CVE-2014-9710
Vulnerability Summary
Timeline
Description
The Btrfs implementation in the Linux kernel before 3.19 does not ensure that the visible xattr state is consistent with a requested replacement, which allows local users to bypass intended ACL settings and gain privileges via standard filesystem operations (1) during an xattr-replacement time window, related to a race condition, or (2) after an xattr-replacement attempt that fails because the data does not fit.
CVSS Metrics
- v2.0•MEDIUM•Score: 6.9AV:L/AC:M/Au:N/C:C/I:C/A:C
EPSS Trends
Current EPSS score: 0.28%• Percentile: 20%
Techniques & Countermeasures
- CWE-362•Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
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.
Affected Systems
- debian•linux
< 3.16.7-ckt9-1 | < 3.16.7-ckt9-1 | < 3.16.7-ckt9-1 | < 3.16.7-ckt9-1
- ubuntu•linux
< 3.13.0-57.95
- ubuntu•linux-azure
all
- ubuntu•linux-azure-6.11
all
- ubuntu•linux-azure-fde
all
- ubuntu•linux-azure-fde-5.15
all
- ubuntu•linux-gcp
all
- ubuntu•linux-gcp-6.11
all
- ubuntu•linux-gke
all
- ubuntu•linux-gkeop
all
- ubuntu•linux-hwe
all
- ubuntu•linux-hwe-6.11
all
- ubuntu•linux-hwe-edge
all
- ubuntu•linux-intel-iot-realtime
all
- ubuntu•linux-lowlatency-hwe-6.11
all
- ubuntu•linux-lts-utopic
< 3.16.0-38.52~14.04.1
- ubuntu•linux-raspi-realtime
all
- ubuntu•linux-raspi2
all
- ubuntu•linux-realtime
all | all
- ubuntu•linux-riscv
all | all | all
- linux•linux_kernel
< 3.10.83 | ≥ 3.11, < 3.12.45 | ≥ 3.13, < 3.14.47 | ≥ 3.15, < 3.16.35 | ≥ 3.17, < 3.18.19
References (14)
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=5f5bc6b1e2d5a6f827bc860ef2dc5b6f365d1339
- http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00009.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1205079
- http://www.securitytracker.com/id/1032418
- http://www.openwall.com/lists/oss-security/2015/03/24/11
- http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00023.html
- https://github.com/torvalds/linux/commit/5f5bc6b1e2d5a6f827bc860ef2dc5b6f365d1339
- https://ubuntu.com/security/CVE-2014-9710
- https://ubuntu.com/security/notices/USN-2615-1
- https://ubuntu.com/security/notices/USN-2616-1
- https://ubuntu.com/security/notices/USN-2662-1
- https://ubuntu.com/security/notices/USN-2663-1
- https://www.cve.org/CVERecord?id=CVE-2014-9710
- https://security-tracker.debian.org/tracker/CVE-2014-9710