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CVE-2022-49297

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: nbd: fix io hung while disconnecting device In our tests, "qemu-nbd" triggers a io hung: INFO: task qemu-nbd:11445 blocked for…

Published Feb 26, 2025EPSS 0.28%

Overview

CVE-2022-49297 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:

nbd: fix io hung while disconnecting device

In our tests, "qemu-nbd" triggers a io hung:

INFO: task qemu-nbd:11445 blocked for more than 368 seconds.

Not tainted 5.18.0-rc3-next-20220422-00003-g2176915513ca #884

"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.

task:qemu-nbd state:D stack: 0 pid:11445 ppid: 1 flags:0x00000000

Call Trace:

<TASK>

__schedule+0x480/0x1050

? _raw_spin_lock_irqsave+0x3e/0xb0

schedule+0x9c/0x1b0

blk_mq_freeze_queue_wait+0x9d/0xf0

? ipi_rseq+0x70/0x70

blk_mq_freeze_queue+0x2b/0x40

nbd_add_socket+0x6b/0x270 [nbd]

nbd_ioctl+0x383/0x510 [nbd]

blkdev_ioctl+0x18e/0x3e0

__x64_sys_ioctl+0xac/0x120

do_syscall_64+0x35/0x80

entry_SYSCALL_64_after_hwframe+0x44/0xae

RIP: 0033:0x7fd8ff706577

RSP: 002b:00007fd8fcdfebf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010

RAX: ffffffffffffffda RBX: 0000000040000000 RCX: 00007fd8ff706577

RDX: 000000000000000d

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/09dadb5985023e27d4740ebd17e6fea4640110e5Refgit.kernel.org/stable/c/141318e62db87105b0103fccc59c9c5940da248dRefgit.kernel.org/stable/c/54b06dc2a206b4d67349bb56b92d4bd32700b7b1Refgit.kernel.org/stable/c/62d227f67a8c25d5e16f40e5290607f9306d2188Refgit.kernel.org/stable/c/67e403136a0e1a55fef6a05f103a3979a39ad3fdRefgit.kernel.org/stable/c/69893d6d7f5c10d8306c1b5fc64b71efc91aa6cdRefgit.kernel.org/stable/c/c4ba982bd5084fa659ef518aaf159e4dab02ecdaRefgit.kernel.org/stable/c/f72df77600a43e59b3189e53b47f8685739867d3

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49297?

CVE-2022-49297 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-2022-49297?

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-2022-49297?

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-2022-49297?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49297 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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