{"id":"DEBIAN-CVE-2025-38056","details":"In the Linux kernel, the following vulnerability has been resolved:  ASoC: SOF: Intel: hda: Fix UAF when reloading module  hda_generic_machine_select() appends -idisp to the tplg filename by allocating a new string with devm_kasprintf(), then stores the string right back into the global variable snd_soc_acpi_intel_hda_machines. When the module is unloaded, this memory is freed, resulting in a global variable pointing to freed memory.  Reloading the module then triggers a use-after-free:  BUG: KFENCE: use-after-free read in string+0x48/0xe0  Use-after-free read at 0x00000000967e0109 (in kfence-#99):  string+0x48/0xe0  vsnprintf+0x329/0x6e0  devm_kvasprintf+0x54/0xb0  devm_kasprintf+0x58/0x80  hda_machine_select.cold+0x198/0x17a2 [snd_sof_intel_hda_generic]  sof_probe_work+0x7f/0x600 [snd_sof]  process_one_work+0x17b/0x330  worker_thread+0x2ce/0x3f0  kthread+0xcf/0x100  ret_from_fork+0x31/0x50  ret_from_fork_asm+0x1a/0x30  kfence-#99: 0x00000000198a940f-0x00000000ace47d9d, size=64, cache=kmalloc-64  allocated by task 333 on cpu 8 at 17.798069s (130.453553s ago):  devm_kmalloc+0x52/0x120  devm_kvasprintf+0x66/0xb0  devm_kasprintf+0x58/0x80  hda_machine_select.cold+0x198/0x17a2 [snd_sof_intel_hda_generic]  sof_probe_work+0x7f/0x600 [snd_sof]  process_one_work+0x17b/0x330  worker_thread+0x2ce/0x3f0  kthread+0xcf/0x100  ret_from_fork+0x31/0x50  ret_from_fork_asm+0x1a/0x30  freed by task 1543 on cpu 4 at 141.586686s (6.665010s ago):  release_nodes+0x43/0xb0  devres_release_all+0x90/0xf0  device_unbind_cleanup+0xe/0x70  device_release_driver_internal+0x1c1/0x200  driver_detach+0x48/0x90  bus_remove_driver+0x6d/0xf0  pci_unregister_driver+0x42/0xb0  __do_sys_delete_module+0x1d1/0x310  do_syscall_64+0x82/0x190  entry_SYSCALL_64_after_hwframe+0x76/0x7e  Fix it by copying the match array with devm_kmemdup_array() before we modify it.","modified":"2026-08-27T23:05:29.278880103Z","published":"2025-06-18T10:15:38.340Z","upstream":["CVE-2025-38056"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2025-38056"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.32-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-38056.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.32-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-38056.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"}]}