{"id":"DEBIAN-CVE-2022-49248","details":"In the Linux kernel, the following vulnerability has been resolved:  ALSA: firewire-lib: fix uninitialized flag for AV/C deferred transaction  AV/C deferred transaction was supported at a commit 00a7bb81c20f (\"ALSA: firewire-lib: Add support for deferred transaction\") while 'deferrable' flag can be uninitialized for non-control/notify AV/C transactions. UBSAN reports it:  kernel: ================================================================================ kernel: UBSAN: invalid-load in /build/linux-aa0B4d/linux-5.15.0/sound/firewire/fcp.c:363:9 kernel: load of value 158 is not a valid value for type '_Bool' kernel: CPU: 3 PID: 182227 Comm: irq/35-firewire Tainted: P           OE     5.15.0-18-generic #18-Ubuntu kernel: Hardware name: Gigabyte Technology Co., Ltd. AX370-Gaming 5/AX370-Gaming 5, BIOS F42b 08/01/2019 kernel: Call Trace: kernel:  \u003cIRQ\u003e kernel:  show_stack+0x52/0x58 kernel:  dump_stack_lvl+0x4a/0x5f kernel:  dump_stack+0x10/0x12 kernel:  ubsan_epilogue+0x9/0x45 kernel:  __ubsan_handle_load_invalid_value.cold+0x44/0x49 kernel:  fcp_response.part.0.cold+0x1a/0x2b [snd_firewire_lib] kernel:  fcp_response+0x28/0x30 [snd_firewire_lib] kernel:  fw_core_handle_request+0x230/0x3d0 [firewire_core] kernel:  handle_ar_packet+0x1d9/0x200 [firewire_ohci] kernel:  ? handle_ar_packet+0x1d9/0x200 [firewire_ohci] kernel:  ? transmit_complete_callback+0x9f/0x120 [firewire_core] kernel:  ar_context_tasklet+0xa8/0x2e0 [firewire_ohci] kernel:  tasklet_action_common.constprop.0+0xea/0xf0 kernel:  tasklet_action+0x22/0x30 kernel:  __do_softirq+0xd9/0x2e3 kernel:  ? irq_finalize_oneshot.part.0+0xf0/0xf0 kernel:  do_softirq+0x75/0xa0 kernel:  \u003c/IRQ\u003e kernel:  \u003cTASK\u003e kernel:  __local_bh_enable_ip+0x50/0x60 kernel:  irq_forced_thread_fn+0x7e/0x90 kernel:  irq_thread+0xba/0x190 kernel:  ? irq_thread_fn+0x60/0x60 kernel:  kthread+0x11e/0x140 kernel:  ? irq_thread_check_affinity+0xf0/0xf0 kernel:  ? set_kthread_struct+0x50/0x50 kernel:  ret_from_fork+0x22/0x30 kernel:  \u003c/TASK\u003e kernel: ================================================================================  This commit fixes the bug. The bug has no disadvantage for the non- control/notify AV/C transactions since the flag has an effect for AV/C response with INTERIM (0x0f) status which is not used for the transactions in AV/C general specification.","modified":"2026-09-01T20:04:54.289949683Z","published":"2025-02-26T07:01:01.727Z","upstream":["CVE-2022-49248"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2022-49248"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.17.3-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49248.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.17.3-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49248.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.17.3-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49248.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:N/I:N/A:H"}]}