{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-31491", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-03-09T15:48:24.102Z", "datePublished": "2026-04-22T13:54:14.905Z", "dateUpdated": "2026-04-22T13:54:14.905Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-04-22T13:54:14.905Z"}, "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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/infiniband/hw/irdma/uk.c"], "versions": [{"version": "563e1feb5f6ed579acb55850f1bbb831aecf645a", "lessThan": "3f08351de5ca4f2f724b86ad252fbc21289467e1", "status": "affected", "versionType": "git"}, {"version": "563e1feb5f6ed579acb55850f1bbb831aecf645a", "lessThan": "cbd852f5700eb3f64392452faf693ac45cae8281", "status": "affected", "versionType": "git"}, {"version": "563e1feb5f6ed579acb55850f1bbb831aecf645a", "lessThan": "e37afcb56ae070477741fe2d6e61fc0c542cce2d", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/infiniband/hw/irdma/uk.c"], "versions": [{"version": "6.18", "status": "affected"}, {"version": "0", "lessThan": "6.18", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.21", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.11", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.18", "versionEndExcluding": "6.18.21"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.18", "versionEndExcluding": "6.19.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.18", "versionEndExcluding": "7.0"}]}]}], "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"}}}}

{}

{"cveTags": [], "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."}], "id": "CVE-2026-31491", "lastModified": "2026-04-22T14:16:46.880", "metrics": {}, "published": "2026-04-22T14:16:46.880", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3f08351de5ca4f2f724b86ad252fbc21289467e1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cbd852f5700eb3f64392452faf693ac45cae8281"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e37afcb56ae070477741fe2d6e61fc0c542cce2d"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: RDMA/irdma: Harden depth calculation functions", "id": "2460689", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2460689"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-190", "details": ["A flaw was found in the Linux kernel's RDMA/irdma component. A local attacker could exploit an integer overflow and truncation vulnerability when the operating system passes a maximum unsigned 32-bit integer (U32_MAX) for SQ/RQ/SRQ size. This can lead to the system incorrectly reporting a successful operation when it should have failed, potentially causing unexpected behavior or a denial of service."], "name": "CVE-2026-31491", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-04-22T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-31491\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-31491\nhttps://lore.kernel.org/linux-cve-announce/2026042201-CVE-2026-31491-e599@gregkh/T"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[563e1feb5f6ed579acb55850f1bbb831aecf645a,3f08351de5ca4f2f724b86ad252fbc21289467e1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[563e1feb5f6ed579acb55850f1bbb831aecf645a,cbd852f5700eb3f64392452faf693ac45cae8281)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[563e1feb5f6ed579acb55850f1bbb831aecf645a,e37afcb56ae070477741fe2d6e61fc0c542cce2d)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "6.18"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.18)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.21,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.19.11,6.20.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.0,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-04-22T17:30:22.457337+00:00", "updated": "2026-04-22T17:30:22.457391+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}