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SIN BLOQUEO mantenido\n list_for_each_entry(sw, ..)\n Interrupci\u00f3n 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;- \u00a1LIBERADO!\n -&gt; acceso a sw-&gt;desc &lt;- \u00a1UAF!\n\nEste problema puede ser reproducido al ejecutar dmatest en el mismo canal con m\u00faltiples hilos (hilos_por_canal &gt; 1).\n\nSoluci\u00f3n protegiendo la iteraci\u00f3n de la lista chain_running y el acceso al descriptor con el spinlock chan-&gt;desc_lock."}], "id": "CVE-2025-71221", "lastModified": "2026-06-17T10:03:54.090", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.0, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2026-02-14T17:15:54.450", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3f0e0e2d9e752570041e95fd04635e2580097819"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "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", "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"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-362"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: dmaengine: mmp_pdma: Fix race condition in mmp_pdma_residue()", "id": "2439909", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2439909"}, "csaw": false, "details": ["In the Linux kernel, the following vulnerability has been resolved:\ndmaengine: mmp_pdma: Fix race condition in mmp_pdma_residue()\nAdd proper locking in mmp_pdma_residue() to prevent use-after-free when\naccessing descriptor list and descriptor contents.\nThe race occurs when multiple threads call tx_status() while the tasklet\non another CPU is freeing completed descriptors:\nCPU 0 CPU 1\n----- -----\nmmp_pdma_tx_status()\nmmp_pdma_residue()\n-> NO LOCK held\nlist_for_each_entry(sw, ..)\nDMA interrupt\ndma_do_tasklet()\n-> spin_lock(&desc_lock)\nlist_move(sw->node, ...)\nspin_unlock(&desc_lock)\n| dma_pool_free(sw) <- FREED!\n-> access sw->desc <- UAF!\nThis issue can be reproduced when running dmatest on the same channel with\nmultiple threads (threads_per_chan > 1).\nFix by protecting the chain_running list iteration and descriptor access\nwith the chan->desc_lock spinlock."], "name": "CVE-2025-71221", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-02-14T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-71221\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-71221\nhttps://lore.kernel.org/linux-cve-announce/2026021426-CVE-2025-71221-2987@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2026-02-16T09:44:10.117258+00:00", "updated": "2026-02-16T09:44:10.117335+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}