NULL pointer dereference in Linux Kernel
CVE-2017-18241
fs/f2fs/segment.c in the Linux kernel before 4.13 allows local users to cause a denial of service (NULL pointer dereference and panic) by using a noflush_merge option that triggers a NULL value for a flush_cmd_control data structure.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (32.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 32nd percentile — 32.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Linux Kernel
- Canonical Ubuntu Linux — versions 14.04, 16.04
- Debian Linux — versions 8.0, 9.0
Weakness classification (CWE)
References
- www.debian.org/security/2018/dsa-4187 (vendor-advisory, Third Party Advisory)
- github.com/torvalds/linux/commit/d4fdf8ba0e5808ba9ad6b44337783bd9935e0982 (Patch, Third Party Advisory)
- usn.ubuntu.com/3910-1/ (vendor-advisory, Third Party Advisory)
- www.debian.org/security/2018/dsa-4188 (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3910-2/ (vendor-advisory, Third Party Advisory)
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2017-18241?
- CVE-2017-18241 is a medium-severity vulnerability in Linux Kernel, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2018-03-21.
- How severe is CVE-2017-18241?
- Medium severity. CVSS v3 base score is 5.5 out of 10.