{"cve":"CVE-2021-47265","nvd":{"published":"2024-05-21T15:15:15.147","modified":"2026-06-17T04:17:03.053","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA: Verify port when creating flow rule\n\nValidate port value provided by the user and with that remove no longer\nneeded validation by the driver.  The missing check in the mlx5_ib driver\ncould cause to the below oops.\n\nCall trace:\n  _create_flow_rule+0x2d4/0xf28 [mlx5_ib]\n  mlx5_ib_create_flow+0x2d0/0x5b0 [mlx5_ib]\n  ib_uverbs_ex_create_flow+0x4cc/0x624 [ib_uverbs]\n  ib_uverbs_handler_UVERBS_METHOD_INVOKE_WRITE+0xd4/0x150 [ib_uverbs]\n  ib_uverbs_cmd_verbs.isra.7+0xb28/0xc50 [ib_uverbs]\n  ib_uverbs_ioctl+0x158/0x1d0 [ib_uverbs]\n  do_vfs_ioctl+0xd0/0xaf0\n  ksys_ioctl+0x84/0xb4\n  __arm64_sys_ioctl+0x28/0xc4\n  el0_svc_common.constprop.3+0xa4/0x254\n  el0_svc_handler+0x84/0xa0\n  el0_svc+0x10/0x26c\n Code: b9401260 f9615681 51000400 8b001c20 (f9403c1a)","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":[],"references":["https://git.kernel.org/stable/c/2adcb4c5a52a2623cd2b43efa7041e74d19f3a5e","https://git.kernel.org/stable/c/8dc1b0e0ca204596c50bcd159ee069ae0f998176","https://git.kernel.org/stable/c/2adcb4c5a52a2623cd2b43efa7041e74d19f3a5e","https://git.kernel.org/stable/c/8dc1b0e0ca204596c50bcd159ee069ae0f998176"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:50:30.954589733+00:00"},"epss":{"cve":"CVE-2021-47265","score":0.00196,"percentile":0.09367,"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."]}