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.
https://bugzilla.redhat.com/show_bug.cgi?id=1999589
https://www.openwall.com/lists/oss-security/2021/09/01/4
https://github.com/torvalds/linux/commit/2287a51ba822384834dafc1c798453375d1107c7
Source: MITRE
Published: 2022-02-16
Updated: 2022-12-07
Type: CWE-125
Base Score: 1.9
Vector: AV:L/AC:M/Au:N/C:P/I:N/A:N
Impact Score: 2.9
Exploitability Score: 3.4
Severity: LOW
Base Score: 4.7
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Impact Score: 3.6
Exploitability Score: 1
Severity: MEDIUM