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CVE-2015-8839

Date: May 2, 2016

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.

Language: C

Severity Score

Related Resources (19)

http://www.ubuntu.com/usn/USN-3006-1
http://www.ubuntu.com/usn/USN-3005-1
https://bugzilla.redhat.com/show_bug.cgi?id=1323577
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ea3d7209ca01da209cda6f0dea8be9cc4b7a933b
https://people.canonical.com/~ubuntu-security/cve/CVE-2015-8839
https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html
https://access.redhat.com/errata/RHSA-2017:2077
https://nvd.nist.gov/vuln/detail/CVE-2015-8839
http://www.openwall.com/lists/oss-security/2016/04/01/4
http://www.securityfocus.com/bid/85798
https://access.redhat.com/errata/RHSA-2017:1842
https://access.redhat.com/errata/RHSA-2017:2669
http://www.securitytracker.com/id/1035455
https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html
https://access.redhat.com/security/cve/CVE-2015-8839
https://github.com/torvalds/linux/commit/ea3d7209ca01da209cda6f0dea8be9cc4b7a933b
http://www.ubuntu.com/usn/USN-3007-1
https://security-tracker.debian.org/tracker/CVE-2015-8839
https://www.mend.io/vulnerability-database/CVE-2015-8839

Severity Score

Weakness Type (CWE)

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CWE-362

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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