CVE-2022-20238 — Improper Restriction of Operations within the Bounds of a Memory Buffer in Google Android

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer4 documents4 sources
Severity
9.8CRITICALNVD
EPSS
0.2%
top 62.13%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Google Android
Timeline
PublishedJul 13
Latest updateJul 14

Description

'remap_pfn_range' here may map out of size kernel memory (for example, may map the kernel area), and because the 'vma->vm_page_prot' can also be controlled by userspace, so userspace may map the kernel area to be writable, which is easy to be exploitedProduct: AndroidVersions: Android SoCAndroid ID: A-233154555

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

Affected Packages1 packages

Patches

Patch: source.android.com ↗Patch: source.android.com ↗

🔴Vulnerability Details

2
GHSA
GHSA-94vg-wrxf-f4p9: 'remap_pfn_range' here may map out of size kernel memory (for example, may map the kernel area), and because the 'vma->vm_page_prot' can also be contr↗2022-07-14
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OSV
CVE-2022-20238: 'remap_pfn_range' here may map out of size kernel memory (for example, may map the kernel area), and because the 'vma->vm_page_prot' can also be contr↗2022-07-01
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📋Vendor Advisories

1
Android
CVE-2022-20238: kernel↗2022-07-01
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