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CVE-2022-48897

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: arm64/mm: fix incorrect file_map_count for invalid pmd The page table check trigger BUG_ON() unexpectedly when split hugepage:…

Published Aug 21, 2024EPSS 0.21%

Overview

CVE-2022-48897 is a medium-severity vulnerability. It was published on August 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:

arm64/mm: fix incorrect file_map_count for invalid pmd

The page table check trigger BUG_ON() unexpectedly when split hugepage:

------------[ cut here ]------------

kernel BUG at mm/page_table_check.c:119!

Internal error: Oops - BUG: 00000000f2000800 [#1] SMP

Dumping ftrace buffer:

(ftrace buffer empty)

Modules linked in:

CPU: 7 PID: 210 Comm: transhuge-stres Not tainted 6.1.0-rc3+ #748

Hardware name: linux,dummy-virt (DT)

pstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)

pc : page_table_check_set.isra.0+0x398/0x468

lr : page_table_check_set.isra.0+0x1c0/0x468

[...]

Call trace:

page_table_check_set.isra.0+0x398/0x468

__page_table_check_pte_set+0x160/0x1c0

__split_huge_pmd_locked+0x900/0x1648

__split_huge_pmd+0x28c/0x3b8

unmap_page_range+0x428/0x858

unmap_single_vma+0xf4/0x1c8

zap_page_range+0x2b0/0x410

madvise_vma_behavior+0xc44/0xe78

do_madvise+0x280/0x698

__arm64_sys

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/21e5eca0ac9046da9918a919bc92b7b5a78d27e7Refgit.kernel.org/stable/c/74c2f81054510d45b813548cb0a1c4ebf87cdd5f

How CyberStrike helps

Frequently asked questions

What is CVE-2022-48897?

CVE-2022-48897 is a medium-severity vulnerability. It was published on August 21, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-48897?

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-2022-48897?

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-2022-48897?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-48897 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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