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CVE-2022-49248

5.5 · MEDIUM

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 00…

Published Feb 26, 2025CWE-908EPSS 0.27%

Overview

CVE-2022-49248 is a medium-severity vulnerability. It was published on February 26, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical 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:

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/39d2c4a33dc1b4402cec68a3c8f82c6588b6edceRefgit.kernel.org/stable/c/60e5d391805d70458a01998de00d0c28cba40bf3Refgit.kernel.org/stable/c/7025f40690a235a118c87674cfb93072694aa66dRefgit.kernel.org/stable/c/7e6f5786621df060f8296f074efd275eaf20361aRefgit.kernel.org/stable/c/99582e4b19f367fa95bdd150b3034d7ce8113342Refgit.kernel.org/stable/c/b2b65c9013dc28836d82e25d0f0c94d794a14abaRefgit.kernel.org/stable/c/bf0cd60b7e33cf221fbe1114e4acb2c828b0af0dRefgit.kernel.org/stable/c/d07e4bbaff6fbba6f70c04b092ea7d9afcdf392eRefgit.kernel.org/stable/c/eab74c41612083bd627b60da650e19234e4f1051

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49248?

CVE-2022-49248 is a medium-severity vulnerability. It was published on February 26, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-49248?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-49248?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2022-49248?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49248 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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