Detections
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CVE-2018-1092
medium
Description
The ext4_iget function in fs/ext4/inode.c in the Linux kernel through 4.15.15 mishandles the case of a root directory with a zero i_links_count, which allows attackers to cause a denial of service (ext4_process_freed_data NULL pointer dereference and OOPS) via a crafted ext4 image.
References
https://www.debian.org/security/2018/dsa-4188
https://www.debian.org/security/2018/dsa-4187
https://usn.ubuntu.com/3754-1/
https://usn.ubuntu.com/3678-4/
https://usn.ubuntu.com/3678-3/
https://usn.ubuntu.com/3678-2/
https://usn.ubuntu.com/3678-1/
https://usn.ubuntu.com/3677-2/
https://usn.ubuntu.com/3677-1/
https://usn.ubuntu.com/3676-2/
https://usn.ubuntu.com/3676-1/
https://bugzilla.redhat.com/show_bug.cgi?id=1560777
https://access.redhat.com/errata/RHSA-2018:3096
https://access.redhat.com/errata/RHSA-2018:3083