In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image and performing some operations can cause slab-out-of-bounds write access in __btrfs_map_block in fs/btrfs/volumes.c, because a value of 1 for the number of data stripes is mishandled.
NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.
|Base Score:||7.8||Base Metrics:||AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H|
|Access Vector:||Local network||Attack Complexity:||Low|
|Privileges Required:||None||User Interaction:||Required|
|Integrity Impact:||High||Availability Impact:||High|
|Oracle Linux version 7 (kernel-uek)||ELSA-2020-5995||2020-12-14|
This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections please contact the Oracle Linux ULN team