{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-46101","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-05-13T15:03:33.097Z","datePublished":"2026-05-27T12:59:08.220Z","dateUpdated":"2026-10-15T01:20:30.172Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-06-14T17:54:30.068Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: reject zero shift in nft_bitwise\n\nReject zero shift operands for nft_bitwise left and right shift\nexpressions during initialization.\n\nThe carry propagation logic computes the carry from the adjacent 32-bit\nword using BITS_PER_TYPE(u32) - shift. A zero shift operand turns this\ninto a 32-bit shift, which is undefined behaviour.\n\nReject zero shift operands in the control plane, alongside the existing\ncheck for values greater than or equal to 32, so malformed rules never\nreach the packet path."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/netfilter/nft_bitwise.c"],"versions":[{"version":"567d746b55bc66d3800c9ae91d50f0c5deb2fd93","lessThan":"9baa08d6b6b096fad70049533f0d705d85fdc979","status":"affected","versionType":"git"},{"version":"567d746b55bc66d3800c9ae91d50f0c5deb2fd93","lessThan":"4fccea585631621c975883911a08d15b6671f7dc","status":"affected","versionType":"git"},{"version":"567d746b55bc66d3800c9ae91d50f0c5deb2fd93","lessThan":"9ad26c272405f53834871cc2e46b9b5393a666c3","status":"affected","versionType":"git"},{"version":"567d746b55bc66d3800c9ae91d50f0c5deb2fd93","lessThan":"bffef0acec9c3b837a785248a893137fb7f26c95","status":"affected","versionType":"git"},{"version":"567d746b55bc66d3800c9ae91d50f0c5deb2fd93","lessThan":"ca24f1243ad1a4d12d6a23876bbbe3ed02099853","status":"affected","versionType":"git"},{"version":"567d746b55bc66d3800c9ae91d50f0c5deb2fd93","lessThan":"6f820139d16a4c9865a145d4a9cf9c92cc632c14","status":"affected","versionType":"git"},{"version":"567d746b55bc66d3800c9ae91d50f0c5deb2fd93","lessThan":"f370205974f171a5868c13ff30d7642fed46e47b","status":"affected","versionType":"git"},{"version":"567d746b55bc66d3800c9ae91d50f0c5deb2fd93","lessThan":"fe11e5c40817b84abaa5d83bfb6586d8412bfd07","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/netfilter/nft_bitwise.c"],"versions":[{"version":"5.6","status":"affected"},{"version":"0","lessThan":"5.6","status":"unaffected","versionType":"semver"},{"version":"5.10.258","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.209","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.175","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.140","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.86","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.27","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.0.4","lessThanOrEqual":"7.0.*","status":"unaffected","versionType":"semver"},{"version":"7.1","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"5.10.258"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"5.15.209"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"6.1.175"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"6.6.140"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"6.12.86"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"6.18.27"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"7.0.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"7.1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/9baa08d6b6b096fad70049533f0d705d85fdc979"},{"url":"https://git.kernel.org/stable/c/4fccea585631621c975883911a08d15b6671f7dc"},{"url":"https://git.kernel.org/stable/c/9ad26c272405f53834871cc2e46b9b5393a666c3"},{"url":"https://git.kernel.org/stable/c/bffef0acec9c3b837a785248a893137fb7f26c95"},{"url":"https://git.kernel.org/stable/c/ca24f1243ad1a4d12d6a23876bbbe3ed02099853"},{"url":"https://git.kernel.org/stable/c/6f820139d16a4c9865a145d4a9cf9c92cc632c14"},{"url":"https://git.kernel.org/stable/c/f370205974f171a5868c13ff30d7642fed46e47b"},{"url":"https://git.kernel.org/stable/c/fe11e5c40817b84abaa5d83bfb6586d8412bfd07"}],"title":"netfilter: 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