NULL Pointer Dereference Affecting kernel-default-man package, versions <4.12.14-25.3.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsSnyk Learn
Learn about NULL Pointer Dereference vulnerabilities in an interactive lesson.
Start learning- Snyk IDSNYK-SLES150-KERNELDEFAULTMAN-2763557
- published14 Apr 2022
- disclosed27 Jul 2018
Introduced: 27 Jul 2018
CVE-2018-1092 (opens in a new tab)How to fix?
Upgrade SLES:15.0 kernel-default-man to version 4.12.14-25.3.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-default-man package and not the kernel-default-man package as distributed by SLES.
See How to fix? for SLES:15.0 relevant fixed versions and status.
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.suse.com/security/cve/CVE-2018-1092.html
- https://bugzilla.suse.com/1087012
- https://bugzilla.suse.com/1087082
- https://access.redhat.com/security/cve/CVE-2018-1092
- http://openwall.com/lists/oss-security/2018/03/29/1
- https://access.redhat.com/errata/RHSA-2018:2948
- https://access.redhat.com/errata/RHSA-2018:3083
- https://access.redhat.com/errata/RHSA-2018:3096
- https://bugzilla.kernel.org/show_bug.cgi?id=199179
- https://bugzilla.kernel.org/show_bug.cgi?id=199275
- https://bugzilla.redhat.com/show_bug.cgi?id=1560777
- https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=8e4b5eae5decd9dfe5a4ee369c22028f90ab4c44
- https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html
- https://usn.ubuntu.com/3676-1/
- https://usn.ubuntu.com/3676-2/
- https://usn.ubuntu.com/3677-1/
- https://usn.ubuntu.com/3677-2/
- https://usn.ubuntu.com/3678-1/
- https://usn.ubuntu.com/3678-2/
- https://usn.ubuntu.com/3678-3/
- https://usn.ubuntu.com/3678-4/
- https://usn.ubuntu.com/3754-1/
- https://www.debian.org/security/2018/dsa-4187
- https://www.debian.org/security/2018/dsa-4188