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CVE-2022-49033

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: btrfs: qgroup: fix sleep from invalid context bug in btrfs_qgroup_inherit() Syzkaller reported BUG as follows: BUG: sleeping…

Published Oct 21, 2024EPSS 0.25%

Overview

CVE-2022-49033 is a medium-severity vulnerability. It was published on October 21, 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:

btrfs: qgroup: fix sleep from invalid context bug in btrfs_qgroup_inherit()

Syzkaller reported BUG as follows:

BUG: sleeping function called from invalid context at

include/linux/sched/mm.h:274

Call Trace:

<TASK>

dump_stack_lvl+0xcd/0x134

__might_resched.cold+0x222/0x26b

kmem_cache_alloc+0x2e7/0x3c0

update_qgroup_limit_item+0xe1/0x390

btrfs_qgroup_inherit+0x147b/0x1ee0

create_subvol+0x4eb/0x1710

btrfs_mksubvol+0xfe5/0x13f0

__btrfs_ioctl_snap_create+0x2b0/0x430

btrfs_ioctl_snap_create_v2+0x25a/0x520

btrfs_ioctl+0x2a1c/0x5ce0

__x64_sys_ioctl+0x193/0x200

do_syscall_64+0x35/0x80

Fix this by calling qgroup_dirty() on @dstqgroup, and update limit item in

btrfs_run_qgroups() later outside of the spinlock context.

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/01d7c41eac9129fba80d8aed0060caab4a7dbe09Refgit.kernel.org/stable/c/044da1a371a0da579e805e89c96865f62d8f6f69Refgit.kernel.org/stable/c/3c98e91be6aea4c7acf09da6eb0c107ea9186bb5Refgit.kernel.org/stable/c/588ae4fdd8b11788a797776b10d6c44ae12bc133Refgit.kernel.org/stable/c/89840b12c8fad7200eb6478525c13261512c01beRefgit.kernel.org/stable/c/8eb912af525042a7365295eb62f6d5270c2a6462Refgit.kernel.org/stable/c/f4b930a1602b05e77fee31f9616599b25e910a86Refgit.kernel.org/stable/c/f7e942b5bb35d8e3af54053d19a6bf04143a3955

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49033?

CVE-2022-49033 is a medium-severity vulnerability. It was published on October 21, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-49033?

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-2022-49033?

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-2022-49033?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49033 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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