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.
Vulnerability category: Denial of service
Products affected by CVE-2015-8839
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:4.5:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:4.5:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:4.5:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:4.5:rc4:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:4.5:rc5:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:4.5:rc6:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:4.5:rc7:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2015-8839
0.14%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 50 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2015-8839
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
1.9
|
LOW | AV:L/AC:M/Au:N/C:N/I:N/A:P |
3.4
|
2.9
|
NIST | |
|
5.1
|
MEDIUM | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
1.4
|
3.6
|
NIST |
CWE ids for CVE-2015-8839
-
The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.Assigned by: nvd@nist.gov (Primary)
References for CVE-2015-8839
-
https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html
[SECURITY] [DLA 2241-2] linux security updateThird Party Advisory
-
http://www.ubuntu.com/usn/USN-3005-1
USN-3005-1: Linux kernel (Xenial HWE) vulnerabilities | Ubuntu security noticesThird Party Advisory
-
http://www.openwall.com/lists/oss-security/2016/04/01/4
oss-security - Re: ext4 data corruption due to punch hole racesMailing List;Third Party Advisory
-
https://github.com/torvalds/linux/commit/ea3d7209ca01da209cda6f0dea8be9cc4b7a933b
ext4: fix races between page faults and hole punching · torvalds/linux@ea3d720 · GitHubThird Party Advisory
-
https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html
[SECURITY] [DLA 2241-1] linux security updateThird Party Advisory
-
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ea3d7209ca01da209cda6f0dea8be9cc4b7a933b
kernel/git/torvalds/linux.git - Linux kernel source treeVendor Advisory
-
https://access.redhat.com/errata/RHSA-2017:1842
RHSA-2017:1842 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://access.redhat.com/errata/RHSA-2017:2077
RHSA-2017:2077 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
http://www.securityfocus.com/bid/85798
Linux Kernel CVE-2015-8839 Local Security Bypass VulnerabilityThird Party Advisory;VDB Entry
-
http://www.securitytracker.com/id/1035455
Linux Kernel ext4 Race Condition Lets Local Users Corrupt the Target Filesystem - SecurityTrackerThird Party Advisory;VDB Entry
-
http://www.ubuntu.com/usn/USN-3007-1
USN-3007-1: Linux kernel (Raspberry Pi 2) vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=1323577
1323577 – (CVE-2015-8839) CVE-2015-8839 kernel: ext4 filesystem page fault race condition with fallocate call.Issue Tracking;Third Party Advisory
-
https://access.redhat.com/errata/RHSA-2017:2669
RHSA-2017:2669 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
http://www.ubuntu.com/usn/USN-3006-1
USN-3006-1: Linux kernel vulnerabilities | Ubuntu security noticesThird Party Advisory
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