{"id":"CVE-2026-72476","title":"In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: Fix possible use after free\n\nIn dma_release_channel(), check chan->device->privatecnt after call\ndma_chan_put()","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: Fix possible use after free\n\nIn dma_release_channel(), check chan->device->privatecnt after call\ndma_chan_put(). However, dma_chan_put() call dma_device_put(…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-825"],"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","affected":["enterprise_linux 10","enterprise_linux 6","enterprise_linux 7","enterprise_linux 8","enterprise_linux 9"],"published":"2026-08-15","updated":"2026-10-16","sourceUpdated":"2026-10-16T19:17:32.340","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-72476","references":[{"url":"https://git.kernel.org/stable/c/0bc191050c3253da8ef4bfaf157c44efed6e22cd","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/329ec20a86091d2a6e5b4fe507545e7d678a22a2","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3b0240483dc977dbec4f3bc7a5383d4691ecb625","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/444f96066937f3fdf0e79b53289cff223c7d638b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/5876f38b67a309c00628942cb25679749b53b397","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/92f853f0645aebf1d05d333e97ab7c342ace1892","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/9bdc8dce4068dadbdf7cf5ad6d4983e2afffedce","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ab438a9efb9042c79d2f8db28a326d55feb8591f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72476.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-72476"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2516293"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-72476"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72476"},{"url":"https://lore.kernel.org/linux-cve-announce/2026081536-CVE-2026-72476-d0b7@gregkh/T"}],"tags":["nvd","csaf","vex","red-hat","cve.org","score-dispute"],"epss":0.00171,"epssPercentile":0.06448,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-16T18:50:35.862393Z"},"scores":{"nvd":7.8,"vendor":5.5,"cna":7.8},"ingestedAt":"2026-10-16T19:46:24.391Z","slug":"CVE-2026-72476","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: Fix possible use after free\n\nIn dma_release_channel(), check chan->device->privatecnt after call\ndma_chan_put(). However, dma_chan_put() call dma_device_put() which could\nrelease the last reference of the device if the DMA provider is already\ngone and hence free it.\n\nFixes it by moving dma_chan_put() after the check.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-10-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72476.json)","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":230309,"id":"CVE-2026-72476","ts":1793130917075,"field":"cvss","old":"5.5","new":"7.8"},{"seq":230308,"id":"CVE-2026-72476","ts":1793130917075,"field":"severity","old":"medium","new":"high"},{"seq":223623,"id":"CVE-2026-72476","ts":1792238340363,"field":"cvss","old":"7.8","new":"5.5"},{"seq":223622,"id":"CVE-2026-72476","ts":1792238340363,"field":"severity","old":"high","new":"medium"}]}