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CVE-2022-49007

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix NULL pointer dereference in nilfs_palloc_commit_free_entry() Syzbot reported a null-ptr-deref bug: NILFS (loop0):…

Published Oct 21, 2024CWE-476EPSS 0.25%

Overview

CVE-2022-49007 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:

nilfs2: fix NULL pointer dereference in nilfs_palloc_commit_free_entry()

Syzbot reported a null-ptr-deref bug:

NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP

frequency < 30 seconds

general protection fault, probably for non-canonical address

0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN

KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]

CPU: 1 PID: 3603 Comm: segctord Not tainted

6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0

Hardware name: Google Compute Engine/Google Compute Engine, BIOS Google

10/11/2022

RIP: 0010:nilfs_palloc_commit_free_entry+0xe5/0x6b0

fs/nilfs2/alloc.c:608

Code: 00 00 00 00 fc ff df 80 3c 02 00 0f 85 cd 05 00 00 48 b8 00 00 00

00 00 fc ff df 4c 8b 73 08 49 8d 7e 10 48 89 fa 48 c1 ea 03 <80> 3c 02

00 0f 85 26 05 00 00 49 8b 46 10 be a6 00 00 00 48 c7 c7

RSP: 0018:ffffc90003dff830 EFLAGS: 00010212

RAX: dffffc0000000000 RBX: ffff88802594

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/165c7a3b27a3857ebf57f626b9f38b48b6792e68Refgit.kernel.org/stable/c/2f2c59506ae39496588ceb8b88bdbdbaed895d63Refgit.kernel.org/stable/c/33021419fd81efd3d729a7f19341ba4b98fe66ceRefgit.kernel.org/stable/c/381b84f60e549ea98cec4666c6c728b1b3318756Refgit.kernel.org/stable/c/9a130b72e6bd1fb07fc3cde839dc6fb53da76f07Refgit.kernel.org/stable/c/bc3fd3293887b4cf84a9109700faeb82de533c89Refgit.kernel.org/stable/c/e858917ab785afe83c14f5ac141301216ccda847Refgit.kernel.org/stable/c/f0a0ccda18d6fd826d7c7e7ad48a6ed61c20f8b4

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49007?

CVE-2022-49007 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-2022-49007?

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-2022-49007?

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-2022-49007?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49007 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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