{"api_version":"1","generated_at":"2026-08-15T08:44:31+00:00","cve":"CVE-2026-74346","urls":{"html":"https://cve.report/CVE-2026-74346","api":"https://cve.report/api/cve/CVE-2026-74346.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-74346","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-74346"},"summary":{"title":"RDMA/irdma: Fix OOB read during CQ MR registration","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/irdma: Fix OOB read during CQ MR registration\n\nSashiko pointed out an unrelated bug during a previous patch:\nhttps://sashiko.dev/#/patchset/20260512183852.614045-1-jmoroni%40google.com\n\nThis change fixes the bug by eliminating the cqmr->split field which\nwas not being set properly and instead just checks the CQ resize\nfeature flag directly.\n\nThe cqmr->split field essentially tracks whether IRDMA_FEATURE_CQ_RESIZE\nis set, but it was not being set until CQ creation time, which is _after_\nCQ memory registration (the only other place where it is referenced).\n\nAs a result, it would always be false during MR registration and would\ntherefore cause irdma_handle_q_mem to populate cqmr->shadow even for GEN_2\nHW and beyond:\n\n    cqmr->shadow = (dma_addr_t)arr[req->cq_pages];\n\nThe issue is that for GEN_2 and beyond, req->cq_pages may be exactly equal\nto iwmr->page_cnt and therefore equal to the size of arr, which would cause\nan OOB read by one.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-15 06:22:35","updated_at":"2026-08-15 06:22:35"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/a80b3b13786e9ab1c52b31a1f16c7d6708fa9220","name":"https://git.kernel.org/stable/c/a80b3b13786e9ab1c52b31a1f16c7d6708fa9220","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d5aa82da8f65562da996d184686db9d0ea718b91","name":"https://git.kernel.org/stable/c/d5aa82da8f65562da996d184686db9d0ea718b91","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d566002de555b18cc395012c5c1cb8682fc6d2a9","name":"https://git.kernel.org/stable/c/d566002de555b18cc395012c5c1cb8682fc6d2a9","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3159c6fac43dc24b34d31971884d98a7a1bf4c4b","name":"https://git.kernel.org/stable/c/3159c6fac43dc24b34d31971884d98a7a1bf4c4b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/54cab78df0375196aaec4e3109191653d21751df","name":"https://git.kernel.org/stable/c/54cab78df0375196aaec4e3109191653d21751df","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4385ddd654d90245eeb83b3cb539670ab5c85ba4","name":"https://git.kernel.org/stable/c/4385ddd654d90245eeb83b3cb539670ab5c85ba4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ad360a31092a870633ec255b96f50181628b4de0","name":"https://git.kernel.org/stable/c/ad360a31092a870633ec255b96f50181628b4de0","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-74346","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74346","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b48c24c2d710cf34810c555dcef883a3d35a9c08 a80b3b13786e9ab1c52b31a1f16c7d6708fa9220 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b48c24c2d710cf34810c555dcef883a3d35a9c08 3159c6fac43dc24b34d31971884d98a7a1bf4c4b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b48c24c2d710cf34810c555dcef883a3d35a9c08 ad360a31092a870633ec255b96f50181628b4de0 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b48c24c2d710cf34810c555dcef883a3d35a9c08 d566002de555b18cc395012c5c1cb8682fc6d2a9 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b48c24c2d710cf34810c555dcef883a3d35a9c08 54cab78df0375196aaec4e3109191653d21751df git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b48c24c2d710cf34810c555dcef883a3d35a9c08 d5aa82da8f65562da996d184686db9d0ea718b91 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b48c24c2d710cf34810c555dcef883a3d35a9c08 4385ddd654d90245eeb83b3cb539670ab5c85ba4 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","drivers/infiniband/hw/irdma/verbs.