{"api_version":"1","generated_at":"2026-08-15T08:45:47+00:00","cve":"CVE-2026-74390","urls":{"html":"https://cve.report/CVE-2026-74390","api":"https://cve.report/api/cve/CVE-2026-74390.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-74390","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-74390"},"summary":{"title":"RDMA/irdma: Fix out-of-bounds write in irdma_copy_user_pgaddrs","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/irdma: Fix out-of-bounds write in irdma_copy_user_pgaddrs\n\nThe irdma_copy_user_pgaddrs function loops through all of the umem DMA\nblocks to populate the PBLEs and will stop when either the last DMA\nblock is reached or palloc->total_cnt is reached. The issue is that\nthe logic for checking palloc->total_cnt would only work for non-zero\nvalues.\n\nWhen irdma_setup_pbles is called with lvl==0, it\ncalls irdma_copy_user_pgaddrs with palloc->total_cnt==0, which means\nthe only way to break out of the loop is to reach the last umem DMA\nblock, which means it could end up going beyond the fixed size of 4\niwmr->pgaddrmem array that is used in the lvl==0 case.\n\nIn the case of QP/CQ/SRQ rings, the value of lvl is determined by a\nseparate input (for example, req.cq_pages in the case of a CQ). So,\nwe must perform explicit checking to ensure we don't overflow the\npgaddrmem array if the user provides a umem that consists of more\nblocks than their provided req.cq_pages.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-15 06:22:40","updated_at":"2026-08-15 06:22:40"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/abd27a977b419d584efa659488c22d2306987b29","name":"https://git.kernel.org/stable/c/abd27a977b419d584efa659488c22d2306987b29","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/5ebb3ed757be3e04cf803026004aa0beaeb13e9b","name":"https://git.kernel.org/stable/c/5ebb3ed757be3e04cf803026004aa0beaeb13e9b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/9f8f0d2099e3de1194e37dc933ae0c4206b09aaf","name":"https://git.kernel.org/stable/c/9f8f0d2099e3de1194e37dc933ae0c4206b09aaf","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4780f58672ee6328accd54a95f9c00683477e499","name":"https://git.kernel.org/stable/c/4780f58672ee6328accd54a95f9c00683477e499","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/79a20a8e201a779224b4bf115250a7713bde72c0","name":"https://git.kernel.org/stable/c/79a20a8e201a779224b4bf115250a7713bde72c0","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/424d51d33c7541a86934067c2c0538124687fc90","name":"https://git.kernel.org/stable/c/424d51d33c7541a86934067c2c0538124687fc90","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/192a3be0e3759daa24af2841208b074ca6dbaabc","name":"https://git.kernel.org/stable/c/192a3be0e3759daa24af2841208b074ca6dbaabc","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-74390","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74390","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b48c24c2d710cf34810c555dcef883a3d35a9c08 4780f58672ee6328accd54a95f9c00683477e499 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b48c24c2d710cf34810c555dcef883a3d35a9c08 79a20a8e201a779224b4bf115250a7713bde72c0 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b48c24c2d710cf34810c555dcef883a3d35a9c08 9f8f0d2099e3de1194e37dc933ae0c4206b09aaf git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b48c24c2d710cf34810c555dcef883a3d35a9c08 192a3be0e3759daa24af2841208b074ca6dbaabc git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b48c24c2d710cf34810c555dcef883a3d35a9c08 424d51d33c7541a86934067c2c0538124687fc90 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b48c24c2d710cf34810c555dcef883a3d35a9c08 abd27a977b419d584efa659488c22d2306987b29 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b48c24c2d710cf34810c555dcef883a3d35a9c08 5ebb3ed757be3e04cf803026004aa0beaeb13e9b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.14","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.14 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.212 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.178 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.145 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.97 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.40 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.5 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc1 * 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/infiniband/hw/irdma/verbs.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"4780f58672ee6328accd54a95f9c00683477e499","status":"affected","version":"b48c24c2d710cf34810c555dcef883a3d35a9c08","versionType":"git"},{"lessThan":"79a20a8e201a779224b4bf115250a7713bde72c0","status":"affected","version":"b48c24c2d710cf34810c555dcef883a3d35a9c08","versionType":"git"},{"lessThan":"9f8f0d2099e3de1194e37dc933ae0c4206b09aaf","status":"affected","version":"b48c24c2d710cf34810c555dcef883a3d35a9c08","versionType":"git"},{"lessThan":"192a3be0e3759daa24af2841208b074ca6dbaabc","status":"affected","version":"b48c24c2d710cf34810c555dcef883a3d35a9c08","versionType":"git"},{"lessThan":"424d51d33c7541a86934067c2c0538124687fc90","status":"affected","version":"b48c24c2d710cf34810c555dcef883a3d35a9c08","versionType":"git"},{"lessThan":"abd27a977b419d584efa659488c22d2306987b29","status":"affected","version":"b48c24c2d710cf34810c555dcef883a3d35a9c08","versionType":"git"},{"lessThan":"5ebb3ed757be3e04cf803026004aa0beaeb13e9b","status":"affected","version":"b48c24c2d710cf34810c555dcef883a3d35a9c08","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/infiniband/hw/irdma/verbs.