{"api_version":"1","generated_at":"2026-04-23T03:48:17+00:00","cve":"CVE-2026-31491","urls":{"html":"https://cve.report/CVE-2026-31491","api":"https://cve.report/api/cve/CVE-2026-31491.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-31491","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-31491"},"summary":{"title":"RDMA/irdma: Harden depth calculation functions","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/irdma: Harden depth calculation functions\n\nAn issue was exposed where OS can pass in U32_MAX for SQ/RQ/SRQ size.\nThis can cause integer overflow and truncation of SQ/RQ/SRQ depth\nreturning a success when it should have failed.\n\nHarden the functions to do all depth calculations and boundary\nchecking in u64 sizes.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-04-22 14:16:46","updated_at":"2026-04-22 14:16:46"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/cbd852f5700eb3f64392452faf693ac45cae8281","name":"https://git.kernel.org/stable/c/cbd852f5700eb3f64392452faf693ac45cae8281","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e37afcb56ae070477741fe2d6e61fc0c542cce2d","name":"https://git.kernel.org/stable/c/e37afcb56ae070477741fe2d6e61fc0c542cce2d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3f08351de5ca4f2f724b86ad252fbc21289467e1","name":"https://git.kernel.org/stable/c/3f08351de5ca4f2f724b86ad252fbc21289467e1","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-31491","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-31491","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 563e1feb5f6ed579acb55850f1bbb831aecf645a 3f08351de5ca4f2f724b86ad252fbc21289467e1 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 563e1feb5f6ed579acb55850f1bbb831aecf645a cbd852f5700eb3f64392452faf693ac45cae8281 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 563e1feb5f6ed579acb55850f1bbb831aecf645a e37afcb56ae070477741fe2d6e61fc0c542cce2d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.18","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.21 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19.11 6.19.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0 * 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/uk.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"3f08351de5ca4f2f724b86ad252fbc21289467e1","status":"affected","version":"563e1feb5f6ed579acb55850f1bbb831aecf645a","versionType":"git"},{"lessThan":"cbd852f5700eb3f64392452faf693ac45cae8281","status":"affected","version":"563e1feb5f6ed579acb55850f1bbb831aecf645a","versionType":"git"},{"lessThan":"e37afcb56ae070477741fe2d6e61fc0c542cce2d","status":"affected","version":"563e1feb5f6ed579acb55850f1bbb831aecf645a","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/infiniband/hw/irdma/uk.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.18"},{"lessThan":"6.18","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.21","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.11","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":"6.18.21","versionStartIncluding":"6.18","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19.11","versionStartIncluding":"6.18","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0","versionStartIncluding":"6.18","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/irdma: Harden depth calculation functions\n\nAn issue was exposed where OS can pass in U32_MAX for SQ/RQ/SRQ size.\nThis can cause integer overflow and truncation of SQ/RQ/SRQ depth\nreturning a success when it should have failed.\n\nHarden the functions to do all depth calculations and boundary\nchecking in u64 sizes."}],"providerMetadata":{"dateUpdated":"2026-04-22T13:54:14.905Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/3f08351de5ca4f2f724b86ad252fbc21289467e1"},{"url":"https://git.kernel.org/stable/c/cbd852f5700eb3f64392452faf693ac45cae8281"},{"url":"https://git.kernel.org/stable/c/e37afcb56ae070477741fe2d6e61fc0c542cce2d"}],"title":"RDMA/irdma: Harden depth calculation functions","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-31491","datePublished":"2026-04-22T13:54:14.905Z","dateReserved":"2026-03-09T15:48:24.102Z","dateUpdated":"2026-04-22T13:54:14.905Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-04-22 14:16:46","lastModifiedDate":"2026-04-22 14:16:46","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"31491","Ordinal":"1","Title":"RDMA/irdma: Harden depth calculation functions","CVE":"CVE-2026-31491","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"31491","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/irdma: Harden depth calculation functions\n\nAn issue was exposed where OS can pass in U32_MAX for SQ/RQ/SRQ size.\nThis can cause integer overflow and truncation of SQ/RQ/SRQ depth\nreturning a success when it should have failed.\n\nHarden the functions to do all depth calculations and boundary\nchecking in u64 sizes.","Type":"Description","Title":"RDMA/irdma: Harden depth calculation functions"}]}}}