f0c5deb2fd93 (git) before 4fccea585631621c975883911a08d15b6671f7dc
567d746b55bc66d3800c9ae91d50f0c5deb2fd93 (git) before 9ad26c272405f53834871cc2e46b9b5393a666c3
567d746b55bc66d3800c9ae91d50f0c5deb2fd93 (git) before bffef0acec9c3b837a785248a893137fb7f26c95
567d746b55bc66d3800c9ae91d50f0c5deb2fd93 (git) before ca24f1243ad1a4d12d6a23876bbbe3ed02099853
567d746b55bc66d3800c9ae91d50f0c5deb2fd93 (git) before 6f820139d16a4c9865a145d4a9cf9c92cc632c14
567d746b55bc66d3800c9ae91d50f0c5deb2fd93 (git) before f370205974f171a5868c13ff30d7642fed46e47b
567d746b55bc66d3800c9ae91d50f0c5deb2fd93 (git) before fe11e5c40817b84abaa5d83bfb6586d8412bfd07
5.6
Any version before 5.6
5.10.258 (semver)
5.15.209 (semver)
6.1.175 (semver)
6.6.140 (semver)
6.12.86 (semver)
6.18.27 (semver)
7.0.4 (semver)
7.1-rc2 (original_commit_for_fix)
References
git.kernel.org/...c/9baa08d6b6b096fad70049533f0d705d85fdc979
git.kernel.org/...c/4fccea585631621c975883911a08d15b6671f7dc
git.kernel.org/...c/9ad26c272405f53834871cc2e46b9b5393a666c3
git.kernel.org/...c/bffef0acec9c3b837a785248a893137fb7f26c95
git.kernel.org/...c/ca24f1243ad1a4d12d6a23876bbbe3ed02099853
git.kernel.org/...c/6f820139d16a4c9865a145d4a9cf9c92cc632c14
git.kernel.org/...c/f370205974f171a5868c13ff30d7642fed46e47b
git.kernel.org/...c/fe11e5c40817b84abaa5d83bfb6586d8412bfd07