NULL pointer dereference in Linux Kernel
CVE-2018-13093
An issue was discovered in fs/xfs/xfs_icache.c in the Linux kernel through 4.17.3. There is a NULL pointer dereference and panic in lookup_slow() on a NULL inode->i_ops pointer when doing pathwalks on a corrupted xfs image. This occurs because of a lack of proper validation that cached inodes are free during allocation.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.017 (76.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 76.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- git.kernel.org/pub/scm/fs/xfs/xfs-linux.git/commit/ (Patch, Third Party Advisory)
- github.com/torvalds/linux/commit/afca6c5b2595fc44383919fba740c194b0b76aff (Patch)
- bugzilla.kernel.org/show_bug.cgi (Third Party Advisory, Issue Tracking)
- access.redhat.com/errata/RHSA-2019:2043 (vendor-advisory)
- access.redhat.com/errata/RHSA-2019:2029 (vendor-advisory)
- usn.ubuntu.com/4094-1/ (vendor-advisory)
- usn.ubuntu.com/4118-1/ (vendor-advisory)
- lists.debian.org/debian-lts-announce/2020/03/msg00001.html (mailing-list)
Frequently asked questions
- What is CVE-2018-13093?
- CVE-2018-13093 is a medium-severity vulnerability in Linux Kernel, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2018-07-03.
- How severe is CVE-2018-13093?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2018-13093 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.