{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-09T08:53:06.387","vulnerabilities":[{"cve":{"id":"CVE-2025-71221","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2026-02-14T17:15:54.450","lastModified":"2026-03-25T11:16:15.247","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: mmp_pdma: Fix race condition in mmp_pdma_residue()\n\nAdd proper locking in mmp_pdma_residue() to prevent use-after-free when\naccessing descriptor list and descriptor contents.\n\nThe race occurs when multiple threads call tx_status() while the tasklet\non another CPU is freeing completed descriptors:\n\nCPU 0                              CPU 1\n-----                              -----\nmmp_pdma_tx_status()\nmmp_pdma_residue()\n  -> NO LOCK held\n     list_for_each_entry(sw, ..)\n                                   DMA interrupt\n                                   dma_do_tasklet()\n                                     -> spin_lock(&desc_lock)\n                                        list_move(sw->node, ...)\n                                        spin_unlock(&desc_lock)\n  |                                     dma_pool_free(sw) <- FREED!\n  -> access sw->desc <- UAF!\n\nThis issue can be reproduced when running dmatest on the same channel with\nmultiple threads (threads_per_chan > 1).\n\nFix by protecting the chain_running list iteration and descriptor access\nwith the chan->desc_lock spinlock."},{"lang":"es","value":"En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ndmaengine: mmp_pdma: Corrección de condición de carrera en mmp_pdma_residue()\n\nAñadir bloqueo adecuado en mmp_pdma_residue() para prevenir uso después de liberación al acceder a la lista de descriptores y al contenido del descriptor.\n\nLa condición de carrera ocurre cuando múltiples hilos llaman a tx_status() mientras el tasklet en otra CPU está liberando descriptores completados:\n\nCPU 0                              CPU 1\n-----                              -----\nmmp_pdma_tx_status()\nmmp_pdma_residue()\n  -&gt; SIN BLOQUEO mantenido\n     list_for_each_entry(sw, ..)\n                                   Interrupción DMA\n                                   dma_do_tasklet()\n                                     -&gt; spin_lock(&amp;desc_lock)\n                                        list_move(sw-&gt;node, ...)\n                                        spin_unlock(&amp;desc_lock)\n  |                                     dma_pool_free(sw) &lt;- ¡LIBERADO!\n  -&gt; acceso a sw-&gt;desc &lt;- ¡UAF!\n\nEste problema puede ser reproducido al ejecutar dmatest en el mismo canal con múltiples hilos (hilos_por_canal &gt; 1).\n\nSolución protegiendo la iteración de la lista chain_running y el acceso al descriptor con el spinlock chan-&gt;desc_lock."}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.0,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.0,"impactScore":5.9}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-362"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.16","versionEndExcluding":"6.18.10","matchCriteriaId":"D20A40DD-5043-4C92-9FB6-C88CA3BBEECE"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*","matchCriteriaId":"17B67AA7-40D6-4AFA-8459-F200F3D7CFD1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*","matchCriteriaId":"C47E4CC9-C826-4FA9-B014-7FE3D9B318B2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*","matchCriteriaId":"F71D92C0-C023-48BD-B3B6-70B638EEE298"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*","matchCriteriaId":"13580667-0A98-40CC-B29F-D12790B91BDB"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:*","matchCriteriaId":"CAD1FED7-CF48-47BF-AC7D-7B6FA3C065FC"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/9f665b3c3d9a168410251f27a5d019b7bf93185c","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/a143545855bc2c6e1330f6f57ae375ac44af00a7","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/dfb5e05227745de43b7fd589721817a4337c970d","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/eba0c75670c022cb1f948600db972524bcfe8166","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/fc023b8fab057f0c910856ff36d3e12a30b7af4a","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}]}}]}