CVE-2021-38160: Input Validation
First published: Sat Jul 03 2021(Updated: )
** DISPUTED ** In drivers/char/virtio_console.c in the Linux kernel before 5.13.4, data corruption or loss can be triggered by an untrusted device that supplies a buf->len value exceeding the buffer size. NOTE: the vendor indicates that the cited data corruption is not a vulnerability in any existing use case; the length validation was added solely for robustness in the face of anomalous host OS behavior.
Credit: cve@mitre.org cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=2.6.24<4.4.276 | |
| Linux Kernel | >=4.5<4.9.276 | |
| Linux Kernel | >=4.10<4.14.240 | |
| Linux Kernel | >=4.15<4.19.198 | |
| Linux Kernel | >=4.20<5.4.134 | |
| Linux Kernel | >=5.5<5.10.52 | |
| Linux Kernel | >=5.11<5.12.19 | |
| Linux Kernel | >=5.13<5.13.4 | |
| All of | ||
| netapp hci bootstrap os | ||
| netapp hci compute node | ||
| netapp hci management node | ||
| netapp solidfire | ||
| All of | ||
| netapp hci storage node | ||
| NetApp Element Software | ||
| Debian GNU/Linux | =9.0 | |
| Debian GNU/Linux | =10.0 | |
| Red Hat Enterprise Linux | =8.0 | |
| Linux Kernel | <5.13.4 | |
| netapp hci bootstrap os | ||
| netapp hci compute node | ||
| NetApp Element Software | ||
| netapp hci storage node | ||
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.128-1 6.12.12-1 6.12.13-1 |
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2021-38160 https://nvd.nist.gov/vuln/detail/CVE-2021-38160 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d00d8da5869a2608e97cfede094dfc5e11462a46
- https://bugzilla.redhat.com/show_bug.cgi?id=1991722
- https://access.redhat.com/security/cve/cve-2021-38160
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38160
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d00d8da5869a2608e97cfede094dfc5e11462a46
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1991723
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4
- https://github.com/torvalds/linux/commit/d00d8da5869a2608e97cfede094dfc5e11462a46
- https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html
- https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html
- https://security.netapp.com/advisory/ntap-20210902-0010/
- https://www.debian.org/security/2021/dsa-4978
- https://launchpad.net/bugs/cve/CVE-2021-38160
- https://nvd.nist.gov/vuln/detail/CVE-2021-38160
- https://security-tracker.debian.org/tracker/CVE-2021-38160
- https://ubuntu.com/security/CVE-2021-38160
- https://git.kernel.org/linus/d00d8da5869a2608e97cfede094dfc5e11462a46
Frequently Asked Questions
What is the severity of CVE-2021-38160?
The severity of CVE-2021-38160 is disputed, as the vendor claims the data corruption is not an actual vulnerability in the existing software.
How do I fix CVE-2021-38160?
To fix CVE-2021-38160, update to a version of the Linux kernel that is 5.13.4 or newer.
What systems are affected by CVE-2021-38160?
CVE-2021-38160 affects various versions of the Linux kernel prior to 5.13.4, including those in Debian and Red Hat distributions.
What kind of attack is CVE-2021-38160 associated with?
CVE-2021-38160 is associated with potential data corruption or loss caused by untrusted devices supplying excessive buffer lengths.
Is CVE-2021-38160 a critical vulnerability?
CVE-2021-38160 is not classified as critical since the vendor asserts that the issue does not represent a vulnerability under existing conditions.
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