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"a80b3b13786e9ab1c52b31a1f16c7d6708fa9220","status":"affected","version":"b48c24c2d710cf34810c555dcef883a3d35a9c08","versionType":"git"},{"lessThan":"3159c6fac43dc24b34d31971884d98a7a1bf4c4b","status":"affected","version":"b48c24c2d710cf34810c555dcef883a3d35a9c08","versionType":"git"},{"lessThan":"ad360a31092a870633ec255b96f50181628b4de0","status":"affected","version":"b48c24c2d710cf34810c555dcef883a3d35a9c08","versionType":"git"},{"lessThan":"d566002de555b18cc395012c5c1cb8682fc6d2a9","status":"affected","version":"b48c24c2d710cf34810c555dcef883a3d35a9c08","versionType":"git"},{"lessThan":"54cab78df0375196aaec4e3109191653d21751df","status":"affected","version":"b48c24c2d710cf34810c555dcef883a3d35a9c08","versionType":"git"},{"lessThan":"d5aa82da8f65562da996d184686db9d0ea718b91","status":"affected","version":"b48c24c2d710cf34810c555dcef883a3d35a9c08","versionType":"git"},{"lessThan":"4385ddd654d90245eeb83b3cb539670ab5c85ba4","status":"affected","version":"b48c24c2d710cf34810c555dcef883a3d35a9c08","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/infiniband/hw/irdma/verbs.c","drivers/infiniband/hw/irdma/verbs.h"],"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 OOB read during CQ MR registration\n\nSashiko pointed out an unrelated bug during a previous patch:\nhttps://sashiko.dev/#/patchset/20260512183852.614045-1-jmoroni%40google.com\n\nThis change fixes the bug by eliminating the cqmr->split field which\nwas not being set properly and instead just checks the CQ resize\nfeature flag directly.\n\nThe cqmr->split field essentially tracks whether IRDMA_FEATURE_CQ_RESIZE\nis set, but it was not being set until CQ creation time, which is _after_\nCQ memory registration (the only other place where it is referenced).\n\nAs a result, it would always be false during MR registration and would\ntherefore cause irdma_handle_q_mem to populate cqmr->shadow even for GEN_2\nHW and beyond:\n\n    cqmr->shadow = (dma_addr_t)arr[req->cq_pages];\n\nThe issue is that for GEN_2 and beyond, req->cq_pages may be exactly equal\nto iwmr->page_cnt and therefore equal to the size of arr, which would cause\nan OOB read by one."}],"providerMetadata":{"dateUpdated":"2026-08-15T05:58:34.606Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/a80b3b13786e9ab1c52b31a1f16c7d6708fa9220"},{"url":"https://git.kernel.org/stable/c/3159c6fac43dc24b34d31971884d98a7a1bf4c4b"},{"url":"https://git.kernel.org/stable/c/ad360a31092a870633ec255b96f50181628b4de0"},{"url":"https://git.kernel.org/stable/c/d566002de555b18cc395012c5c1cb8682fc6d2a9"},{"url":"https://git.kernel.org/stable/c/54cab78df0375196aaec4e3109191653d21751df"},{"url":"https://git.kernel.org/stable/c/d5aa82da8f65562da996d184686db9d0ea718b91"},{"url":"https://git.kernel.org/stable/c/4385ddd654d90245eeb83b3cb539670ab5c85ba4"}],"title":"RDMA/irdma: Fix OOB read during CQ MR registration","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-74346","datePublished":"2026-08-15T05:58:34.606Z","dateReserved":"2026-08-15T05:44:03.886Z","dateUpdated":"2026-08-15T05:58:34.606Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-15 06:22:35","lastModifiedDate":"2026-08-15 06:22:35","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"74346","Ordinal":"1","Title":"RDMA/irdma: Fix OOB read during CQ MR registration","CVE":"CVE-2026-74346","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"74346","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/irdma: Fix OOB read during CQ MR registration\n\nSashiko pointed out an unrelated bug during a previous patch:\nhttps://sashiko.dev/#/patchset/20260512183852.614045-1-jmoroni%40google.com\n\nThis change fixes the bug by eliminating the cqmr->split field which\nwas not being set properly and instead just checks the CQ resize\nfeature flag directly.\n\nThe cqmr->split field essentially tracks whether IRDMA_FEATURE_CQ_RESIZE\nis set, but it was not being set until CQ creation time, which is _after_\nCQ memory registration (the only other place where it is referenced).\n\nAs a result, it would always be false during MR registration and would\ntherefore cause irdma_handle_q_mem to populate cqmr->shadow even for GEN_2\nHW and beyond:\n\n    cqmr->shadow = (dma_addr_t)arr[req->cq_pages];\n\nThe issue is that for GEN_2 and beyond, req->cq_pages may be exactly equal\nto iwmr->page_cnt and therefore equal to the size of arr, which would cause\nan OOB read by one.","Type":"Description","Title":"RDMA/irdma: Fix OOB read during CQ MR registration"}]}}}