NULL Pointer Dereference Affecting kernel-uek-doc package, versions <0:3.8.13-118.29.1.el7uek
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.
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- published10 Apr 2022
- disclosed2 Apr 2018
Introduced: 2 Apr 2018
CVE-2018-1092 (opens in a new tab)How to fix?
Upgrade Oracle:7 kernel-uek-doc to version 0:3.8.13-118.29.1.el7uek or higher.
This issue was patched in ELSA-2019-4316.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-uek-doc package and not the kernel-uek-doc package as distributed by Oracle.
See How to fix? for Oracle:7 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://linux.oracle.com/cve/CVE-2018-1092.html
- https://linux.oracle.com/errata/ELSA-2018-3083.html
- https://linux.oracle.com/errata/ELSA-2019-4315.html
- https://linux.oracle.com/errata/ELSA-2019-4316.html
- https://linux.oracle.com/errata/ELSA-2019-4317.html
- 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