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CVE-2015-7872

Status Candidate

Overview

The key_gc_unused_keys function in security/keys/gc.c in the Linux kernel through 4.2.6 allows local users to cause a denial of service (OOPS) via crafted keyctl commands.

Related Files

HP Security Bulletin HPSBGN03565 1
Posted Apr 4, 2016
Authored by HP | Site hp.com

HP Security Bulletin HPSBGN03565 1 - A vulnerability in the Linux kernel was addressed by HPE Virtualization Performance Viewer. The vulnerability could be exploited locally to allow Denial of Service (DoS). Revision 1 of this advisory.

tags | advisory, denial of service, kernel
systems | linux
advisories | CVE-2015-7872
MD5 | dd28e432cf998026fdf95fdf51f4082b
Red Hat Security Advisory 2016-0224-01
Posted Feb 16, 2016
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2016-0224-01 - The kernel-rt packages contain the Linux kernel, the core of any Linux operating system. It was found that the Linux kernel's keys subsystem did not correctly garbage collect uninstantiated keyrings. A local attacker could use this flaw to crash the system or, potentially, escalate their privileges on the system. A flaw was found in the way the Linux kernel handled IRET faults during the processing of NMIs. An unprivileged, local user could use this flaw to crash the system or, potentially, escalate their privileges on the system.

tags | advisory, kernel, local
systems | linux, redhat
advisories | CVE-2015-5157, CVE-2015-7872
MD5 | 68faa760903d8f09f4be99665b215874
Red Hat Security Advisory 2016-0212-01
Posted Feb 16, 2016
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2016-0212-01 - The kernel-rt packages contain the Linux kernel, the core of any Linux operating system. It was found that the Linux kernel's keys subsystem did not correctly garbage collect uninstantiated keyrings. A local attacker could use this flaw to crash the system or, potentially, escalate their privileges on the system. A flaw was found in the way the Linux kernel handled IRET faults during the processing of NMIs. An unprivileged, local user could use this flaw to crash the system or, potentially, escalate their privileges on the system.

tags | advisory, kernel, local
systems | linux, redhat
advisories | CVE-2015-5157, CVE-2015-7872
MD5 | 92f60b73f2dfa6b475db755d49a3e33d
Red Hat Security Advisory 2016-0185-01
Posted Feb 16, 2016
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2016-0185-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. It was found that the Linux kernel's keys subsystem did not correctly garbage collect uninstantiated keyrings. A local attacker could use this flaw to crash the system or, potentially, escalate their privileges on the system. A flaw was found in the way the Linux kernel handled IRET faults during the processing of NMIs. An unprivileged, local user could use this flaw to crash the system or, potentially, escalate their privileges on the system.

tags | advisory, kernel, local
systems | linux, redhat
advisories | CVE-2015-5157, CVE-2015-7872
MD5 | faa47c4243c9791a8e4d98ce960cad1a
Ubuntu Security Notice USN-2840-2
Posted Dec 17, 2015
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2840-2 - Dmitry Vyukov discovered that the Linux kernel's keyring handler attempted to garbage collect incompletely instantiated keys. A local unprivileged attacker could use this to cause a denial of service (system crash).

