CVE-2015-8839
published 2016-05-02CVE-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)…
PriorityP416medium5.1CVSS 3.1
AVLACHPRNUINSUCNINAH
EPSS
0.35%
27.8th percentile
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.
Affected
11 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| debian | linux | < linux 4.5.1-1 (bookworm) | linux 4.5.1-1 (bookworm) |
| android | — | — | |
| linux | linux_kernel | <= 4.4.221 | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 4.5.1-1 | 4.5.1-1 |
| linux | linux_kernel | >= 0 < 4.5.1-1 | 4.5.1-1 |
| linux | linux_kernel | >= 0 < 4.5.1-1 | 4.5.1-1 |
| linux | linux_kernel | >= 0 < 4.5.1-1 | 4.5.1-1 |
| linux | linux_kernel | >= 0 < 4.4.0-24.43 | 4.4.0-24.43 |
CVSS provenance
nvdv3.15.1MEDIUMCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
nvdv2.01.9LOWAV:L/AC:M/Au:N/C:N/I:N/A:P
osv5.1MEDIUM
vendor_debian5.1MEDIUM
vendor_redhat5.1MEDIUM
vendor_ubuntu5.1MEDIUM
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Android
CVE-2015-8839: Android Security Bulletin 2016-09-01
CVE: CVE-2015-8839
Severity: HIGH
References: A-28760453*
vendor_android·2016-09-01·CVSS 5.1
CVE-2015-8839 [MEDIUM] CVE-2015-8839: Android Security Bulletin 2016-09-01
CVE: CVE-2015-8839
Severity: HIGH
References: A-28760453*
Android Security Bulletin 2016-09-01
CVE: CVE-2015-8839
Severity: HIGH
References: A-28760453*
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2016-06-10·CVSS 5.1
CVE-2015-8839 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the kernel.
Justin Yackoski discovered that the Atheros L2 Ethernet Driver in the Linux
kernel incorrectly enables scatter/gather I/O. A remote attacker could use
this to obtain potentially sensitive information from kernel memory.
(CVE-2016-2117)
Jann Horn discovered that eCryptfs improperly attempted to use the mmap()
handler of a lower filesystem that did not implement one, causing a
recursive page fault to occur. A local unprivileged attacker could use to
cause a denial of service (system crash) or possibly execute arbitrary code
with administrative privileges. (CVE-2016-1583)
Multiple race conditions where discovered in the Linux kernel's ext4 file
system. A local user could exploit this flaw to cau
Ubuntu
Linux kernel (Xenial HWE) vulnerabilities
vendor_ubuntu·2016-06-10·CVSS 5.1
CVE-2015-8839 [MEDIUM] Linux kernel (Xenial HWE) vulnerabilities
Title: Linux kernel (Xenial HWE) vulnerabilities
Summary: Several security issues were fixed in the kernel.
Justin Yackoski discovered that the Atheros L2 Ethernet Driver in the Linux
kernel incorrectly enables scatter/gather I/O. A remote attacker could use
this to obtain potentially sensitive information from kernel memory.
(CVE-2016-2117)
Jann Horn discovered that eCryptfs improperly attempted to use the mmap()
handler of a lower filesystem that did not implement one, causing a
recursive page fault to occur. A local unprivileged attacker could use to
cause a denial of service (system crash) or possibly execute arbitrary code
with administrative privileges. (CVE-2016-1583)
Multiple race conditions where discovered in the Linux kernel's ext4 file
system. A local user could exploit thi
Ubuntu
Linux kernel (Raspberry Pi 2) vulnerabilities
vendor_ubuntu·2016-06-10·CVSS 5.1
CVE-2015-8839 [MEDIUM] Linux kernel (Raspberry Pi 2) vulnerabilities
Title: Linux kernel (Raspberry Pi 2) vulnerabilities
Summary: Several security issues were fixed in the kernel.
Justin Yackoski discovered that the Atheros L2 Ethernet Driver in the Linux
kernel incorrectly enables scatter/gather I/O. A remote attacker could use
this to obtain potentially sensitive information from kernel memory.
(CVE-2016-2117)
Jann Horn discovered that eCryptfs improperly attempted to use the mmap()
handler of a lower filesystem that did not implement one, causing a
recursive page fault to occur. A local unprivileged attacker could use to
cause a denial of service (system crash) or possibly execute arbitrary code
with administrative privileges. (CVE-2016-1583)
Multiple race conditions where discovered in the Linux kernel's ext4 file
system. A local user could exploit
Red Hat
kernel: ext4 filesystem page fault race condition with fallocate call.
vendor_redhat·2016-03-31·CVSS 5.1
CVE-2015-8839 [MEDIUM] CWE-362 kernel: ext4 filesystem page fault race condition with fallocate call.
kernel: ext4 filesystem page fault race condition with fallocate call.
