Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 5.15 |
| Redhat | Enterprise Linux | 7.0 |
| Netapp | Active Iq Unified Manager | - |
| Netapp | Element Software | - |
| Netapp | Hci Management Node | - |
| Netapp | Solidfire | - |
| Netapp | Bootstrap Os | - |
| Netapp | Hci Compute Node | - |
| Netapp | H300S Firmware | - |
| Netapp | H300S | - |
| Netapp | H500S Firmware | - |
| Netapp | H500S | - |
| Netapp | H700S Firmware | - |
| Netapp | H700S | - |
| Netapp | H410S Firmware | - |
| Netapp | H410S | - |
| Netapp | H410C Firmware | - |
| Netapp | H410C | - |
Related Weaknesses (CWE)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1999589Issue TrackingPatchThird Party Advisory
- https://github.com/torvalds/linux/commit/2287a51ba822384834dafc1c798453375d1107cPatchThird Party Advisory
- https://security.netapp.com/advisory/ntap-20221028-0003/Third Party Advisory
- https://www.openwall.com/lists/oss-security/2021/09/01/4ExploitMailing ListPatch
- https://bugzilla.redhat.com/show_bug.cgi?id=1999589Issue TrackingPatchThird Party Advisory
- https://github.com/torvalds/linux/commit/2287a51ba822384834dafc1c798453375d1107cPatchThird Party Advisory
- https://security.netapp.com/advisory/ntap-20221028-0003/Third Party Advisory
- https://www.openwall.com/lists/oss-security/2021/09/01/4ExploitMailing ListPatch
FAQ
What is CVE-2021-3753?
CVE-2021-3753 is a vulnerability with a CVSS score of 4.7 (MEDIUM). 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_io...
How severe is CVE-2021-3753?
CVE-2021-3753 has been rated MEDIUM with a CVSS base score of 4.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-3753?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Redhat Enterprise Linux, Netapp Active Iq Unified Manager, Netapp Element Software, Netapp Hci Management Node.