Description
An issue was discovered in the Linux kernel through 4.17.10. There is an invalid pointer dereference in io_ctl_map_page() when mounting and operating a crafted btrfs image, because of a lack of block group item validation in check_leaf_item 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
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
Vendor Advisory x_refsource_misc
https://www.oracle.com/security-alerts/cpuApr2021.html
Patch, Third Party Advisory x_refsource_misc
https://patchwork.kernel.org/patch/10503147/
Exploit, Issue Tracking, Third Party Advisory x_refsource_misc
https://bugzilla.kernel.org/show_bug.cgi?id=199849
Scores
CVSS v3
5.5
EPSS
0.0251
EPSS Percentile
82.8%
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