Buffer overflow in Kernel Heap-Based Buffer Overflow In Fs/ext4/xattr.c
CVE-2018-10840
Linux kernel is vulnerable to a heap-based buffer overflow in the fs/ext4/xattr.c:ext4_xattr_set_entry() function. An attacker could exploit this by operating on a mounted crafted ext4 image.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.6 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (50.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Kernel Heap-Based Buffer Overflow In Fs/ext4/xattr.c
- Linux Kernel
- Canonical Ubuntu Linux — versions 14.04, 18.04
- Red Hat Enterprise Linux — versions 7.0
Weakness classification (CWE)
References
- usn.ubuntu.com/3752-2/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3752-3/ (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2019:0162 (vendor-advisory, Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (Exploit, Patch, Third Party Advisory, Issue Tracking)
- www.securityfocus.com/bid/104858 (VDB Entry, Third Party Advisory, vdb-entry)
- usn.ubuntu.com/3752-1/ (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-10840?
- CVE-2018-10840 is a medium-severity vulnerability in Kernel Heap-Based Buffer Overflow In Fs/ext4/xattr.c, classified under Heap-based Buffer Overflow. CVSS score: 6.6/10. Published 2018-07-16.
- How severe is CVE-2018-10840?
- Medium severity. CVSS v3 base score is 6.6 out of 10.