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.
SeverityMedium
CVSS5.5
Exploit probability—
Product
Linux Kernel
PublishedApr 2, 2018
First seenApr 2, 2018
How to fix
Vendor advisories
- usn.ubuntu.com/3676-1/
- usn.ubuntu.com/3678-2/
- access.redhat.com/errata/RHSA-2018:3083
- debian.org/security/2018/dsa-4187
- usn.ubuntu.com/3678-1/
- usn.ubuntu.com/3677-1/
- debian.org/security/2018/dsa-4188
- usn.ubuntu.com/3754-1/
- access.redhat.com/errata/RHSA-2018:2948
- usn.ubuntu.com/3678-3/
- usn.ubuntu.com/3677-2/
- usn.ubuntu.com/3676-2/
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | v ≤ 4.15.15 | — |
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