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CVE-2022-49402

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: ftrace: Clean up hash direct_functions on register failures We see the following GPF when register_ftrace_direct fails: [ ] ge…

Published Feb 26, 2025EPSS 0.28%

Overview

CVE-2022-49402 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:

ftrace: Clean up hash direct_functions on register failures

We see the following GPF when register_ftrace_direct fails:

[ ] general protection fault, probably for non-canonical address \

0x200000000000010: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC PTI

[...]

[ ] RIP: 0010:ftrace_find_rec_direct+0x53/0x70

[ ] Code: 48 c1 e0 03 48 03 42 08 48 8b 10 31 c0 48 85 d2 74 [...]

[ ] RSP: 0018:ffffc9000138bc10 EFLAGS: 00010206

[ ] RAX: 0000000000000000 RBX: ffffffff813e0df0 RCX: 000000000000003b

[ ] RDX: 0200000000000000 RSI: 000000000000000c RDI: ffffffff813e0df0

[ ] RBP: ffffffffa00a3000 R08: ffffffff81180ce0 R09: 0000000000000001

[ ] R10: ffffc9000138bc18 R11: 0000000000000001 R12: ffffffff813e0df0

[ ] R13: ffffffff813e0df0 R14: ffff888171b56400 R15: 0000000000000000

[ ] FS: 00007fa9420c7780(0000) GS:ffff888ff6a00000(0000) knlGS:000000000

[ ] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

[ ] CR2: 000000000770d000 CR3: 00

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/7d54c15cb89a29a5f59e5ffc9ee62e6591769ef1Refgit.kernel.org/stable/c/805e87af946d8d2954171361e64d143ff37a441bRefgit.kernel.org/stable/c/82c888e51c2176a06f8b4541cf748ee81aac6e7eRefgit.kernel.org/stable/c/a0392833a178cf109a57c2a9d4d531bdfc6cd98fRefgit.kernel.org/stable/c/cae2978d6907ef2c08b9b15f704e783f7c284713

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49402?

CVE-2022-49402 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-2022-49402?

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-2022-49402?

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-2022-49402?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49402 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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