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.
A flaw was found in the Linux kernel when attempting to "punch a hole" in files existing on an ext4 filesystem. When punching holes into a file races with the page fault of the same area, it is possible that freed blocks remain referenced from page cache pages mapped to process' address space.
Statement: This issue does not affect the Linux kernels as shipped with Red Hat Enterprise Linux 5 and 6.
This issue affects the Linux kernels
Debian
CVE-2015-8839: linux - Multiple race conditions in the ext4 filesystem implementation in the Linux kern...
vendor_debian·2015·CVSS 5.1
CVE-2015-8839 [MEDIUM] CVE-2015-8839: linux - Multiple race conditions in the ext4 filesystem implementation in the Linux kern...
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.
Scope: local
bookworm: resolved (fixed in 4.5.1-1)
bullseye: resolved (fixed in 4.5.1-1)
forky: resolved (fixed in 4.5.1-1)
sid: resolved (fixed in 4.5.1-1)
trixie: resolved (fixed in 4.5.1-1)
GHSA
GHSA-jx35-8v43-xcjq: Multiple race conditions in the ext4 filesystem implementation in the Linux kernel before 4
ghsa_unreviewed·2022-05-13
CVE-2015-8839 [MEDIUM] CWE-362 GHSA-jx35-8v43-xcjq: Multiple race conditions in the ext4 filesystem implementation in the Linux kernel before 4
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.
OSV
linux-raspi2 vulnerabilities
osv·2016-06-10·CVSS 5.1
CVE-2016-2117 [MEDIUM] linux-raspi2 vulnerabilities
linux-raspi2 vulnerabilities
Justin Yackoski discovered that the Atheros L2 Ethernet Driver in the Linux
kernel incorrectly enables scatter/gather I/O. A remote attacker could use
this to obtain potentially sensitive information from kernel memory.
(CVE-2016-2117)
Jann Horn discovered that eCryptfs improperly attempted to use the mmap()
handler of a lower filesystem that did not implement one, causing a
recursive page fault to occur. A local unprivileged attacker could use to
cause a denial of service (system crash) or possibly execute arbitrary code
with administrative privileges. (CVE-2016-1583)
Multiple race conditions where discovered in the Linux kernel's ext4 file
system. A local user could exploit this flaw to cause a denial of service
(disk corruption) by writing to a page that
OSV
linux vulnerabilities
osv·2016-06-10·CVSS 5.1
CVE-2016-2117 [MEDIUM] linux vulnerabilities
linux vulnerabilities
Justin Yackoski discovered that the Atheros L2 Ethernet Driver in the Linux
kernel incorrectly enables scatter/gather I/O. A remote attacker could use
this to obtain potentially sensitive information from kernel memory.
(CVE-2016-2117)
Jann Horn discovered that eCryptfs improperly attempted to use the mmap()
handler of a lower filesystem that did not implement one, causing a
recursive page fault to occur. A local unprivileged attacker could use to
cause a denial of service (system crash) or possibly execute arbitrary code
with administrative privileges. (CVE-2016-1583)
Multiple race conditions where discovered in the Linux kernel's ext4 file
system. A local user could exploit this flaw to cause a denial of service
(disk corruption) by writing to a page that is asso
OSV
linux-lts-xenial vulnerabilities
osv·2016-06-10·CVSS 5.1
CVE-2016-2117 [MEDIUM] linux-lts-xenial vulnerabilities
linux-lts-xenial vulnerabilities
Justin Yackoski discovered that the Atheros L2 Ethernet Driver in the Linux
kernel incorrectly enables scatter/gather I/O. A remote attacker could use
this to obtain potentially sensitive information from kernel memory.
