CVE-2020-35508

Name: CVE-2020-35508
Creator: NVD / NIST
Published: 2021-03-26T17:15:12.203+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.5/10EPSS 0.22%

Last modified Jun 17, 2026

CVE-2020-35508 is a medium-severity vulnerability rated 4.5/10 on the CVSS scale. A flaw possibility of race condition and incorrect initialization of the process id was found in the Linux kernel child/parent process identification handling while filtering signal handlers. A local attacker is able to abuse this flaw to bypass checks to send any signal to a privileged process.. EPSS estimates a 0.22% chance of exploitation in the next 30 days.

Description

A flaw possibility of race condition and incorrect initialization of the process id was found in the Linux kernel child/parent process identification handling while filtering signal handlers. A local attacker is able to abuse this flaw to bypass checks to send any signal to a privileged process.

Metrics

CVSS 3.1

4.5/10

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

EPSS Probability

0.22%

13.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	< 5.12
Linux	Linux Kernel	5.12
Redhat	Enterprise Linux	8.0
Netapp	A700s Firmware	All versions
Netapp	Brocade Fabric Operating System Firmware	All versions
Netapp	Fas8300 Firmware	All versions
Netapp	Fas8700 Firmware	All versions
Netapp	Aff A400 Firmware	All versions
Netapp	H300s Firmware	All versions
Netapp	H500s Firmware	All versions
Netapp	H700s Firmware	All versions
Netapp	H300e Firmware	All versions
Netapp	H500e Firmware	All versions
Netapp	H700e Firmware	All versions
Netapp	H410s Firmware	All versions
Netapp	H410c Firmware	All versions
Netapp	H610c Firmware	All versions
Netapp	H610s Firmware	All versions
Netapp	H615c Firmware	All versions

References

https://bugzilla.redhat.com/show_bug.cgi?id=1902724Issue Tracking, Patch, Third Party Advisory
https://github.com/torvalds/linux/commit/b4e00444cab4c3f3fec876dc0cccc8cbb0d1a948Patch, Third Party Advisory
https://security.netapp.com/advisory/ntap-20210513-0006/Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1902724Issue Tracking, Patch, Third Party Advisory
https://github.com/torvalds/linux/commit/b4e00444cab4c3f3fec876dc0cccc8cbb0d1a948Patch, Third Party Advisory
https://security.netapp.com/advisory/ntap-20210513-0006/Third Party Advisory

Timeline

Published: Mar 26, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-35508?

How severe is CVE-2020-35508?

CVE-2020-35508 has a CVSS score of 4.5/10 (MEDIUM severity). The EPSS model estimates a 0.22% probability of exploitation in the next 30 days.

How do I fix CVE-2020-35508?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-35508?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST