Description
An issue was discovered in the Linux kernel through 4.17.10. There is an invalid pointer dereference in btrfs_root_node() when mounting a crafted btrfs image, because of a lack of chunk block group mapping validation in btrfs_read_block_groups in fs/btrfs/extent-tree.c, and a lack of empty-tree checks in check_leaf in fs/btrfs/tree-checker.c.
References (11)
Core 11
Core References
Third Party Advisory, VDB Entry vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/104917
Patch, Third Party Advisory x_refsource_misc
https://patchwork.kernel.org/patch/10503403/
Patch, Third Party Advisory x_refsource_misc
https://patchwork.kernel.org/patch/10503413/
Exploit, Issue Tracking, Third Party Advisory x_refsource_misc
https://bugzilla.kernel.org/show_bug.cgi?id=199847
Mailing List mailing-list
x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2019/03/msg00017.html
Vendor Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/3932-1/
Vendor Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/3932-2/
Vendor Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/4094-1/
Vendor Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/4118-1/
Mailing List mailing-list
x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html
Mailing List mailing-list
x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html
Scores
CVSS v3
5.5
EPSS
0.0259
EPSS Percentile
83.4%
Attack Vector
LOCAL
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Details
CWE
CWE-476
Status
published
Products (1)
linux/linux_kernel
< 4.17.10
Published
Jul 27, 2018
Tracked Since
Feb 18, 2026