Vulnerability Details : CVE-2016-0723
Race condition in the tty_ioctl function in drivers/tty/tty_io.c in the Linux kernel through 4.4.1 allows local users to obtain sensitive information from kernel memory or cause a denial of service (use-after-free and system crash) by making a TIOCGETD ioctl call during processing of a TIOCSETD ioctl call.
Vulnerability category: Memory CorruptionDenial of service
Products affected by CVE-2016-0723
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2016-0723
0.02%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 4 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2016-0723
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.6
|
MEDIUM | AV:L/AC:L/Au:N/C:P/I:N/A:C |
3.9
|
7.8
|
NIST | |
|
6.8
|
MEDIUM | CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H |
2.5
|
4.2
|
NIST |
CWE ids for CVE-2016-0723
-
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.Assigned by: nvd@nist.gov (Primary)
-
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-2016-0723
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http://www.ubuntu.com/usn/USN-2930-3
USN-2930-3: Linux kernel (Raspberry Pi 2) vulnerabilities | Ubuntu security notices
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http://www.ubuntu.com/usn/USN-2948-1
USN-2948-1: Linux kernel (Utopic HWE) vulnerabilities | Ubuntu security notices
-
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.html
[security-announce] SUSE-SU-2016:0911-1: important: Security update for
-
http://www.ubuntu.com/usn/USN-2930-2
USN-2930-2: Linux kernel (Wily HWE) vulnerabilities | Ubuntu security notices
-
http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.html
[security-announce] SUSE-SU-2016:1764-1: important: Security update for
-
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html
[security-announce] SUSE-SU-2016:1102-1: important: Security update for
-
http://www.debian.org/security/2016/dsa-3448
Debian -- Security Information -- DSA-3448-1 linux
-
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html
[security-announce] SUSE-SU-2016:2074-1: important: Security update for
-
http://www.ubuntu.com/usn/USN-2932-1
USN-2932-1: Linux kernel (Vivid HWE) vulnerabilities | Ubuntu security notices
-
https://support.f5.com/csp/article/K43650115
-
http://www.debian.org/security/2016/dsa-3503
Debian -- Security Information -- DSA-3503-1 linux
-
http://www.securitytracker.com/id/1035695
Linux Kernel tty Subsystem Use-After-Free Memory Error Lets Local Users Obtain Portions of Kernel Memory and Potentially Cause a Kernel Panic - SecurityTracker
-
http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html
Oracle VM Server for x86 Bulletin - October 2016
-
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.html
[security-announce] openSUSE-SU-2016:1008-1: important: Security update
-
http://www.ubuntu.com/usn/USN-2967-2
USN-2967-2: Linux kernel (OMAP4) vulnerabilities | Ubuntu security notices
-
http://www.ubuntu.com/usn/USN-2929-2
USN-2929-2: Linux kernel (Trusty HWE) vulnerabilities | Ubuntu security notices
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http://www.ubuntu.com/usn/USN-2929-1
USN-2929-1: Linux kernel vulnerabilities | Ubuntu security notices
-
https://github.com/torvalds/linux/commit/5c17c861a357e9458001f021a7afa7aab9937439
tty: Fix unsafe ldisc reference via ioctl(TIOCGETD) · torvalds/linux@5c17c86 · GitHub
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http://www.securityfocus.com/bid/82950
Linux Kernel CVE-2016-0723 Local Race Condition Vulnerability
-
http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176464.html
[SECURITY] Fedora 23 Update: kernel-4.3.4-300.fc23
-
http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176484.html
[SECURITY] Fedora 22 Update: kernel-4.3.4-200.fc22
-
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5c17c861a357e9458001f021a7afa7aab9937439
kernel/git/torvalds/linux.git - Linux kernel source treeVendor Advisory
-
https://security-tracker.debian.org/tracker/CVE-2016-0723
CVE-2016-0723
-
http://www.ubuntu.com/usn/USN-2930-1
USN-2930-1: Linux kernel vulnerabilities | Ubuntu security notices
-
https://bugzilla.redhat.com/show_bug.cgi?id=1296253
1296253 – (CVE-2016-0723) CVE-2016-0723 kernel: Kernel memory disclosure and crash in tty layer
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http://www.ubuntu.com/usn/USN-2948-2
USN-2948-2: Linux kernel (Utopic HWE) regression | Ubuntu security notices
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http://www.ubuntu.com/usn/USN-2967-1
USN-2967-1: Linux kernel vulnerabilities | Ubuntu security notices
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http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
Oracle Linux Bulletin - July 2016
-
http://source.android.com/security/bulletin/2016-07-01.html
Android Security Bulletin—July 2016 | Android Open Source Project
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