{"id":"CVE-2025-71186","title":"dmaengine: stm32: dmamux: fix device leak on route allocation","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: stm32: dmamux: fix device leak on route allocation\n\nMake sure to drop the reference taken when looking up the DMA mux\nplatform device during route allocation…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= df7e762db5f6c8dbd9e480f1c9ef9851de346657 < 3b42020e6790a5e19b36c187ed5b488a5716f97f","Linux >= df7e762db5f6c8dbd9e480f1c9ef9851de346657 < 6393da54dcb3488c080a183c4182ddec71ba8d7f","Linux >= df7e762db5f6c8dbd9e480f1c9ef9851de346657 < 1dda2a32303df0091896b01a9d09070d61fa344c","Linux >= df7e762db5f6c8dbd9e480f1c9ef9851de346657 < 1a179ac01ff3993ab97e33cc77c316ed7415cda1","Linux >= df7e762db5f6c8dbd9e480f1c9ef9851de346657 < 2fb10259d4efb4367787b5ae9c94192e8a91c648","Linux >= df7e762db5f6c8dbd9e480f1c9ef9851de346657 < 3ef52d31cce8ba816739085a61efe07b63c6cf27","Linux >= df7e762db5f6c8dbd9e480f1c9ef9851de346657 < dd6e4943889fb354efa3f700e42739da9bddb6ef","Linux 4.15"],"published":"2026-01-31","updated":"2026-09-08","sourceUpdated":"2026-09-08T08:44:08.983Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-71186","references":[{"url":"https://git.kernel.org/stable/c/3b42020e6790a5e19b36c187ed5b488a5716f97f"},{"url":"https://git.kernel.org/stable/c/6393da54dcb3488c080a183c4182ddec71ba8d7f"},{"url":"https://git.kernel.org/stable/c/1dda2a32303df0091896b01a9d09070d61fa344c"},{"url":"https://git.kernel.org/stable/c/1a179ac01ff3993ab97e33cc77c316ed7415cda1"},{"url":"https://git.kernel.org/stable/c/2fb10259d4efb4367787b5ae9c94192e8a91c648"},{"url":"https://git.kernel.org/stable/c/3ef52d31cce8ba816739085a61efe07b63c6cf27"},{"url":"https://git.kernel.org/stable/c/dd6e4943889fb354efa3f700e42739da9bddb6ef"}],"tags":["cve.org"],"epss":0.00199,"epssPercentile":0.09997,"ingestedAt":"2026-09-08T15:33:26.994Z","slug":"CVE-2025-71186","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: stm32: dmamux: fix device leak on route allocation\n\nMake sure to drop the reference taken when looking up the DMA mux\nplatform device during route allocation.\n\nNote that holding a reference to a device does not prevent its driver\ndata from going away so there is no point in keeping the reference.\n\n## Affected\n\n- `Linux >= df7e762db5f6c8dbd9e480f1c9ef9851de346657 < 3b42020e6790a5e19b36c187ed5b488a5716f97f`\n- `Linux >= df7e762db5f6c8dbd9e480f1c9ef9851de346657 < 6393da54dcb3488c080a183c4182ddec71ba8d7f`\n- `Linux >= df7e762db5f6c8dbd9e480f1c9ef9851de346657 < 1dda2a32303df0091896b01a9d09070d61fa344c`\n- `Linux >= df7e762db5f6c8dbd9e480f1c9ef9851de346657 < 1a179ac01ff3993ab97e33cc77c316ed7415cda1`\n- `Linux >= df7e762db5f6c8dbd9e480f1c9ef9851de346657 < 2fb10259d4efb4367787b5ae9c94192e8a91c648`\n- `Linux >= df7e762db5f6c8dbd9e480f1c9ef9851de346657 < 3ef52d31cce8ba816739085a61efe07b63c6cf27`\n- `Linux >= df7e762db5f6c8dbd9e480f1c9ef9851de346657 < dd6e4943889fb354efa3f700e42739da9bddb6ef`\n- `Linux 4.15`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}