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CVE-2022-50488

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: block, bfq: fix possible uaf for 'bfqq->bic' Our test report a uaf for 'bfqq->bic' in 5.10: ==================================…

Published Oct 4, 2025CWE-416EPSS 0.16%

Overview

CVE-2022-50488 is a high-severity vulnerability. It was published on October 4, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. 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:

block, bfq: fix possible uaf for 'bfqq->bic'

Our test report a uaf for 'bfqq->bic' in 5.10:

==================================================================

BUG: KASAN: use-after-free in bfq_select_queue+0x378/0xa30

CPU: 6 PID: 2318352 Comm: fsstress Kdump: loaded Not tainted 5.10.0-60.18.0.50.h602.kasan.eulerosv2r11.x86_64 #1

Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.1-0-ga5cab58-20220320_160524-szxrtosci10000 04/01/2014

Call Trace:

bfq_select_queue+0x378/0xa30

bfq_dispatch_request+0xe8/0x130

blk_mq_do_dispatch_sched+0x62/0xb0

__blk_mq_sched_dispatch_requests+0x215/0x2a0

blk_mq_sched_dispatch_requests+0x8f/0xd0

__blk_mq_run_hw_queue+0x98/0x180

__blk_mq_delay_run_hw_queue+0x22b/0x240

blk_mq_run_hw_queue+0xe3/0x190

blk_mq_sched_insert_requests+0x107/0x200

blk_mq_flush_plug_list+0x26e/0x3c0

blk_finish_plug+0x63/0x90

__iomap_dio_rw+0x7b5/0x910

iomap_dio_rw+0x36/0x80

ext4_dio_

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/094f3d9314d67691cb21ba091c1b528f6e3c4893Refgit.kernel.org/stable/c/5533742c7cb1bc9b1f0bf401cc397d44a3a9e07aRefgit.kernel.org/stable/c/64dc8c732f5c2b406cc752e6aaa1bd5471159cabRefgit.kernel.org/stable/c/761564d93c8265f65543acf0a576b32d66bfa26aRefgit.kernel.org/stable/c/b22fd72bfebda3956efc4431b60ddfc0a51e03e0

How CyberStrike helps

Frequently asked questions

What is CVE-2022-50488?

CVE-2022-50488 is a high-severity vulnerability. It was published on October 4, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2022-50488?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-50488?

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-2022-50488?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-50488 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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