{"api_version":"1","generated_at":"2026-05-13T11:01:15+00:00","cve":"CVE-2026-43141","urls":{"html":"https://cve.report/CVE-2026-43141","api":"https://cve.report/api/cve/CVE-2026-43141.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-43141","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-43141"},"summary":{"title":"ntb: ntb_hw_switchtec: Fix shift-out-of-bounds for 0 mw lut","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nntb: ntb_hw_switchtec: Fix shift-out-of-bounds for 0 mw lut\n\nNumber of MW LUTs depends on NTB configuration and can be set to zero,\nin such scenario rounddown_pow_of_two will cause undefined behaviour and\nshould not be performed.\nThis patch ensures that rounddown_pow_of_two is called on valid value.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-06 12:16:31","updated_at":"2026-05-06 13:07:51"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/d0559d07afabfddaaded6a61a16154486b956764","name":"https://git.kernel.org/stable/c/d0559d07afabfddaaded6a61a16154486b956764","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1a867d0d79a4a570a33f2f433919ad2bd7a27b67","name":"https://git.kernel.org/stable/c/1a867d0d79a4a570a33f2f433919ad2bd7a27b67","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/186615f8855a0be4ee7d3fcd09a8ecc10e783b08","name":"https://git.kernel.org/stable/c/186615f8855a0be4ee7d3fcd09a8ecc10e783b08","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a11d03d116eef138a7249202bd772c8e61915aec","name":"https://git.kernel.org/stable/c/a11d03d116eef138a7249202bd772c8e61915aec","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a133e3caf844a3f56b6eef89ddaa66115874f6bd","name":"https://git.kernel.org/stable/c/a133e3caf844a3f56b6eef89ddaa66115874f6bd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d652ef399f131fcd5f8f34266167449ee7c9e5b3","name":"https://git.kernel.org/stable/c/d652ef399f131fcd5f8f34266167449ee7c9e5b3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/5590cd04d6845c01a6bad985a491c58af6fb5389","name":"https://git.kernel.org/stable/c/5590cd04d6845c01a6bad985a491c58af6fb5389","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2e4d5e8d86a969318340be95470bb76e52392082","name":"https://git.kernel.org/stable/c/2e4d5e8d86a969318340be95470bb76e52392082","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-43141","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43141","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 d652ef399f131fcd5f8f34266167449ee7c9e5b3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 5590cd04d6845c01a6bad985a491c58af6fb5389 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 a11d03d116eef138a7249202bd772c8e61915aec git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 d0559d07afabfddaaded6a61a16154486b956764 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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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":["drivers/ntb/hw/mscc/ntb_hw_switchtec.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"d652ef399f131fcd5f8f34266167449ee7c9e5b3","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"5590cd04d6845c01a6bad985a491c58af6fb5389","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"a11d03d116eef138a7249202bd772c8e61915aec","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"d0559d07afabfddaaded6a61a16154486b956764","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"2e4d5e8d86a969318340be95470bb76e52392082","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"a133e3caf844a3f56b6eef89ddaa66115874f6bd","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"1a867d0d79a4a570a33f2f433919ad2bd7a27b67","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"186615f8855a0be4ee7d3fcd09a8ecc10e783b08","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/ntb/hw/mscc/ntb_hw_switchtec.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.252","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.202","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.165","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.128","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.75","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.16","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.252","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.202","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.165","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.128","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.75","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nntb: ntb_hw_switchtec: Fix shift-out-of-bounds for 0 mw lut\n\nNumber of MW LUTs depends on NTB configuration and can be set to zero,\nin such scenario rounddown_pow_of_two will cause undefined behaviour and\nshould not be performed.\nThis patch ensures that rounddown_pow_of_two is called on valid value."}],"providerMetadata":{"dateUpdated":"2026-05-06T11:27:26.193Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/d652ef399f131fcd5f8f34266167449ee7c9e5b3"},{"url":"https://git.kernel.org/stable/c/5590cd04d6845c01a6bad985a491c58af6fb5389"},{"url":"https://git.kernel.org/stable/c/a11d03d116eef138a7249202bd772c8e61915aec"},{"url":"https://git.kernel.org/stable/c/d0559d07afabfddaaded6a61a16154486b956764"},{"url":"https://git.kernel.org/stable/c/2e4d5e8d86a969318340be95470bb76e52392082"},{"url":"https://git.kernel.org/stable/c/a133e3caf844a3f56b6eef89ddaa66115874f6bd"},{"url":"https://git.kernel.org/stable/c/1a867d0d79a4a570a33f2f433919ad2bd7a27b67"},{"url":"https://git.kernel.org/stable/c/186615f8855a0be4ee7d3fcd09a8ecc10e783b08"}],"title":"ntb: ntb_hw_switchtec: Fix shift-out-of-bounds for 0 mw lut","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-43141","datePublished":"2026-05-06T11:27:26.193Z","dateReserved":"2026-05-01T14:12:55.989Z","dateUpdated":"2026-05-06T11:27:26.193Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-06 12:16:31","lastModifiedDate":"2026-05-06 13:07:51","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"43141","Ordinal":"1","Title":"ntb: ntb_hw_switchtec: Fix shift-out-of-bounds for 0 mw lut","CVE":"CVE-2026-43141","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"43141","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nntb: ntb_hw_switchtec: Fix shift-out-of-bounds for 0 mw lut\n\nNumber of MW LUTs depends on NTB configuration and can be set to zero,\nin such scenario rounddown_pow_of_two will cause undefined behaviour and\nshould not be performed.\nThis patch ensures that rounddown_pow_of_two is called on valid value.","Type":"Description","Title":"ntb: ntb_hw_switchtec: Fix shift-out-of-bounds for 0 mw lut"}]}}}