An Out-of-Bounds Read was discovered in arch/arm/mach-footbridge/personal-pci.c in the Linux kernel through 5.12.11 because of the lack of a check for a value that shouldn't be negative, e.g., access to element -2 of an array, aka CID-298a58e165e4.
https://github.com/torvalds/linux/commit/298a58e165e447ccfaae35fe9f651f9d7e15166f
Source: MITRE
Published: 2021-06-17
Updated: 2021-09-20
Type: CWE-125
Base Score: 6.6
Vector: AV:L/AC:L/Au:N/C:C/I:N/A:C
Impact Score: 9.2
Exploitability Score: 3.9
Severity: MEDIUM
Base Score: 7.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Impact Score: 5.2
Exploitability Score: 1.8
Severity: HIGH