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Known exploited vulnerability

CVE-2021-1048

highCVSS 3.1 7.8In CISA KEVEPSS 1.1%Published · n/a

The short answer

CVE-2021-1048 affects n/a Android and is rated high (CVSS 7.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2022-05-23: attackers are using it, so patch it first. The vendor has linked a patch.

What it is

In ep_loop_check_proc of eventpoll.c, there is a possible way to corrupt memory due to a 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-204573007References: Upstream kernel

Weakness: CWE-416.

Severity

7.8 high

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploited (CISA KEV)

Yes, since May 23, 2022

Federal due date Jun 13, 2022

EPSS, next 30 days

1.1%

Higher than 65% of scored CVEs

How it can be exploited

Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

What CISA says to do

Apply updates per vendor instructions.

Affected products

Android. NVD's record lists the exact affected versions.

References

Questions

Is CVE-2021-1048 being exploited?

Yes. CISA added CVE-2021-1048 to its Known Exploited Vulnerabilities catalog on 2022-05-23, with a federal remediation due date of 2022-06-13.

How do I fix CVE-2021-1048?

CISA's required action: Apply updates per vendor instructions.

From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.

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