{"id":"CVE-2026-72476","title":"dmaengine: Fix possible use after free","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","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= 0f571515c332e00b3515dbe0859ceaa30ab66e00 < 444f96066937f3fdf0e79b53289cff223c7d638b","Linux >= 0f571515c332e00b3515dbe0859ceaa30ab66e00 < ab438a9efb9042c79d2f8db28a326d55feb8591f","Linux >= 0f571515c332e00b3515dbe0859ceaa30ab66e00 < 9bdc8dce4068dadbdf7cf5ad6d4983e2afffedce","Linux >= 0f571515c332e00b3515dbe0859ceaa30ab66e00 < 5876f38b67a309c00628942cb25679749b53b397","Linux >= 0f571515c332e00b3515dbe0859ceaa30ab66e00 < 3b0240483dc977dbec4f3bc7a5383d4691ecb625","Linux >= 0f571515c332e00b3515dbe0859ceaa30ab66e00 < 329ec20a86091d2a6e5b4fe507545e7d678a22a2","Linux >= 0f571515c332e00b3515dbe0859ceaa30ab66e00 < 0bc191050c3253da8ef4bfaf157c44efed6e22cd","Linux >= 0f571515c332e00b3515dbe0859ceaa30ab66e00 < 92f853f0645aebf1d05d333e97ab7c342ace1892","Linux 2.6.30"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-16T18:50:35.862393Z"},"published":"2026-08-15","updated":"2026-10-16","sourceUpdated":"2026-10-16T18:55:25.895Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-72476","references":[{"url":"https://git.kernel.org/stable/c/444f96066937f3fdf0e79b53289cff223c7d638b"},{"url":"https://git.kernel.org/stable/c/ab438a9efb9042c79d2f8db28a326d55feb8591f"},{"url":"https://git.kernel.org/stable/c/9bdc8dce4068dadbdf7cf5ad6d4983e2afffedce"},{"url":"https://git.kernel.org/stable/c/5876f38b67a309c00628942cb25679749b53b397"},{"url":"https://git.kernel.org/stable/c/3b0240483dc977dbec4f3bc7a5383d4691ecb625"},{"url":"https://git.kernel.org/stable/c/329ec20a86091d2a6e5b4fe507545e7d678a22a2"},{"url":"https://git.kernel.org/stable/c/0bc191050c3253da8ef4bfaf157c44efed6e22cd"},{"url":"https://git.kernel.org/stable/c/92f853f0645aebf1d05d333e97ab7c342ace1892"}],"tags":["cve.org"],"epss":0.00171,"epssPercentile":0.06042,"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## Affected\n\n- `Linux >= 0f571515c332e00b3515dbe0859ceaa30ab66e00 < 444f96066937f3fdf0e79b53289cff223c7d638b`\n- `Linux >= 0f571515c332e00b3515dbe0859ceaa30ab66e00 < ab438a9efb9042c79d2f8db28a326d55feb8591f`\n- `Linux >= 0f571515c332e00b3515dbe0859ceaa30ab66e00 < 9bdc8dce4068dadbdf7cf5ad6d4983e2afffedce`\n- `Linux >= 0f571515c332e00b3515dbe0859ceaa30ab66e00 < 5876f38b67a309c00628942cb25679749b53b397`\n- `Linux >= 0f571515c332e00b3515dbe0859ceaa30ab66e00 < 3b0240483dc977dbec4f3bc7a5383d4691ecb625`\n- `Linux >= 0f571515c332e00b3515dbe0859ceaa30ab66e00 < 329ec20a86091d2a6e5b4fe507545e7d678a22a2`\n- `Linux >= 0f571515c332e00b3515dbe0859ceaa30ab66e00 < 0bc191050c3253da8ef4bfaf157c44efed6e22cd`\n- `Linux >= 0f571515c332e00b3515dbe0859ceaa30ab66e00 < 92f853f0645aebf1d05d333e97ab7c342ace1892`\n- `Linux 2.6.30`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}