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Known exploited vulnerability

CVE-2021-39793

highCVSS 3.1 7.8In CISA KEVEPSS 0.69%Published · n/a

The short answer

CVE-2021-39793 affects n/a Android and is rated high (CVSS 7.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2022-04-11: attackers are using it, so patch it first.

What it is

In kbase_jd_user_buf_pin_pages of mali_kbase_mem.c, there is a possible out of bounds write due to a logic error in the code. 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-210470189References: N/A

Weakness: CWE-787.

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 Apr 11, 2022

Federal due date May 2, 2022

EPSS, next 30 days

0.69%

Higher than 53% 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-2021-39793 being exploited?

Yes. CISA added CVE-2021-39793 to its Known Exploited Vulnerabilities catalog on 2022-04-11, with a federal remediation due date of 2022-05-02.

How do I fix CVE-2021-39793?

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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