CVE-2021-3753: Race Condition
First published: Tue Aug 31 2021(Updated: )
A race problem was seen in the vt_k_ioctl in drivers/tty/vt/vt_ioctl.c in the Linux kernel, which may cause an out of bounds read in vt as the write access to vc_mode is not protected by lock-in vt_ioctl (KDSETMDE). The highest threat from this vulnerability is to data confidentiality.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/Linux kernel | <5.15 | 5.15 |
| Linux Kernel | <5.15 | |
| Red Hat Enterprise Linux | =7.0 | |
| Red Hat Enterprise Linux | =8.0 | |
| NetApp Active IQ Unified Manager for VMware vSphere | ||
| NetApp Management Services for Element Software | ||
| NetApp SolidFire & HCI Management Node | ||
| NetApp SolidFire & HCI Storage Node | ||
| NetApp HCI Bootstrap OS | ||
| NetApp HCI Compute Node | ||
| NetApp H300S Firmware | ||
| NetApp H300S Firmware | ||
| NetApp H500e Firmware | ||
| NetApp H500e Firmware | ||
| NetApp H700S | ||
| NetApp H700S | ||
| NetApp H410S | ||
| NetApp H410S Firmware | ||
| NetApp H410C | ||
| NetApp H410C Firmware | ||
| All of | ||
| NetApp HCI Bootstrap OS | ||
| NetApp HCI Compute Node | ||
| All of | ||
| NetApp H300S Firmware | ||
| NetApp H300S Firmware | ||
| All of | ||
| NetApp H500e Firmware | ||
| NetApp H500e Firmware | ||
| All of | ||
| NetApp H700S | ||
| NetApp H700S | ||
| All of | ||
| NetApp H410S | ||
| NetApp H410S Firmware | ||
| All of | ||
| NetApp H410C | ||
| NetApp H410C Firmware | ||
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.128-1 6.12.20-1 6.12.21-1 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=1999589
- https://github.com/torvalds/linux/commit/2287a51ba822384834dafc1c798453375d1107c7
- https://www.openwall.com/lists/oss-security/2021/09/01/4
- https://security.netapp.com/advisory/ntap-20221028-0003/
- https://launchpad.net/bugs/cve/CVE-2021-3753
- https://access.redhat.com/errata/RHSA-2024:2950
- https://access.redhat.com/errata/RHSA-2024:3138
- https://git.kernel.org/linus/2287a51ba822384834dafc1c798453375d1107c7
- https://security-tracker.debian.org/tracker/CVE-2021-3753
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3753
- https://nvd.nist.gov/vuln/detail/CVE-2021-3753
- https://ubuntu.com/security/CVE-2021-3753
Frequently Asked Questions
What is the severity of CVE-2021-3753?
The severity of CVE-2021-3753 is considered high due to its impact on data confidentiality.
How do I fix CVE-2021-3753?
To fix CVE-2021-3753, update your Linux kernel to version 5.15 or apply the recommended patches for versions 5.10.223-1, 5.10.226-1, 6.1.123-1, 6.1.119-1, 6.12.11-1, or 6.12.12-1.
What systems are affected by CVE-2021-3753?
CVE-2021-3753 affects various versions of the Linux kernel, including specific Red Hat Enterprise Linux and Debian packages.
What type of vulnerability is CVE-2021-3753?
CVE-2021-3753 is a race condition vulnerability that can lead to out of bounds reading in the Linux kernel.
What are the potential consequences of CVE-2021-3753?
The consequences of CVE-2021-3753 include potential unauthorized access to sensitive data due to compromised data confidentiality.
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