{"id":"DEBIAN-CVE-2025-71162","details":"In the Linux kernel, the following vulnerability has been resolved:  dmaengine: tegra-adma: Fix use-after-free  A use-after-free bug exists in the Tegra ADMA driver when audio streams are terminated, particularly during XRUN conditions. The issue occurs when the DMA buffer is freed by tegra_adma_terminate_all() before the vchan completion tasklet finishes accessing it.  The race condition follows this sequence:    1. DMA transfer completes, triggering an interrupt that schedules the      completion tasklet (tasklet has not executed yet)   2. Audio playback stops, calling tegra_adma_terminate_all() which      frees the DMA buffer memory via kfree()   3. The scheduled tasklet finally executes, calling vchan_complete()      which attempts to access the already-freed memory  Since tasklets can execute at any time after being scheduled, there is no guarantee that the buffer will remain valid when vchan_complete() runs.  Fix this by properly synchronizing the virtual channel completion:  - Calling vchan_terminate_vdesc() in tegra_adma_stop() to mark the    descriptors as terminated instead of freeing the descriptor.  - Add the callback tegra_adma_synchronize() that calls    vchan_synchronize() which kills any pending tasklets and frees any    terminated descriptors.  Crash logs: [  337.427523] BUG: KASAN: use-after-free in vchan_complete+0x124/0x3b0 [  337.427544] Read of size 8 at addr ffff000132055428 by task swapper/0/0  [  337.427562] Call trace: [  337.427564]  dump_backtrace+0x0/0x320 [  337.427571]  show_stack+0x20/0x30 [  337.427575]  dump_stack_lvl+0x68/0x84 [  337.427584]  print_address_description.constprop.0+0x74/0x2b8 [  337.427590]  kasan_report+0x1f4/0x210 [  337.427598]  __asan_load8+0xa0/0xd0 [  337.427603]  vchan_complete+0x124/0x3b0 [  337.427609]  tasklet_action_common.constprop.0+0x190/0x1d0 [  337.427617]  tasklet_action+0x30/0x40 [  337.427623]  __do_softirq+0x1a0/0x5c4 [  337.427628]  irq_exit+0x110/0x140 [  337.427633]  handle_domain_irq+0xa4/0xe0 [  337.427640]  gic_handle_irq+0x64/0x160 [  337.427644]  call_on_irq_stack+0x20/0x4c [  337.427649]  do_interrupt_handler+0x7c/0x90 [  337.427654]  el1_interrupt+0x30/0x80 [  337.427659]  el1h_64_irq_handler+0x18/0x30 [  337.427663]  el1h_64_irq+0x7c/0x80 [  337.427667]  cpuidle_enter_state+0xe4/0x540 [  337.427674]  cpuidle_enter+0x54/0x80 [  337.427679]  do_idle+0x2e0/0x380 [  337.427685]  cpu_startup_entry+0x2c/0x70 [  337.427690]  rest_init+0x114/0x130 [  337.427695]  arch_call_rest_init+0x18/0x24 [  337.427702]  start_kernel+0x380/0x3b4 [  337.427706]  __primary_switched+0xc0/0xc8","modified":"2026-09-01T16:06:22.609949683Z","published":"2026-01-25T15:15:53.947Z","upstream":["CVE-2025-71162"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2025-71162"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.162-1"}]}],"versions":["6.1.106-1","6.1.106-2","6.1.106-3","6.1.112-1","6.1.115-1","6.1.119-1","6.1.123-1","6.1.124-1","6.1.128-1","6.1.129-1","6.1.133-1","6.1.135-1","6.1.137-1","6.1.139-1","6.1.140-1","6.1.147-1","6.1.148-1","6.1.153-1","6.1.158-1","6.1.159-1","6.1.27-1","6.1.37-1","6.1.38-1","6.1.38-2","6.1.38-2~bpo11+1","6.1.38-3","6.1.38-4","6.1.38-4~bpo11+1","6.1.52-1","6.1.55-1","6.1.55-1~bpo11+1","6.1.64-1","6.1.66-1","6.1.67-1","6.1.69-1","6.1.69-1~bpo11+1","6.1.76-1","6.1.76-1~bpo11+1","6.1.82-1","6.1.85-1","6.1.90-1","6.1.90-1~bpo11+1","6.1.94-1","6.1.94-1~bpo11+1","6.1.98-1","6.1.99-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-71162.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.69-1"}]}],"versions":["6.12.38-1","6.12.41-1","6.12.43-1","6.12.43-1~bpo12+1","6.12.48-1","6.12.57-1","6.12.57-1~bpo12+1","6.12.63-1","6.12.63-1~bpo12+1","6.12.69-1~bpo12+1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-71162.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.18.8-1"}]}],"versions":["6.12.100-1","6.12.101-1","6.12.105-1","6.12.107-1","6.12.38-1","6.12.41-1","6.12.43-1","6.12.43-1~bpo12+1","6.12.48-1","6.12.57-1","6.12.57-1~bpo12+1","6.12.63-1","6.12.63-1~bpo12+1","6.12.69-1","6.12.69-1~bpo12+1","6.12.73-1","6.12.73-1~bpo12+1","6.12.74-1","6.12.74-2","6.12.74-2~bpo12+1","6.12.85-1","6.12.85-1~bpo12+1","6.12.86-1","6.12.86-1~bpo12+1","6.12.88-1","6.12.88-1~bpo12+1","6.12.90-1","6.12.90-1~bpo12+1","6.12.90-2","6.12.90-2~bpo12+1","6.12.94-1","6.12.94-1~bpo12+1","6.12.95-1","6.12.95-1~bpo12+1","6.12.96-1","6.13.10-1~exp1","6.13.11-1~exp1","6.13.2-1~exp1","6.13.3-1~exp1","6.13.4-1~exp1","6.13.5-1~exp1","6.13.6-1~exp1","6.13.7-1~exp1","6.13.8-1~exp1","6.13.9-1~exp1","6.13~rc6-1~exp1","6.13~rc7-1~exp1","6.14.3-1~exp1","6.14.5-1~exp1","6.14.6-1~exp1","6.15-1~exp1","6.15.1-1~exp1","6.15.2-1~exp1","6.15.3-1~exp1","6.15.4-1~exp1","6.15.5-1~exp1","6.15.6-1~exp1","6.15~rc7-1~exp1","6.16-1~exp1","6.16.1-1~exp1","6.16.10-1","6.16.11-1","6.16.12-1","6.16.12-1~bpo13+1","6.16.12-2","6.16.3-1","6.16.3-1~bpo13+1","6.16.5-1","6.16.6-1","6.16.7-1","6.16.8-1","6.16.9-1","6.16~rc7-1~exp1","6.17.10-1","6.17.11-1","6.17.12-1","6.17.13-1","6.17.13-1~bpo13+1","6.17.2-1~exp1","6.17.5-1~exp1","6.17.6-1","6.17.7-1","6.17.7-2","6.17.8-1","6.17.8-1~bpo13+1","6.17.9-1","6.18.1-1~exp1","6.18.2-1~exp1","6.18.3-1","6.18.5-1","6.18.5-1~bpo13+1","6.18~rc4-1~exp1","6.18~rc4-1~exp2","6.18~rc5-1~exp1","6.18~rc6-1~exp1","6.18~rc7-1~exp1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-71162.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}