{"cve":"CVE-2026-74346","nvd":{"published":"2026-08-15T06:22:35.720","modified":"2026-08-17T06:19:29.180","status":"Received","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.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/3159c6fac43dc24b34d31971884d98a7a1bf4c4b","https://git.kernel.org/stable/c/4385ddd654d90245eeb83b3cb539670ab5c85ba4","https://git.kernel.org/stable/c/54cab78df0375196aaec4e3109191653d21751df","https://git.kernel.org/stable/c/a80b3b13786e9ab1c52b31a1f16c7d6708fa9220","https://git.kernel.org/stable/c/ad360a31092a870633ec255b96f50181628b4de0"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:49:10.689564601+00:00"},"epss":{"cve":"CVE-2026-74346","score":0.00173,"percentile":0.06638,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}