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CVE-2022-49328

8.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: mt76: fix use-after-free by removing a non-RCU wcid pointer Fixes an issue caught by KASAN about use-after-free in mt76_txq_sch…

Published Feb 26, 2025CWE-416EPSS 0.42%

Overview

CVE-2022-49328 is a high-severity vulnerability. It was published on February 26, 2025 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

mt76: fix use-after-free by removing a non-RCU wcid pointer

Fixes an issue caught by KASAN about use-after-free in mt76_txq_schedule

by protecting mtxq->wcid with rcu_lock between mt76_txq_schedule and

sta_info_[alloc, free].

[18853.876689] ==================================================================

[18853.876751] BUG: KASAN: use-after-free in mt76_txq_schedule+0x204/0xaf8 [mt76]

[18853.876773] Read of size 8 at addr ffffffaf989a2138 by task mt76-tx phy0/883

[18853.876786]

[18853.876810] CPU: 5 PID: 883 Comm: mt76-tx phy0 Not tainted 5.10.100-fix-510-56778d365941-kasan #5 0b01fbbcf41a530f52043508fec2e31a4215

[18853.876840] Call trace:

[18853.876861] dump_backtrace+0x0/0x3ec

[18853.876878] show_stack+0x20/0x2c

[18853.876899] dump_stack+0x11c/0x1ac

[18853.876918] print_address_description+0x74/0x514

[18853.876934] kasan_report+0x134/0x174

[18853.876948] __asan_report_load8_noabort+0x44/0x50

[18853.876976

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/4448327b41738dbfcda680eb4935ff835568f468Refgit.kernel.org/stable/c/51fb1278aa57ae0fc54adaa786e1965362bed4fbRefgit.kernel.org/stable/c/d5f77f1dbb59feae81f88e44551e8e1d8a802d9aRefgit.kernel.org/stable/c/e55bcdd0bf34a8b10d45ce80ebb3164c5292a17d

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49328?

CVE-2022-49328 is a high-severity vulnerability. It was published on February 26, 2025 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2022-49328?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2022-49328?

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-2022-49328?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49328 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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