{"id":"CVE-2026-43241","state":"PUBLISHED","title":"ntb: ntb_hw_switchtec: Fix array-index-out-of-bounds access","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nntb: ntb_hw_switchtec: Fix array-index-out-of-bounds access\n\nNumber of MW LUTs depends on NTB configuration and can be set to MAX_MWS,\nThis patch protects against invalid index out of bounds access to mw_sizes\nWhen invalid access print message to user that configuration is not valid.","publishedAt":"2026-05-06T11:28:34.927Z","updatedAt":"2026-05-11T22:20:44.266Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"ec0467ccbdeb69a86c8729073057bda7bce00eec","status":"affected","lessThan":"348e1ac9ad983ed7e62de14e1daf47f1695a4ce9","versionType":"git"},{"version":"ec0467ccbdeb69a86c8729073057bda7bce00eec","status":"affected","lessThan":"ee02c4f980c91820845dd8e469ec7dc670ab6d9d","versionType":"git"},{"version":"ec0467ccbdeb69a86c8729073057bda7bce00eec","status":"affected","lessThan":"740945de896021b9a859e71f38f6aea72a6393cf","versionType":"git"},{"version":"ec0467ccbdeb69a86c8729073057bda7bce00eec","status":"affected","lessThan":"85c9daa1f8319bbb3dfee71dc6a2f969cd3b4c92","versionType":"git"},{"version":"ec0467ccbdeb69a86c8729073057bda7bce00eec","status":"affected","lessThan":"0e930420945106151c6eb3d7837b4e6154e9b144","versionType":"git"},{"version":"ec0467ccbdeb69a86c8729073057bda7bce00eec","status":"affected","lessThan":"2346856b74823a2a78109002e479a3d02526a9ce","versionType":"git"},{"version":"ec0467ccbdeb69a86c8729073057bda7bce00eec","status":"affected","lessThan":"47ce292dd45dc689747c40603222691638919189","versionType":"git"},{"version":"ec0467ccbdeb69a86c8729073057bda7bce00eec","status":"affected","lessThan":"c8ba7ad2cc1c7b90570aa347b8ebbe279f1eface","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/ntb/hw/mscc/ntb_hw_switchtec.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.15","versionType":"semver"},{"version":"5.10.252","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.202","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.165","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.128","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.75","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.16","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.6","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/ntb/hw/mscc/ntb_hw_switchtec.c"]}],"references":["https://git.kernel.org/stable/c/348e1ac9ad983ed7e62de14e1daf47f1695a4ce9","https://git.kernel.org/stable/c/ee02c4f980c91820845dd8e469ec7dc670ab6d9d","https://git.kernel.org/stable/c/740945de896021b9a859e71f38f6aea72a6393cf","https://git.kernel.org/stable/c/85c9daa1f8319bbb3dfee71dc6a2f969cd3b4c92","https://git.kernel.org/stable/c/0e930420945106151c6eb3d7837b4e6154e9b144","https://git.kernel.org/stable/c/2346856b74823a2a78109002e479a3d02526a9ce","https://git.kernel.org/stable/c/47ce292dd45dc689747c40603222691638919189","https://git.kernel.org/stable/c/c8ba7ad2cc1c7b90570aa347b8ebbe279f1eface"],"weaknesses":[],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/43xxx/CVE-2026-43241.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-43241","state":"PUBLISHED","datePublished":"2026-05-06T11:28:34.927Z","dateUpdated":"2026-05-11T22:20:44.266Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-01T14:12:55.995Z"},"containers":{"cna":{"title":"ntb: ntb_hw_switchtec: Fix array-index-out-of-bounds access","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nntb: ntb_hw_switchtec: Fix array-index-out-of-bounds access\n\nNumber of MW LUTs depends on NTB configuration and can be set to MAX_MWS,\nThis patch protects against invalid index out of bounds access to mw_sizes\nWhen invalid access print message to user that configuration is not valid."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"ec0467ccbdeb69a86c8729073057bda7bce00eec","status":"affected","lessThan":"348e1ac9ad983ed7e62de14e1daf47f1695a4ce9","versionType":"git"},{"version":"ec0467ccbdeb69a86c8729073057bda7bce00eec","status":"affected","lessThan":"ee02c4f980c91820845dd8e469ec7dc670ab6d9d","versionType":"git"},{"version":"ec0467ccbdeb69a86c8729073057bda7bce00eec","status":"affected","lessThan":"740945de896021b9a859e71f38f6aea72a6393cf","versionType":"git"},{"version":"ec0467ccbdeb69a86c8729073057bda7bce00eec","status":"affected","lessThan":"85c9daa1f8319bbb3dfee71dc6a2f969cd3b4c92","versionType":"git"},{"version":"ec0467ccbdeb69a86c8729073057bda7bce00eec","status":"affected","lessThan":"0e930420945106151c6eb3d7837b4e6154e9b144","versionType":"git"},{"version":"ec0467ccbdeb69a86c8729073057bda7bce00eec","status":"affected","lessThan":"2346856b74823a2a78109002e479a3d02526a9ce","versionType":"git"},{"version":"ec0467ccbdeb69a86c8729073057bda7bce00eec","status":"affected","lessThan":"47ce292dd45dc689747c40603222691638919189","versionType":"git"},{"version":"ec0467ccbdeb69a86c8729073057bda7bce00eec","status":"affected","lessThan":"c8ba7ad2cc1c7b90570aa347b8ebbe279f1eface","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/ntb/hw/mscc/ntb_hw_switchtec.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.15","versionType":"semver"},{"version":"5.10.252","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.202","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.165","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.128","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.75","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.16","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.6","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/ntb/hw/mscc/ntb_hw_switchtec.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/348e1ac9ad983ed7e62de14e1daf47f1695a4ce9"},{"url":"https://git.kernel.org/stable/c/ee02c4f980c91820845dd8e469ec7dc670ab6d9d"},{"url":"https://git.kernel.org/stable/c/740945de896021b9a859e71f38f6aea72a6393cf"},{"url":"https://git.kernel.org/stable/c/85c9daa1f8319bbb3dfee71dc6a2f969cd3b4c92"},{"url":"https://git.kernel.org/stable/c/0e930420945106151c6eb3d7837b4e6154e9b144"},{"url":"https://git.kernel.org/stable/c/2346856b74823a2a78109002e479a3d02526a9ce"},{"url":"https://git.kernel.org/stable/c/47ce292dd45dc689747c40603222691638919189"},{"url":"https://git.kernel.org/stable/c/c8ba7ad2cc1c7b90570aa347b8ebbe279f1eface"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T22:20:44.266Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"5.10.252"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"5.15.202"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"6.1.165"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"6.6.128"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"6.12.75"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"6.18.16"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"6.19.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"7.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}