CVE-2022-49248

MEDIUM EPSS 15.8%
Published Feb 26, 20251y ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Feb 26, 2025 1y ago
Last Modified Jun 17, 2026 2w ago

Description

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: <IRQ> 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: </IRQ> kernel: <TASK> 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: </TASK> 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.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
15.8% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-908

Affected Products 8

VendorProductVersionRange
linuxlinux_kernel*≥3.16  –  <4.9.311
linuxlinux_kernel*≥4.10  –  <4.14.276
linuxlinux_kernel*≥4.15  –  <4.19.238
linuxlinux_kernel*≥4.20  –  <5.4.189
linuxlinux_kernel*≥5.5  –  <5.10.110
linuxlinux_kernel*≥5.11  –  <5.15.33
linuxlinux_kernel*≥5.16  –  <5.16.19
linuxlinux_kernel*≥5.17  –  <5.17.2

References 9

  • git.kernel.org https://git.kernel.org/stable/c/39d2c4a33dc1b4402cec68a3c8f82c6588b6edce
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/60e5d391805d70458a01998de00d0c28cba40bf3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7025f40690a235a118c87674cfb93072694aa66d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7e6f5786621df060f8296f074efd275eaf20361a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/99582e4b19f367fa95bdd150b3034d7ce8113342
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b2b65c9013dc28836d82e25d0f0c94d794a14aba
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bf0cd60b7e33cf221fbe1114e4acb2c828b0af0d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d07e4bbaff6fbba6f70c04b092ea7d9afcdf392e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/eab74c41612083bd627b60da650e19234e4f1051
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/39d2c4a33dc1b4402cec68a3c8f82c6588b6edce
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/60e5d391805d70458a01998de00d0c28cba40bf3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7025f40690a235a118c87674cfb93072694aa66d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7e6f5786621df060f8296f074efd275eaf20361a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/99582e4b19f367fa95bdd150b3034d7ce8113342
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b2b65c9013dc28836d82e25d0f0c94d794a14aba
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bf0cd60b7e33cf221fbe1114e4acb2c828b0af0d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d07e4bbaff6fbba6f70c04b092ea7d9afcdf392e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/eab74c41612083bd627b60da650e19234e4f1051
    Patch