CVE-2018-14612: Null Pointer Dereference
First published: Fri Jul 27 2018(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | <=4.17.10 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.133-1 6.12.22-1 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- http://www.securityfocus.com/bid/104917
- https://bugzilla.kernel.org/show_bug.cgi?id=199847
- https://lists.debian.org/debian-lts-announce/2019/03/msg00017.html
- https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html
- https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html
- https://patchwork.kernel.org/patch/10503403/
- https://patchwork.kernel.org/patch/10503413/
- 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://launchpad.net/bugs/cve/CVE-2018-14612
- https://security-tracker.debian.org/tracker/CVE-2018-14612
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14612
- https://nvd.nist.gov/vuln/detail/CVE-2018-14612
- https://ubuntu.com/security/CVE-2018-14612
Frequently Asked Questions
What is the severity of CVE-2018-14612?
CVE-2018-14612 is classified as a high-severity vulnerability due to potential for denial of service.
How do I fix CVE-2018-14612?
To fix CVE-2018-14612, upgrade the Linux kernel to versions 5.10.223-1, 5.10.226-1, 6.1.123-1, 6.1.119-1, 6.12.11-1, or 6.12.12-1.
What causes the vulnerability CVE-2018-14612?
CVE-2018-14612 is caused by an invalid pointer dereference due to a lack of validation in the btrfs_root_node function.
Which versions of the Linux kernel are affected by CVE-2018-14612?
CVE-2018-14612 affects all Linux kernel versions through 4.17.10.
Is CVE-2018-14612 exploitable remotely?
Yes, CVE-2018-14612 can potentially be exploited remotely when mounting a crafted btrfs image.
- agent/type
- collector/launchpad-cve
- source/Launchpad
- agent/weakness
- agent/severity
- collector/mitre-cve
- source/MITRE
- agent/references
- agent/remedy
- agent/first-publish-date
- agent/description
- agent/trending
- agent/last-modified-date
- agent/event
- agent/source
- agent/tags
- agent/author
- agent/softwarecombine
- collector/usn-cve
- source/Ubuntu
- collector/security-tracker-debian
- source/Debian
- collector/nvd-cve
- source/NVD
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- collector/nvd-index
- package-manager/debian
- vendor/linux
- canonical/linux kernel
- version/linux kernel/4.17.10