The keyctl_read_key function in security/keys/keyctl.c in the Linux kernel before 4.3.4 does not properly use a semaphore, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted application that leverages a race condition between keyctl_revoke and keyctl_read calls.
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.html
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html
http://www.debian.org/security/2016/dsa-3434
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.4
http://www.securityfocus.com/bid/79903
http://www.ubuntu.com/usn/USN-2888-1
http://www.ubuntu.com/usn/USN-2890-1
http://www.ubuntu.com/usn/USN-2890-2
http://www.ubuntu.com/usn/USN-2890-3
http://www.ubuntu.com/usn/USN-2911-1
http://www.ubuntu.com/usn/USN-2911-2
https://bugzilla.redhat.com/show_bug.cgi?id=1291197
https://github.com/torvalds/linux/commit/b4a1b4f5047e4f54e194681125c74c0aa64d637d
Source: MITRE
Published: 2016-02-08
Updated: 2017-11-04
Type: CWE-362
Base Score: 4.9
Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C
Impact Score: 6.9
Exploitability Score: 3.9
Severity: MEDIUM
Base Score: 5.5
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Impact Score: 3.6
Exploitability Score: 1.8
Severity: MEDIUM
OR
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to 4.3.3 (inclusive)
ID | Name | Product | Family | Severity |
---|---|---|---|---|
127146 | NewStart CGSL MAIN 5.04 : kernel Multiple Vulnerabilities (NS-SA-2019-0004) | Nessus | NewStart CGSL Local Security Checks | critical |
124973 | EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1520) | Nessus | Huawei Local Security Checks | high |
124812 | EulerOS Virtualization 3.0.1.0 : kernel (EulerOS-SA-2019-1488) | Nessus | Huawei Local Security Checks | high |
93289 | SUSE SLES11 Security Update : kernel (SUSE-SU-2016:2074-1) | Nessus | SuSE Local Security Checks | critical |
90884 | SUSE SLES11 Security Update : kernel (SUSE-SU-2016:1203-1) | Nessus | SuSE Local Security Checks | critical |
90264 | SUSE SLED11 / SLES11 Security Update : kernel (SUSE-SU-2016:0911-1) | Nessus | SuSE Local Security Checks | critical |
89400 | Fedora 23 : kernel-4.2.8-300.fc23 (2015-c59710b05d) | Nessus | Fedora Local Security Checks | medium |
89393 | Fedora 22 : kernel-4.2.8-200.fc22 (2015-c1c2f5e168) | Nessus | Fedora Local Security Checks | medium |
89026 | Ubuntu 14.04 LTS : linux-lts-vivid regression (USN-2910-2) | Nessus | Ubuntu Local Security Checks | high |
89022 | SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2016:0585-1) | Nessus | SuSE Local Security Checks | high |
88902 | Ubuntu 12.04 LTS : linux vulnerability (USN-2911-1) | Nessus | Ubuntu Local Security Checks | medium |
88901 | Ubuntu 14.04 LTS : linux-lts-vivid vulnerabilities (USN-2910-1) | Nessus | Ubuntu Local Security Checks | high |
88896 | Ubuntu 12.04 LTS : linux-lts-trusty vulnerabilities (USN-2907-2) | Nessus | Ubuntu Local Security Checks | high |
88895 | Ubuntu 14.04 LTS : linux vulnerabilities (USN-2907-1) | Nessus | Ubuntu Local Security Checks | high |
88605 | openSUSE Security Update : the Linux Kernel (openSUSE-2016-136) | Nessus | SuSE Local Security Checks | high |
88545 | openSUSE Security Update : the Linux Kernel (openSUSE-2016-124) | Nessus | SuSE Local Security Checks | critical |
88542 | openSUSE Security Update : the Linux Kernel (openSUSE-2016-116) | Nessus | SuSE Local Security Checks | high |
88526 | Ubuntu 15.10 : linux-raspi2 vulnerabilities (USN-2890-3) | Nessus | Ubuntu Local Security Checks | critical |
88525 | Ubuntu 14.04 LTS : linux-lts-wily vulnerabilities (USN-2890-2) | Nessus | Ubuntu Local Security Checks | critical |
88524 | Ubuntu 15.10 : linux vulnerabilities (USN-2890-1) | Nessus | Ubuntu Local Security Checks | critical |
88521 | Ubuntu 14.04 LTS : linux-lts-utopic vulnerabilities (USN-2888-1) | Nessus | Ubuntu Local Security Checks | medium |
88006 | SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2016:0168-1) | Nessus | SuSE Local Security Checks | high |
87741 | Debian DSA-3434-1 : linux - security update | Nessus | Debian Local Security Checks | medium |
87738 | Debian DLA-378-1 : linux-2.6 security update | Nessus | Debian Local Security Checks | medium |