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CVE-2022-48838

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: Fix use-after-free bug by not setting udc->dev.driver The syzbot fuzzer found a use-after-free bug: BUG: KASAN: u…

Published Jul 16, 2024CWE-416EPSS 0.24%

Overview

CVE-2022-48838 is a medium-severity vulnerability. It was published on July 16, 2024 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:

usb: gadget: Fix use-after-free bug by not setting udc->dev.driver

The syzbot fuzzer found a use-after-free bug:

BUG: KASAN: use-after-free in dev_uevent+0x712/0x780 drivers/base/core.c:2320

Read of size 8 at addr ffff88802b934098 by task udevd/3689

CPU: 2 PID: 3689 Comm: udevd Not tainted 5.17.0-rc4-syzkaller-00229-g4f12b742eb2b #0

Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014

Call Trace:

<TASK>

__dump_stack lib/dump_stack.c:88 [inline]

dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106

print_address_description.constprop.0.cold+0x8d/0x303 mm/kasan/report.c:255

__kasan_report mm/kasan/report.c:442 [inline]

kasan_report.cold+0x83/0xdf mm/kasan/report.c:459

dev_uevent+0x712/0x780 drivers/base/core.c:2320

uevent_show+0x1b8/0x380 drivers/base/core.c:2391

dev_attr_show+0x4b/0x90 drivers/base/core.c:2094

Although the bug manifested in the driver core, the real cause was a

race with t

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/00bdd9bf1ac6d401ad926d3d8df41b9f1399f646Refgit.kernel.org/stable/c/16b1941eac2bd499f065a6739a40ce0011a3d740Refgit.kernel.org/stable/c/2015c23610cd0efadaeca4d3a8d1dae9a45aa35aRefgit.kernel.org/stable/c/2282a6eb6d4e118e294e43dcc421e0e0fe4040b5Refgit.kernel.org/stable/c/27d64436984fb8835a8b7e95993193cc478b162eRefgit.kernel.org/stable/c/4325124dde6726267813c736fee61226f1d38f0bRefgit.kernel.org/stable/c/609a7119bffe3ddd7c93f2fa65be8917e02a0b7eRefgit.kernel.org/stable/c/e2d3a7009e505e120805f449c832942660f3f7f3Refgit.kernel.org/stable/c/00bdd9bf1ac6d401ad926d3d8df41b9f1399f646Refgit.kernel.org/stable/c/16b1941eac2bd499f065a6739a40ce0011a3d740

How CyberStrike helps

Frequently asked questions

What is CVE-2022-48838?

CVE-2022-48838 is a medium-severity vulnerability. It was published on July 16, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-48838?

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-2022-48838?

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-2022-48838?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-48838 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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