CVE-2021-3501
First published: Tue Apr 13 2021(Updated: )
A flaw was found in the Linux kernel in versions before 5.12. The value of internal.ndata, in the KVM API, is mapped to an array index, which can be updated by a user process at anytime which could lead to an out-of-bounds write. The highest threat from this vulnerability is to data integrity and system availability.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel-rt | <0:4.18.0-305.3.1.rt7.75.el8_4 | 0:4.18.0-305.3.1.rt7.75.el8_4 |
| redhat/kernel | <0:4.18.0-305.3.1.el8_4 | 0:4.18.0-305.3.1.el8_4 |
| redhat/redhat-virtualization-host | <0:4.4.6-20210615.0.el8_4 | 0:4.4.6-20210615.0.el8_4 |
| redhat/kernel | <5.12 | 5.12 |
| 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 | |
| Linux Kernel | <5.12 | |
| Red Hat Enterprise Linux | =8.0 | |
| redhat enterprise Linux for real time | =8 | |
| redhat enterprise Linux for real time for nfv | =8 | |
| redhat enterprise Linux for real time for nfv tus | =8.4 | |
| redhat enterprise Linux for real time tus | =8.4 | |
| Fedora | =33 | |
| All of | ||
| Any of | ||
| Red Hat Enterprise Virtualization | =4.0 | |
| redhat virtualization host | =4.0 | |
| Red Hat Enterprise Linux | =8.0 | |
| netapp cloud backup | ||
| netapp solidfire baseboard management controller firmware | ||
| All of | ||
| netapp h300s firmware | ||
| netapp h300s | ||
| All of | ||
| NetApp H500S Firmware | ||
| netapp h500s | ||
| All of | ||
| netapp h700s firmware | ||
| netapp h700s | ||
| All of | ||
| netapp h300e firmware | ||
| netapp h300e | ||
| All of | ||
| netapp h500e firmware | ||
| netapp h500e | ||
| All of | ||
| netapp h700e firmware | ||
| netapp h700e | ||
| All of | ||
| netapp h410s firmware | ||
| netapp h410s | ||
| All of | ||
| netapp h410c firmware | ||
| netapp h410c | ||
| Red Hat Enterprise Virtualization | =4.0 | |
| redhat virtualization host | =4.0 | |
| Red Hat Enterprise Linux | =8.0 | |
| netapp h300s firmware | ||
| netapp h300s | ||
| NetApp H500S Firmware | ||
| netapp h500s | ||
| netapp h700s firmware | ||
| netapp h700s | ||
| netapp h300e firmware | ||
| netapp h300e | ||
| netapp h500e firmware | ||
| netapp h500e | ||
| netapp h700e firmware | ||
| netapp h700e | ||
| netapp h410s firmware | ||
| netapp h410s | ||
| netapp h410c firmware | ||
| netapp h410c |
Remedy
Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update as soon as possible.
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2021-3501 https://nvd.nist.gov/vuln/detail/CVE-2021-3501 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04c4f2ee3f68c9a4bf1653d15f1a9a435ae33f7a
- https://bugzilla.redhat.com/show_bug.cgi?id=1950136
- https://access.redhat.com/errata/RHSA-2021:2169
- https://access.redhat.com/errata/RHSA-2021:2165
- https://access.redhat.com/errata/RHSA-2021:2168
- https://access.redhat.com/errata/RHSA-2021:2522
- https://access.redhat.com/security/cve/cve-2021-3501
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04c4f2ee3f68c9a4bf1653d15f1a9a435ae33f7a
- https://security.netapp.com/advisory/ntap-20210618-0008/
- https://launchpad.net/bugs/cve/CVE-2021-3501
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1954240
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1954241
- https://git.kernel.org/linus/04c4f2ee3f68c9a4bf1653d15f1a9a435ae33f7a
- https://security-tracker.debian.org/tracker/CVE-2021-3501
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3501
- https://nvd.nist.gov/vuln/detail/CVE-2021-3501
- https://ubuntu.com/security/CVE-2021-3501
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is the severity of CVE-2021-3501?
CVE-2021-3501 has a high severity rating due to its impact on data integrity and potential out-of-bounds write issues in the Linux kernel.
How do I fix CVE-2021-3501?
To resolve CVE-2021-3501, upgrade the Linux kernel to version 5.12 or later or apply the relevant patches provided by your distribution.
What versions of Linux are affected by CVE-2021-3501?
CVE-2021-3501 affects Linux kernel versions before 5.12, including specific Red Hat and Debian kernels.
What systems are primarily impacted by CVE-2021-3501?
Systems running vulnerable versions of the Linux kernel, such as earlier versions of Red Hat Enterprise Linux and Debian, are primarily impacted by CVE-2021-3501.
Can CVE-2021-3501 be exploited remotely?
CVE-2021-3501 can potentially be exploited by local users with sufficient privileges to manipulate memory and cause an out-of-bounds write.
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