CVE-2021-39634 — Use After Free in Google Android

CWE-416 — Use After Free7 documents6 sources
Severity
7.8HIGHNVD
EPSS
0.0%
top 93.18%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Linux KernelDebian LinuxGoogle Android
Timeline
PublishedJan 14
Latest updateMar 14

Description

In fs/eventpoll.c, there is a possible use after free. 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-204450605References: 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 Packages3 packages

▶Debianlinux/linux_kernel< 5.8.14-1+3
▶debiandebian/linux< linux 5.8.14-1 (bookworm)

Patches

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

🔴Vulnerability Details

3
GHSA
GHSA-cjf8-rp6j-hxwr: In fs/eventpoll↗2022-01-15
▶
OSV
CVE-2021-39634: In fs/eventpoll↗2022-01-14
▶
OSV
CVE-2021-39634: In fs/eventpoll↗2022-01-01
▶

📋Vendor Advisories

3
CISA ICS
Siemens SIMATIC↗2024-03-14
▶
Android
CVE-2021-39634: Kernel↗2022-01-01
▶
Debian
CVE-2021-39634: linux - In fs/eventpoll.c, there is a possible use after free. This could lead to local ...↗2021
▶
CVE-2021-39634 — Use After Free in Google Android | cvebase