CVE-2021-3753
Public on 2021-09-08
Modified on 2021-10-04
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 v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 1 | kernel | 2021-10-05 | ALAS-2021-1539 | Fixed |
| Amazon Linux 2 - Core | kernel | 2021-09-15 | ALAS2-2021-1704 | Fixed |
| Amazon Linux 2 - Kernel-5.10 Extra | kernel | 2022-01-28 | ALAS2KERNEL-5.10-2022-005 | Fixed |
| Amazon Linux 2 - Kernel-5.4 Extra | kernel | 2022-01-28 | ALAS2KERNEL-5.4-2022-007 | Fixed |
| Amazon Linux 2 - Kernel-5.4 Extra | kernel | 2022-01-28 | ALAS2KERNEL-5.4-2022-008 | Fixed |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 4.7 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N |