CVE-2015-8952

5.5 MEDIUM
Published: October 16, 2016 Modified: May 06, 2026
View on NVD

Description

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=82939d7999dfc1f1998c4b1c12e2f19edbdff272
Source: cve@mitre.org
Patch
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=be0726d33cb8f411945884664924bed3cb8c70ee
Source: cve@mitre.org
Patch
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f9a61eb4e2471c56a63cd804c7474128138c38ac
Source: cve@mitre.org
Patch
http://www.openwall.com/lists/oss-security/2016/08/22/2
Source: cve@mitre.org
Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/08/25/4
Source: cve@mitre.org
Patch Third Party Advisory
https://bugzilla.kernel.org/show_bug.cgi?id=107301
Source: cve@mitre.org
Issue Tracking Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1360968
Source: cve@mitre.org
Issue Tracking Third Party Advisory VDB Entry
https://github.com/torvalds/linux/commit/82939d7999dfc1f1998c4b1c12e2f19edbdff272
Source: cve@mitre.org
Vendor Advisory
https://github.com/torvalds/linux/commit/be0726d33cb8f411945884664924bed3cb8c70ee
Source: cve@mitre.org
Issue Tracking Patch
https://github.com/torvalds/linux/commit/f9a61eb4e2471c56a63cd804c7474128138c38ac
Source: cve@mitre.org
Issue Tracking
https://lwn.net/Articles/668718/
Source: cve@mitre.org
Third Party Advisory
https://usn.ubuntu.com/3582-1/
Source: cve@mitre.org
https://usn.ubuntu.com/3582-2/
Source: cve@mitre.org
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=82939d7999dfc1f1998c4b1c12e2f19edbdff272
Source: af854a3a-2127-422b-91ae-364da2661108
Patch
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=be0726d33cb8f411945884664924bed3cb8c70ee
Source: af854a3a-2127-422b-91ae-364da2661108
Patch
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f9a61eb4e2471c56a63cd804c7474128138c38ac
Source: af854a3a-2127-422b-91ae-364da2661108
Patch
http://www.openwall.com/lists/oss-security/2016/08/22/2
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/08/25/4
Source: af854a3a-2127-422b-91ae-364da2661108
Patch Third Party Advisory
https://bugzilla.kernel.org/show_bug.cgi?id=107301
Source: af854a3a-2127-422b-91ae-364da2661108
Issue Tracking Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1360968
Source: af854a3a-2127-422b-91ae-364da2661108
Issue Tracking Third Party Advisory VDB Entry
https://github.com/torvalds/linux/commit/82939d7999dfc1f1998c4b1c12e2f19edbdff272
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
https://github.com/torvalds/linux/commit/be0726d33cb8f411945884664924bed3cb8c70ee
Source: af854a3a-2127-422b-91ae-364da2661108
Issue Tracking Patch
https://github.com/torvalds/linux/commit/f9a61eb4e2471c56a63cd804c7474128138c38ac
Source: af854a3a-2127-422b-91ae-364da2661108
Issue Tracking
https://lwn.net/Articles/668718/
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://usn.ubuntu.com/3582-1/
Source: af854a3a-2127-422b-91ae-364da2661108
https://usn.ubuntu.com/3582-2/
Source: af854a3a-2127-422b-91ae-364da2661108

26 reference(s) from NVD

Quick Stats

CVSS v3 Score
5.5 / 10.0
EPSS (Exploit Probability)
0.1%
23th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-19

Affected Vendors

linux

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