CVE-2021-39802 — Incorrect Authorization in Google Android

CWE-863 — Incorrect AuthorizationCWE-269 — Improper Privilege Management6 documents5 sources
Severity
7.8HIGHNVD
EPSS
0.0%
top 98.83%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Debian LinuxGoogle Android
Timeline
PublishedApr 12
Latest updateApr 13

Description

In change_pte_range of mprotect.c , there is a possible way to make a shared mmap writable due to a permissions bypass. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-213339151References: Upstream kernel

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages2 packages

▶debiandebian/linux

Patches

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

🔴Vulnerability Details

3
GHSA
GHSA-pw5p-gx3j-x3xv: In change_pte_range of mprotect↗2022-04-13
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OSV
CVE-2021-39802: In change_pte_range of mprotect↗2022-04-12
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OSV
CVE-2021-39802: In change_pte_range of mprotect↗2022-04-01
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📋Vendor Advisories

2
Android
CVE-2021-39802: Memory Management↗2022-04-01
▶
Debian
CVE-2021-39802: linux - In change_pte_range of mprotect.c , there is a possible way to make a shared mma...↗2021
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CVE-2021-39802 — Incorrect Authorization in Google | cvebase