(CVE-2016-2117)
Jann Horn discovered that eCryptfs improperly attempted to use the mmap()
handler of a lower filesystem that did not implement one, causing a
recursive page fault to occur. A local unprivileged attacker could use to
cause a denial of service (system crash) or possibly execute arbitrary code
with administrative privileges. (CVE-2016-1583)
Multiple race conditions where discovered in the Linux kernel's ext4 file
system. A local user could exploit this flaw to cause a denial of service
(disk corruption) by writing to a page t
OSV
CVE-2015-8839: Multiple race conditions in the ext4 filesystem implementation in the Linux kernel before 4
osv·2016-05-02·CVSS 5.1
CVE-2015-8839 [MEDIUM] CVE-2015-8839: Multiple race conditions in the ext4 filesystem implementation in the Linux kernel before 4
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.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2015-8839 kernel: ext4 data corruption due to punch hole races [fedora-all]
bugzilla·2016-04-04·CVSS 5.1
CVE-2015-8839 [MEDIUM] CVE-2015-8839 kernel: ext4 data corruption due to punch hole races [fedora-all]
CVE-2015-8839 kernel: ext4 data corruption due to punch hole races [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of Fedora.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple supported versions o
Bugzilla
CVE-2015-8839 kernel: ext4 filesystem page fault race condition with fallocate call.
bugzilla·2016-04-04·CVSS 5.1
CVE-2015-8839 [MEDIUM] CVE-2015-8839 kernel: ext4 filesystem page fault race condition with fallocate call.
CVE-2015-8839 kernel: ext4 filesystem page fault race condition with fallocate call.
A flaw was found in the Linux kernel when attempting to "punch a hole" in files existing on an ext4 filesystem. When punching holes into a file races with the page fault of the same area, it is possible that freed blocks remain referenced from page cache pages mapped to process' address space.
Thus modification of these blocks can corrupt data someone else is now storing in those blocks when at some point those pages are written to disk.
Upstream fixes:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ea3d7209ca01da209cda6f0dea8be9cc4b7a933b
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=17048e8a083fec7ad841d88ef0812707fbc7e39f
http://git.kernel.org/c
arXiv
The Security War in File Systems: An Empirical Study from A Vulnerability-Centric Perspective
arxiv_fulltext·2022-04-26
The Security War in File Systems: An Empirical Study from A Vulnerability-Centric Perspective
The Security War in File Systems: An Empirical Study from A Vulnerability-Centric Perspective
## Abstract
This paper presents a systematic study on the security of modern file systems,
following a vulnerability-centric perspective. Specifically,
we collected 377 file system vulnerabilities committed to the CVE database in the past 20 years.
We characterize them from four dimensions that include why the vulnerabilities appear,
how the vulnerabilities can be exploited, what consequences can arise,
and how the vulnerabilities are fixed. This way, we build a deep understanding of
the attack surfaces faced by file systems, the threats imposed by the attack surfaces,
and the good and bad practices in mitigating the attacks in file systems. We envision that our study
will bring insights toward
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ea3d7209ca01da209cda6f0dea8be9cc4b7a933bhttp://www.openwall.com/lists/oss-security/2016/04/01/4http://www.securityfocus.com/bid/85798http://www.securitytracker.com/id/1035455http://www.ubuntu.com/usn/USN-3005-1http://www.ubuntu.com/usn/USN-3006-1http://www.ubuntu.com/usn/USN-3007-1https://access.redhat.com/errata/RHSA-2017:1842https://access.redhat.com/errata/RHSA-2017:2077https://access.redhat.com/errata/RHSA-2017:2669https://bugzilla.redhat.com/show_bug.cgi?id=1323577https://github.com/torvalds/linux/commit/ea3d7209ca01da209cda6f0dea8be9cc4b7a933bhttps://lists.debian.org/debian-lts-announce/2020/06/msg00011.htmlhttps://lists.debian.org/debian-lts-announce/2020/06/msg00013.htmlhttp://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ea3d7209ca01da209cda6f0dea8be9cc4b7a933bhttp://www.openwall.com/lists/oss-security/2016/04/01/4http://www.securityfocus.com/bid/85798http://www.securitytracker.com/id/1035455http://www.ubuntu.com/usn/USN-3005-1http://www.ubuntu.com/usn/USN-3006-1http://www.ubuntu.com/usn/USN-3007-1https://access.redhat.com/errata/RHSA-2017:1842https://access.redhat.com/errata/RHSA-2017:2077https://access.redhat.com/errata/RHSA-2017:2669https://bugzilla.redhat.com/show_bug.cgi?id=1323577https://github.com/torvalds/linux/commit/ea3d7209ca01da209cda6f0dea8be9cc4b7a933bhttps://lists.debian.org/debian-lts-announce/2020/06/msg00011.htmlhttps://lists.debian.org/debian-lts-announce/2020/06/msg00013.html
2016-05-02
Published