{"cve":"CVE-2021-47130","nvd":{"published":"2024-03-15T21:15:07.577","modified":"2026-08-04T10:16:47.630","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet: fix freeing unallocated p2pmem\n\nIn case p2p device was found but the p2p pool is empty, the nvme target\nis still trying to free the sgl from the p2p pool instead of the\nregular sgl pool and causing a crash (BUG() is called). Instead, assign\nthe p2p_dev for the request only if it was allocated from p2p pool.\n\nThis is the crash that was caused:\n\n[Sun May 30 19:13:53 2021] ------------[ cut here ]------------\n[Sun May 30 19:13:53 2021] kernel BUG at lib/genalloc.c:518!\n[Sun May 30 19:13:53 2021] invalid opcode: 0000 [#1] SMP PTI\n...\n[Sun May 30 19:13:53 2021] kernel BUG at lib/genalloc.c:518!\n...\n[Sun May 30 19:13:53 2021] RIP: 0010:gen_pool_free_owner+0xa8/0xb0\n...\n[Sun May 30 19:13:53 2021] Call Trace:\n[Sun May 30 19:13:53 2021] ------------[ cut here ]------------\n[Sun May 30 19:13:53 2021]  pci_free_p2pmem+0x2b/0x70\n[Sun May 30 19:13:53 2021]  pci_p2pmem_free_sgl+0x4f/0x80\n[Sun May 30 19:13:53 2021]  nvmet_req_free_sgls+0x1e/0x80 [nvmet]\n[Sun May 30 19:13:53 2021] kernel BUG at lib/genalloc.c:518!\n[Sun May 30 19:13:53 2021]  nvmet_rdma_release_rsp+0x4e/0x1f0 [nvmet_rdma]\n[Sun May 30 19:13:53 2021]  nvmet_rdma_send_done+0x1c/0x60 [nvmet_rdma]","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-770"],"references":["https://git.kernel.org/stable/c/8a452d62e7cea3c8a2676a3b89a9118755a1a271","https://git.kernel.org/stable/c/bcd9a0797d73eeff659582f23277e7ab6e5f18f3","https://git.kernel.org/stable/c/c440cd080761b18a52cac20f2a42e5da1e3995af","https://git.kernel.org/stable/c/8a452d62e7cea3c8a2676a3b89a9118755a1a271","https://git.kernel.org/stable/c/bcd9a0797d73eeff659582f23277e7ab6e5f18f3"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:46:54.846886191+00:00"},"epss":{"cve":"CVE-2021-47130","score":0.00639,"percentile":0.50627,"date":"2026-11-01"},"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."]}