CVE-2021-3655: Input Validation
First published: Tue Jul 20 2021(Updated: )
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.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | <5.14 | |
| Linux Kernel | =5.14 | |
| Red Hat Enterprise Linux | =8.0 | |
| Debian GNU/Linux | =9.0 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.128-1 6.12.12-1 6.12.15-1 | |
| Android |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=1984024
- https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html
- https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html
- https://launchpad.net/bugs/cve/CVE-2021-3655
- https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=f9beb95e6a2669fa35e34a6ff52808b181efa20f
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1985143
- https://android.googlesource.com/kernel/common/+/d4dbef7046e2
- https://android.googlesource.com/kernel/common/+/6ef81a5c0e22
- https://android.googlesource.com/kernel/common/+/ffca46766850
- https://android.googlesource.com/kernel/common/+/ccb79116c372
- https://source.android.com/docs/security/bulletin/2022-03-01 (Advisory)
- https://security-tracker.debian.org/tracker/CVE-2021-3655
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3655
- https://nvd.nist.gov/vuln/detail/CVE-2021-3655
- https://ubuntu.com/security/CVE-2021-3655
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.
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