{"id":"CVE-2026-64019","title":"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 a…","summary":"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 a…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-401"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 6.17, < 7.0.11","linux_kernel = 7.1"],"patched":["linux_kernel 7.0.11"],"published":"2026-07-19","updated":"2026-10-13","sourceUpdated":"2026-10-13T14:55:33.817","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-64019","references":[{"url":"https://git.kernel.org/stable/c/1bf86336e4b6cf40873fda47a7fe191446864937","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e50db059ec8e63bc50b1cc039e2502cb5ea75a70","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd"],"epss":0.00198,"epssPercentile":0.08866,"ingestedAt":"2026-10-13T15:33:40.022Z","slug":"CVE-2026-64019","body":"## Overview\n\nIn 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.\n\n## Affected\n\n- `linux_kernel >= 6.17, < 7.0.11`\n- `linux_kernel = 7.1`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 7.0.11`","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}