What is CVE-2020-12826?

CVE-2020-12826 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.3 out of 10, classified as a Integer Overflow flaw (CWE-190). CVE-2020-12826 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2020-12826?

CVE-2020-12826 has a CVSS score of 5.3 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.

Is there a patch available for CVE-2020-12826?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2020-12826 patch availability.

Is CVE-2020-12826 actively exploited?

CVE-2020-12826 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Integer Overflow (CWE-190)?

The product performs a calculation that can produce an integer overflow, leading to unexpected values. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/190.html

CVE-2020-12826

Medium

A signal access-control issue was discovered in the Linux kernel before 5.6.5, aka CID-7395ea4e65c2. Because exec_id in include/linux/sched.h is only 32 bits, an integer overflow can interfere with a do_notify_parent protection mechanism. A child process can send an arbitrary signal to a parent process in a different security domain. Exploitation limitations include the amount of elapsed time before an integer overflow occurs, and the lack of scenarios where signals to a parent process present a substantial operational threat.

Package Linux Kernel

Published 2020-05-12

Last modified 2024-11-21

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

5.3

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Vector string

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

Weakness type

CWE-190

CVE-2020-12826 is a Integer Overflow vulnerability

What is Integer Overflow?

The product performs a calculation that can produce an integer overflow, leading to unexpected values. Learn more on MITRE CWE

References

11 total

Lists
https://lists.openwall.net/linux-kernel/2020/03/24/1803

Exploit Mailing List Patch Third Party Advisory
Openwall
https://www.openwall.com/lists/kernel-hardening/2020/03/25/1

Exploit Mailing List Patch Third Party Advisory
Red Hat
https://bugzilla.redhat.com/show_bug.cgi?id=1822077

Issue Tracking Patch Third Party Advisory
GitHub
https://github.com/torvalds/linux/commit/7395ea4e65c2a00d23185a3f63ad315756ba9cef

Patch Third Party Advisory
Kernel.org
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.5

Release Notes Third Party Advisory

Showing 5 of 11 references View all on NVD

Details

CVE ID CVE-2020-12826

Severity Medium

CVSS score 5.3 / 10

CVSS version 3.1

Published 2020-05-12

Modified 2024-11-21

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2020-12826?

CVE-2020-12826 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.3 out of 10 , classified as an Integer Overflow flaw (CWE-190) . CVE-2020-12826 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2020-12826?

CVE-2020-12826 has a CVSS score of 5.3 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
Is there a patch available for CVE-2020-12826?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2020-12826 patch availability.
Is CVE-2020-12826 actively exploited?

No. CVE-2020-12826 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.