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.14"},{"lessThan":"5.14","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.212","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.178","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.145","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.97","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.40","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.5","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.212","versionStartIncluding":"5.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.178","versionStartIncluding":"5.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.145","versionStartIncluding":"5.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.97","versionStartIncluding":"5.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.40","versionStartIncluding":"5.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.5","versionStartIncluding":"5.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc1","versionStartIncluding":"5.14","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/irdma: Fix out-of-bounds write in irdma_copy_user_pgaddrs\n\nThe irdma_copy_user_pgaddrs function loops through all of the umem DMA\nblocks to populate the PBLEs and will stop when either the last DMA\nblock is reached or palloc->total_cnt is reached. The issue is that\nthe logic for checking palloc->total_cnt would only work for non-zero\nvalues.\n\nWhen irdma_setup_pbles is called with lvl==0, it\ncalls irdma_copy_user_pgaddrs with palloc->total_cnt==0, which means\nthe only way to break out of the loop is to reach the last umem DMA\nblock, which means it could end up going beyond the fixed size of 4\niwmr->pgaddrmem array that is used in the lvl==0 case.\n\nIn the case of QP/CQ/SRQ rings, the value of lvl is determined by a\nseparate input (for example, req.cq_pages in the case of a CQ). So,\nwe must perform explicit checking to ensure we don't overflow the\npgaddrmem array if the user provides a umem that consists of more\nblocks than their provided req.cq_pages."}],"providerMetadata":{"dateUpdated":"2026-08-15T05:59:04.479Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/4780f58672ee6328accd54a95f9c00683477e499"},{"url":"https://git.kernel.org/stable/c/79a20a8e201a779224b4bf115250a7713bde72c0"},{"url":"https://git.kernel.org/stable/c/9f8f0d2099e3de1194e37dc933ae0c4206b09aaf"},{"url":"https://git.kernel.org/stable/c/192a3be0e3759daa24af2841208b074ca6dbaabc"},{"url":"https://git.kernel.org/stable/c/424d51d33c7541a86934067c2c0538124687fc90"},{"url":"https://git.kernel.org/stable/c/abd27a977b419d584efa659488c22d2306987b29"},{"url":"https://git.kernel.org/stable/c/5ebb3ed757be3e04cf803026004aa0beaeb13e9b"}],"title":"RDMA/irdma: Fix out-of-bounds write in irdma_copy_user_pgaddrs","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-74390","datePublished":"2026-08-15T05:59:04.479Z","dateReserved":"2026-08-15T05:44:03.891Z","dateUpdated":"2026-08-15T05:59:04.479Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-15 06:22:40","lastModifiedDate":"2026-08-15 06:22:40","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"74390","Ordinal":"1","Title":"RDMA/irdma: Fix out-of-bounds write in irdma_copy_user_pgaddrs","CVE":"CVE-2026-74390","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"74390","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/irdma: Fix out-of-bounds write in irdma_copy_user_pgaddrs\n\nThe irdma_copy_user_pgaddrs function loops through all of the umem DMA\nblocks to populate the PBLEs and will stop when either the last DMA\nblock is reached or palloc->total_cnt is reached. The issue is that\nthe logic for checking palloc->total_cnt would only work for non-zero\nvalues.\n\nWhen irdma_setup_pbles is called with lvl==0, it\ncalls irdma_copy_user_pgaddrs with palloc->total_cnt==0, which means\nthe only way to break out of the loop is to reach the last umem DMA\nblock, which means it could end up going beyond the fixed size of 4\niwmr->pgaddrmem array that is used in the lvl==0 case.\n\nIn the case of QP/CQ/SRQ rings, the value of lvl is determined by a\nseparate input (for example, req.cq_pages in the case of a CQ). So,\nwe must perform explicit checking to ensure we don't overflow the\npgaddrmem array if the user provides a umem that consists of more\nblocks than their provided req.cq_pages.","Type":"Description","Title":"RDMA/irdma: Fix out-of-bounds write in irdma_copy_user_pgaddrs"}]}}}