{"cve":"CVE-2026-68418","nvd":{"published":"2026-08-10T13:20:35.623","modified":"2026-10-21T13:19:30.280","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/irdma: Prevent user-triggered null deref on QP create\n\nPreviously, the user QP creation path would only attempt to\npopulate iwqp->iwpbl if the user-provided req.user_wqe_bufs\nfield was non-zero. The problem is that iwqp->iwpbl is\nunconditionally dereferenced later on in irdma_setup_virt_qp.\n\nWhile there was a check for iwqp->iwpbl != NULL, this check\nwould only occur if req.user_wqe_bufs was non-zero. The end\nresult is that a user could send a zero user_wqe_bufs value\nand trigger a null ptr deref.\n\nFix this by unconditionally calling irdma_get_pbl and bailing\nif it fails, similar to the CQ and SRQ paths.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/728211c815f6eef28dd3df2a5b6297483185aa20","https://git.kernel.org/stable/c/ad68e0b759f9569f0dfea84f035c91eadb979802","https://git.kernel.org/stable/c/b9b0889071569d43623c260074e159cd8f26adb1","https://git.kernel.org/stable/c/d52ff592abfcd56234f266aa245c489f70b1c554","https://git.kernel.org/stable/c/ec675b4cdfd378d8c9dd8c93126c024f2469bd79"],"products":[],"source":"nvd","synced_at":"2026-10-22T16:41:11.231219466+00:00"},"epss":{"cve":"CVE-2026-68418","score":0.00156,"percentile":0.0473,"date":"2026-10-25"},"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."]}