CVE-2015-8839

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Summary

CVECVE-2015-8839
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2016-05-02 10:59:22 UTC
Updated2026-05-06 22:30:45 UTC
DescriptionMultiple 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.

Risk And Classification

Primary CVSS: v3.1 5.1 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem Types: CWE-362 | n/a

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.1MEDIUMCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
2.0[email protected]Primary1.9AV:L/AC:M/Au:N/C:N/I:N/A:P

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v2.0 Breakdown

Access Vector
Local
Access Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial

AV:L/AC:M/Au:N/C:N/I:N/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Canonical Ubuntu Linux 14.04 All All All
Operating System Canonical Ubuntu Linux 16.04 All All All
Operating System Linux Linux Kernel 4.5 rc1 All All
Operating System Linux Linux Kernel 4.5 rc2 All All
Operating System Linux Linux Kernel 4.5 rc3 All All
Operating System Linux Linux Kernel 4.5 rc4 All All
Operating System Linux Linux Kernel 4.5 rc5 All All
Operating System Linux Linux Kernel 4.5 rc6 All All
Operating System Linux Linux Kernel 4.5 rc7 All All
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
[SECURITY] [DLA 2241-2] linux security update af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Third Party Advisory
oss-security - Re: ext4 data corruption due to punch hole races af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List, Third Party Advisory
USN-3007-1: Linux kernel (Raspberry Pi 2) vulnerabilities | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com Third Party Advisory
kernel/git/torvalds/linux.git - Linux kernel source tree af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Vendor Advisory
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
Linux Kernel ext4 Race Condition Lets Local Users Corrupt the Target Filesystem - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com Third Party Advisory, VDB Entry
USN-3005-1: Linux kernel (Xenial HWE) vulnerabilities | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com Third Party Advisory
Linux Kernel CVE-2015-8839 Local Security Bypass Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
1323577 – (CVE-2015-8839) CVE-2015-8839 kernel: ext4 filesystem page fault race condition with fallocate call. af854a3a-2127-422b-91ae-364da2661108 bugzilla.redhat.com Issue Tracking, Third Party Advisory
ext4: fix races between page faults and hole punching · torvalds/linux@ea3d720 · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Third Party Advisory
USN-3006-1: Linux kernel vulnerabilities | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com Third Party Advisory
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
[SECURITY] [DLA 2241-1] linux security update af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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