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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- http://www.securityfocus.com/bid/104917 ↗
- https://patchwork.kernel.org/patch/10503403/ ↗
- https://patchwork.kernel.org/patch/10503413/ ↗
- https://bugzilla.kernel.org/show_bug.cgi?id=199847 ↗
- https://lists.debian.org/debian-lts-announce/2019/03/msg00017.html ↗
- https://usn.ubuntu.com/3932-1/ ↗
- https://usn.ubuntu.com/3932-2/ ↗
- https://usn.ubuntu.com/4094-1/ ↗
- https://usn.ubuntu.com/4118-1/ ↗
- https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html ↗
- https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html ↗