Vulnerability in Linux Kernel
CVE-2015-8952
The mbcache feature in the ext2 and ext4 filesystem implementations in the Linux kernel before 4.6 mishandles xattr block caching, which allows local users to cause a denial of service (soft lockup) via filesystem operations in environments that use many attributes, as demonstrated by Ceph and Samba.
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: 0.005 (37.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 37.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
Weakness classification (CWE)
References
- bugzilla.redhat.com/show_bug.cgi (VDB Entry, Third Party Advisory, Issue Tracking)
- github.com/torvalds/linux/commit/f9a61eb4e2471c56a63cd804c7474128138c38ac (Issue Tracking)
- github.com/torvalds/linux/commit/82939d7999dfc1f1998c4b1c12e2f19edbdff272 (Vendor Advisory)
- usn.ubuntu.com/3582-1/ (vendor-advisory)
- bugzilla.kernel.org/show_bug.cgi (Third Party Advisory, Issue Tracking)
- www.openwall.com/lists/oss-security/2016/08/25/4 (mailing-list, Patch, Third Party Advisory)
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Patch)
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Patch)
- www.openwall.com/lists/oss-security/2016/08/22/2 (mailing-list, Third Party Advisory)
- github.com/torvalds/linux/commit/be0726d33cb8f411945884664924bed3cb8c70ee (Patch, Issue Tracking)
Frequently asked questions
- What is CVE-2015-8952?
- CVE-2015-8952 is a medium-severity vulnerability in Linux Kernel, classified under CWE-19. CVSS score: 5.5/10. Published 2016-10-16.
- How severe is CVE-2015-8952?
- Medium severity. CVSS v3 base score is 5.5 out of 10.