What is CVE-2018-1092?

CVE-2018-1092 is a medium-severity vulnerability in Linux Kernel, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2018-04-02.

How severe is CVE-2018-1092?

Medium severity. CVSS v3 base score is 5.5 out of 10.

NULL pointer dereference in Linux Kernel

CVE-2018-1092

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.

EPSS: 0.020 (78.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

Affected products

Linux Linux_kernel
N/a Linux Kernel Through Version 4.15 — versions Linux kernel through version 4.15

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

secalert@redhat.com (x_refsource_UBUNTU, vendor-advisory)
secalert@redhat.com (x_refsource_UBUNTU, vendor-advisory)
secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
secalert@redhat.com (Mailing List, Third Party Advisory, x_refsource_MISC)
secalert@redhat.com (vendor-advisory, x_refsource_DEBIAN)
secalert@redhat.com (x_refsource_UBUNTU, vendor-advisory)
secalert@redhat.com (x_refsource_UBUNTU, vendor-advisory)
secalert@redhat.com (vendor-advisory, x_refsource_DEBIAN)
secalert@redhat.com (x_refsource_UBUNTU, vendor-advisory)
secalert@redhat.com (x_refsource_MISC, Issue Tracking)

Frequently asked questions

What is CVE-2018-1092?: CVE-2018-1092 is a medium-severity vulnerability in Linux Kernel, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2018-04-02.
How severe is CVE-2018-1092?: Medium severity. CVSS v3 base score is 5.5 out of 10.