{"id":"CVE-2025-71162","revision":null,"records":[{"revision":"5d5bc8fe22a64f8782a229050b2ef4a0","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-71162","aliases":[],"title":"dmaengine: tegra-adma: Fix use-after-free","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: tegra-adma: Fix use-after-free\n\nA use-after-free bug exists in the Tegra ADMA driver when audio streams\nare terminated, particularly during XRUN conditions. The issue occurs\nwhen the DMA buffer is freed by tegra_adma_terminate_all() before the\nvchan completion tasklet finishes accessing it.\n\nThe race condition follows this sequence:\n\n 1. DMA transfer completes, triggering an interrupt that schedules the\n completion tasklet (tasklet has not executed yet)\n 2. Audio playback stops, calling tegra_adma_terminate_all() which\n frees the DMA buffer memory via kfree()\n 3. The scheduled tasklet finally executes, calling vchan_complete()\n which attempts to access the already-freed memory\n\nSince tasklets can execute at any time after being scheduled, there is\nno guarantee that the buffer will remain valid when vchan_complete()\nruns.\n\nFix this by properly synchronizing the virtual channel completion:\n - Calling vchan_terminate_vdesc() in tegra_adma_stop() to mark the\n descriptors as terminated instead of freeing the descriptor.\n - Add the callback tegra_adma_synchronize() that calls\n vchan_synchronize() which kills any pending tasklets and frees any\n terminated descriptors.\n\nCrash logs:\n[ 337.427523] BUG: KASAN: use-after-free in vchan_complete+0x124/0x3b0\n[ 337.427544] Read of size 8 at addr ffff000132055428 by task swapper/0/0\n\n[ 337.427562] Call trace:\n[ 337.427564] dump_backtrace+0x0/0x320\n[ 337.427571] show_stack+0x20/0x30\n[ 337.427575] dump_stack_lvl+0x68/0x84\n[ 337.427584] print_address_description.constprop.0+0x74/0x2b8\n[ 337.427590] kasan_report+0x1f4/0x210\n[ 337.427598] __asan_load8+0xa0/0xd0\n[ 337.427603] vchan_complete+0x124/0x3b0\n[ 337.427609] tasklet_action_common.constprop.0+0x190/0x1d0\n[ 337.427617] tasklet_action+0x30/0x40\n[ 337.427623] __do_softirq+0x1a0/0x5c4\n[ 337.427628] irq_exit+0x110/0x140\n[ 337.427633] handle_domain_irq+0xa4/0xe0\n[ 337.427640] gic_handle_irq+0x64/0x160\n[ 337.427644] call_on_irq_stack+0x20/0x4c\n[ 337.427649] do_interrupt_handler+0x7c/0x90\n[ 337.427654] el1_interrupt+0x30/0x80\n[ 337.427659] el1h_64_irq_handler+0x18/0x30\n[ 337.427663] el1h_64_irq+0x7c/0x80\n[ 337.427667] cpuidle_enter_state+0xe4/0x540\n[ 337.427674] cpuidle_enter+0x54/0x80\n[ 337.427679] do_idle+0x2e0/0x380\n[ 337.427685] cpu_startup_entry+0x2c/0x70\n[ 337.427690] rest_init+0x114/0x130\n[ 337.427695] arch_call_rest_init+0x18/0x24\n[ 337.427702] start_kernel+0x380/0x3b4\n[ 337.427706] __primary_switched+0xc0/0xc8","state":0,"publishedAt":"2026-01-25T14:36:09.029+00:00","modifiedAt":"2026-10-15T01:11:01.219+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"drivers/dma/tegra210-adma.c\"\n ],\n \"versions\": [\n {\n \"version\": \"f46b195799b5cb05338e7c44cb3617eacb56d755\",\n \"lessThan\": \"5f8d1d66a952d0396671e1f21ff8127a4d14fb4e\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"f46b195799b5cb05338e7c44cb3617eacb56d755\",\n \"lessThan\": \"76992310f80776b4d1f7f8915f59b92883a3e44c\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"f46b195799b5cb05338e7c44cb3617eacb56d755\",\n \"lessThan\": \"ae3eed72de682ddbba507ed2d6b848c21a6b721e\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"f46b195799b5cb05338e7c44cb3617eacb56d755\",\n \"lessThan\": \"59cb421b0902fbef2b9512ae8ba198a20f26b41f\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"f46b195799b5cb05338e7c44cb3617eacb56d755\",\n \"lessThan\": \"cb2c9c4bb1322cc3c9984ad17db8cdd2663879ca\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"f46b195799b5cb05338e7c44cb3617eacb56d755\",\n \"lessThan\": \"be655c3736b3546f39bc8116ffbf2a3b6cac96c4\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"f46b195799b5cb05338e7c44cb3617eacb56d755\",\n \"lessThan\": \"2efd07a7c36949e6fa36a69183df24d368bf9e96\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"drivers/dma/tegra210-adma.c\"\n ],\n \"versions\": [\n {\n \"version\": \"4.7\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"4.7\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.249\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.199\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.162\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.122\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.67\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.7\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.19\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/5f8d1d66a952d0396671e1f21ff8127a4d14fb4e","https://git.kernel.org/stable/c/76992310f80776b4d1f7f8915f59b92883a3e44c","https://git.kernel.org/stable/c/ae3eed72de682ddbba507ed2d6b848c21a6b721e","https://git.kernel.org/stable/c/59cb421b0902fbef2b9512ae8ba198a20f26b41f","https://git.kernel.org/stable/c/cb2c9c4bb1322cc3c9984ad17db8cdd2663879ca","https://git.kernel.org/stable/c/be655c3736b3546f39bc8116ffbf2a3b6cac96c4","https://git.kernel.org/stable/c/2efd07a7c36949e6fa36a69183df24d368bf9e96"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-71162","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-71162","identifiers":["CVE-2025-71162"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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