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CVE-2022-50549

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: dm thin: Fix ABBA deadlock between shrink_slab and dm_pool_abort_metadata Following concurrent processes: P1(drop ca…

Published Oct 7, 2025CWE-667EPSS 0.15%

Overview

CVE-2022-50549 is a medium-severity vulnerability. It was published on October 7, 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:

dm thin: Fix ABBA deadlock between shrink_slab and dm_pool_abort_metadata

Following concurrent processes:

P1(drop cache) P2(kworker)

drop_caches_sysctl_handler

drop_slab

shrink_slab

down_read(&shrinker_rwsem) - LOCK A

do_shrink_slab

super_cache_scan

prune_icache_sb

dispose_list

evict

ext4_evict_inode

ext4_clear_inode

ext4_discard_preallocations

ext4_mb_load_buddy_gfp

ext4_mb_init_cache

ext4_read_block_bitmap_nowait

ext4_read_bh_nowait

submit_bh

dm_submit_bio

do_worker

process_deferred_bios

commit

metadata_operation_failed

dm_pool_abort_metadata

down_write(&pmd->root_lock) - LOCK B

__destroy_persistent_data_objects

dm_block_manager_destroy

dm_bufio_client_destroy

unregister_shrinker

dow

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/200aa33b5d781e7c0fa6c0c7db9dbcc3f574ce8fRefgit.kernel.org/stable/c/2d891cc5a1706b6908bceb56af7176a463ee6d62Refgit.kernel.org/stable/c/7e37578069737b04955c71dd85db8a3bc2709effRefgit.kernel.org/stable/c/8111964f1b8524c4bb56b02cd9c7a37725ea21fdRefgit.kernel.org/stable/c/cdf7a39bcc427febbfe3c3b9fe829825ead96c27Refgit.kernel.org/stable/c/f8c26c33fef588ee54852cffa7cbb9f9d9869405

How CyberStrike helps

Frequently asked questions

What is CVE-2022-50549?

CVE-2022-50549 is a medium-severity vulnerability. It was published on October 7, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-50549?

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-2022-50549?

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-2022-50549?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-50549 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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