{"api_version":"1","generated_at":"2026-05-28T04:24:02+00:00","cve":"CVE-2026-46101","urls":{"html":"https://cve.report/CVE-2026-46101","api":"https://cve.report/api/cve/CVE-2026-46101.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-46101","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-46101"},"summary":{"title":"netfilter: reject zero shift in nft_bitwise","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-27 14:17:32","updated_at":"2026-05-27 14:48:03"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/bffef0acec9c3b837a785248a893137fb7f26c95","name":"https://git.kernel.org/stable/c/bffef0acec9c3b837a785248a893137fb7f26c95","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/fe11e5c40817b84abaa5d83bfb6586d8412bfd07","name":"https://git.kernel.org/stable/c/fe11e5c40817b84abaa5d83bfb6586d8412bfd07","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6f820139d16a4c9865a145d4a9cf9c92cc632c14","name":"https://git.kernel.org/stable/c/6f820139d16a4c9865a145d4a9cf9c92cc632c14","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f370205974f171a5868c13ff30d7642fed46e47b","name":"https://git.kernel.org/stable/c/f370205974f171a5868c13ff30d7642fed46e47b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ca24f1243ad1a4d12d6a23876bbbe3ed02099853","name":"https://git.kernel.org/stable/c/ca24f1243ad1a4d12d6a23876bbbe3ed02099853","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-46101","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46101","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 567d746b55bc66d3800c9ae91d50f0c5deb2fd93 bffef0acec9c3b837a785248a893137fb7f26c95 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 567d746b55bc66d3800c9ae91d50f0c5deb2fd93 ca24f1243ad1a4d12d6a23876bbbe3ed02099853 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 567d746b55bc66d3800c9ae91d50f0c5deb2fd93 6f820139d16a4c9865a145d4a9cf9c92cc632c14 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 567d746b55bc66d3800c9ae91d50f0c5deb2fd93 f370205974f171a5868c13ff30d7642fed46e47b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 567d746b55bc66d3800c9ae91d50f0c5deb2fd93 fe11e5c40817b84abaa5d83bfb6586d8412bfd07 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.6","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.6 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.140 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.86 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.27 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.4 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1-rc2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/netfilter/nft_bitwise.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"bffef0acec9c3b837a785248a893137fb7f26c95","status":"affected","version":"567d746b55bc66d3800c9ae91d50f0c5deb2fd93","versionType":"git"},{"lessThan":"ca24f1243ad1a4d12d6a23876bbbe3ed02099853","status":"affected","version":"567d746b55bc66d3800c9ae91d50f0c5deb2fd93","versionType":"git"},{"lessThan":"6f820139d16a4c9865a145d4a9cf9c92cc632c14","status":"affected","version":"567d746b55bc66d3800c9ae91d50f0c5deb2fd93","versionType":"git"},{"lessThan":"f370205974f171a5868c13ff30d7642fed46e47b","status":"affected","version":"567d746b55bc66d3800c9ae91d50f0c5deb2fd93","versionType":"git"},{"lessThan":"fe11e5c40817b84abaa5d83bfb6586d8412bfd07","status":"affected","version":"567d746b55bc66d3800c9ae91d50f0c5deb2fd93","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/netfilter/nft_bitwise.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.6"},{"lessThan":"5.6","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.140","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.86","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.27","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1-rc2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.140","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.86","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.27","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.4","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1-rc2","versionStartIncluding":"5.6","vulnerable":true}],"negate":false,"operator":"OR"}]}],"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."}],"providerMetadata":{"dateUpdated":"2026-05-27T12:59:08.220Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"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: reject zero shift in nft_bitwise","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-46101","datePublished":"2026-05-27T12:59:08.220Z","dateReserved":"2026-05-13T15:03:33.097Z","dateUpdated":"2026-05-27T12:59:08.220Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-27 14:17:32","lastModifiedDate":"2026-05-27 14:48:03","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"46101","Ordinal":"1","Title":"netfilter: reject zero shift in nft_bitwise","CVE":"CVE-2026-46101","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"46101","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"netfilter: reject zero shift in nft_bitwise"}]}}}