{"id":"CVE-2026-64019","summary":"nvme-pci: fix dma mapping leak on data setup error","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnvme-pci: fix dma mapping leak on data setup error\n\nWe're leaking the initial DMA mapping during iteration if we fail to\nallocate the tracking descriptor for both PRP and SGL. Unmap the\niterator directly; we can't use the existing unmap helper because it\ndepends on the tracking descriptor being successfully allocated, so a\nnew one for an in-use iterator is provided.\n\nThe mappings were also leaking when the driver detects an invalid\nbio_vec when mapping PRPs, so fix that too.","modified":"2026-07-21T03:47:47.876742449Z","published":"2026-07-19T15:39:13.400Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64019.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/1bf86336e4b6cf40873fda47a7fe191446864937"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e50db059ec8e63bc50b1cc039e2502cb5ea75a70"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64019.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64019"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"7ce3c1dd78fca86ea8b9aee370db10c7a8cfc3c2"},{"fixed":"e50db059ec8e63bc50b1cc039e2502cb5ea75a70"},{"fixed":"1bf86336e4b6cf40873fda47a7fe191446864937"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64019.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.17.0"},{"fixed":"7.0.11"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64019.json"}}],"schema_version":"1.7.5"}