CVE-2021-3655: Input Validation
A vulnerability was found in the Linux kernel in versions prior to v5.14-rc1. Missing size validations on inbound SCTP packets may allow the kernel to read uninitialized memory.
Other sources
A vulnerability was found in the Linux kernel. Missing size validations on inbound SCTP packets may allow the kernel to read uninitialized memory.
Reference and upstream patch: https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=f9beb95e6a2669fa35e34a6ff52808b181efa20f
— Red Hat
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 5.10.223-1Fixed in 5.10.234-1Fixed in 6.1.129-1Fixed in 6.1.135-1Fixed in 6.12.25-1Fixed in 6.12.27-1 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in v5.14-rc1
Event History
Frequently Asked Questions
What is the severity of CVE-2021-3655?
CVE-2021-3655 has been classified as a medium severity vulnerability.
How do I fix CVE-2021-3655?
To fix CVE-2021-3655, update the Linux kernel to version 5.14 or later.
Which versions of the Linux kernel are affected by CVE-2021-3655?
CVE-2021-3655 affects Linux kernel versions prior to v5.14-rc1.
What systems are impacted by CVE-2021-3655?
CVE-2021-3655 impacts various systems including Google Android, Red Hat Enterprise Linux 8.0, and Debian 9.0.
What type of vulnerability is CVE-2021-3655?
CVE-2021-3655 is a memory vulnerability caused by missing size validations on inbound SCTP packets.