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Vulnerability Details : CVE-2015-8839

Multiple race conditions in the ext4 filesystem implementation in the Linux kernel before 4.5 allow local users to cause a denial of service (disk corruption) by writing to a page that is associated with a different user's file after unsynchronized hole punching and page-fault handling.
Publish Date : 2016-05-02 Last Update Date : 2020-10-02
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- CVSS Scores & Vulnerability Types

CVSS Score
1.9
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID 362

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2017:1842: kernel security, bug fix, and enhancement update (Important) oval:com.redhat.rhsa:def:20171842 unix
RHSA-2017:2077: kernel-rt security, bug fix, and enhancement update (Important) oval:com.redhat.rhsa:def:20172077 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2015-8839

# Product Type Vendor Product Version Update Edition Language
1 OS Canonical Ubuntu Linux 14.04 * * * Version Details Vulnerabilities
2 OS Canonical Ubuntu Linux 16.04 * * * Version Details Vulnerabilities
3 OS Linux Linux Kernel * * * * Version Details Vulnerabilities
4 OS Linux Linux Kernel 4.5 RC5 * * Version Details Vulnerabilities
5 OS Linux Linux Kernel 4.5 RC6 * * Version Details Vulnerabilities
6 OS Linux Linux Kernel 4.5 RC1 * * Version Details Vulnerabilities
7 OS Linux Linux Kernel 4.5 RC7 * * Version Details Vulnerabilities
8 OS Linux Linux Kernel 4.5 RC2 * * Version Details Vulnerabilities
9 OS Linux Linux Kernel 4.5 RC3 * * Version Details Vulnerabilities
10 OS Linux Linux Kernel 4.5 RC4 * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Canonical Ubuntu Linux 2
Linux Linux Kernel 8

- References For CVE-2015-8839

https://access.redhat.com/errata/RHSA-2017:1842
REDHAT RHSA-2017:1842
https://access.redhat.com/errata/RHSA-2017:2077
REDHAT RHSA-2017:2077
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ea3d7209ca01da209cda6f0dea8be9cc4b7a933b CONFIRM
http://www.securitytracker.com/id/1035455
SECTRACK 1035455
http://www.ubuntu.com/usn/USN-3005-1
UBUNTU USN-3005-1
http://www.ubuntu.com/usn/USN-3006-1
UBUNTU USN-3006-1
http://www.ubuntu.com/usn/USN-3007-1
UBUNTU USN-3007-1
https://access.redhat.com/errata/RHSA-2017:2669
REDHAT RHSA-2017:2669
https://bugzilla.redhat.com/show_bug.cgi?id=1323577 CONFIRM
https://github.com/torvalds/linux/commit/ea3d7209ca01da209cda6f0dea8be9cc4b7a933b CONFIRM
http://www.openwall.com/lists/oss-security/2016/04/01/4
MLIST [oss-security] 20160401 Re: ext4 data corruption due to punch hole races
http://www.securityfocus.com/bid/85798
BID 85798 Linux Kernel CVE-2015-8839 Local Security Bypass Vulnerability Release Date:2016-09-08
https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html
MLIST [debian-lts-announce] 20200609 [SECURITY] [DLA 2241-1] linux security update
https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html
MLIST [debian-lts-announce] 20200610 [SECURITY] [DLA 2241-2] linux security update

- Metasploit Modules Related To CVE-2015-8839

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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