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2015-7872
MD5 | e4694cf15f8f391f0076fb969da04709
Ubuntu Security Notice USN-2843-3
Posted Dec 17, 2015
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2843-3 - =E9=83=AD=E6=B0=B8=E5=88=9A discovered that the ppp implementation in the Linux kernel did not ensure that certain slot numbers are valid. A local attacker with the privilege to call ioctl() on /dev/ppp could cause a denial of service (system crash). Dmitry Vyukov discovered that the Linux kernel's keyring handler attempted to garbage collect incompletely instantiated keys. A local unprivileged attacker could use this to cause a denial of service (system crash). Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2015-7799, CVE-2015-7872, CVE-2015-7884, CVE-2015-7885
MD5 | 11a5b485f285216e76344613a24ca9fe
Ubuntu Security Notice USN-2843-2
Posted Dec 17, 2015
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2843-2 - Jan Beulich discovered that the KVM svm hypervisor implementation in the Linux kernel did not properly catch Debug exceptions on AMD processors. An attacker in a guest virtual machine could use this to cause a denial of service (system crash) in the host OS. It was discovered that the ppp implementation in the Linux kernel did not ensure that certain slot numbers are valid. A local attacker with the privilege to call ioctl() on /dev/ppp could cause a denial of service (system crash). Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2015-7799, CVE-2015-7872, CVE-2015-7884, CVE-2015-7885, CVE-2015-8104
MD5 | 5ef086dfacfeec593fa933b5f7aec168
Ubuntu Security Notice USN-2843-1
Posted Dec 17, 2015
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2843-1 - Jan Beulich discovered that the KVM svm hypervisor implementation in the Linux kernel did not properly catch Debug exceptions on AMD processors. An attacker in a guest virtual machine could use this to cause a denial of service (system crash) in the host OS. It was discovered that the ppp implementation in the Linux kernel did not ensure that certain slot numbers are valid. A local attacker with the privilege to call ioctl() on /dev/ppp could cause a denial of service (system crash). Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2015-7799, CVE-2015-7872, CVE-2015-7884, CVE-2015-7885, CVE-2015-8104
MD5 | 870916dc3fa8e85881a9666ec2c8e865
Ubuntu Security Notice USN-2840-1
Posted Dec 17, 2015
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2840-1 - Dmitry Vyukov discovered that the Linux kernel's keyring handler attempted to garbage collect incompletely instantiated keys. A local unprivileged attacker could use this to cause a denial of service (system crash). Jan Beulich discovered that the KVM svm hypervisor implementation in the Linux kernel did not properly catch Debug exceptions on AMD processors. An attacker in a guest virtual machine could use this to cause a denial of service (system crash) in the host OS. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2015-7872, CVE-2015-8104
MD5 | 051f5e489cda893a7a62af2acf2c4175
Red Hat Security Advisory 2015-2636-01
Posted Dec 16, 2015
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2015-2636-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. A flaw was found in the way the Linux kernel's file system implementation handled rename operations in which the source was inside and the destination was outside of a bind mount. A privileged user inside a container could use this flaw to escape the bind mount and, potentially, escalate their privileges on the system. It was found that the x86 ISA is prone to a denial of service attack inside a virtualized environment in the form of an infinite loop in the microcode due to the way delivering of benign exceptions such as #AC and #DB is handled. A privileged user inside a guest could use these flaws to create denial of service conditions on the host kernel.

tags | advisory, denial of service, x86, kernel
systems | linux, redhat
advisories | CVE-2015-2925, CVE-2015-5307, CVE-2015-7613, CVE-2015-7872, CVE-2015-8104
MD5 | 3774cc91e9250b3134a34b569b444a3c
Ubuntu Security Notice USN-2829-2
Posted Dec 4, 2015
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2829-2 - It was discovered that the SCTP protocol implementation in the Linux kernel performed an incorrect sequence of protocol-initialization steps. A local attacker could use this to cause a denial of service (system crash). Dmitry Vyukov discovered that the Linux kernel's keyring handler attempted to garbage collect incompletely instantiated keys. A local unprivileged attacker could use this to cause a denial of service (system crash). Various other issues were also addressed.

tags | advisory, denial of service, kernel, local, protocol
systems | linux, ubuntu
advisories | CVE-2015-5283, CVE-2015-7872
MD5 | a85f4126d4f341bb08b7b1453fe8a5c7
Ubuntu Security Notice USN-2829-1
Posted Dec 4, 2015
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2829-1 - It was discovered that the SCTP protocol implementation in the Linux kernel performed an incorrect sequence of protocol-initialization steps. A local attacker could use this to cause a denial of service (system crash). Dmitry Vyukov discovered that the Linux kernel's keyring handler attempted to garbage collect incompletely instantiated keys. A local unprivileged attacker could use this to cause a denial of service (system crash). Various other issues were also addressed.

tags | advisory, denial of service, kernel, local, protocol
systems | linux, ubuntu
advisories | CVE-2015-5283, CVE-2015-7872
MD5 | efcd6fb8a8b944e83c7e686aaff55a3c
Ubuntu Security Notice USN-2826-1
Posted Dec 3, 2015
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2826-1 - It was discovered that the SCTP protocol implementation in the Linux kernel performed an incorrect sequence of protocol-initialization steps. A local attacker could use this to cause a denial of service (system crash). Dmitry Vyukov discovered that the Linux kernel's keyring handler attempted to garbage collect incompletely instantiated keys. A local unprivileged attacker could use this to cause a denial of service (system crash). Various other issues were also addressed.

tags | advisory, denial of service, kernel, local, protocol
systems | linux, ubuntu
advisories | CVE-2015-5283, CVE-2015-7872
MD5 | 7c18a32b11105e93942f2bfd8fdce219
Ubuntu Security Notice USN-2824-1
Posted Dec 2, 2015
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2824-1 - Dmitry Vyukov discovered that the Linux kernel's keyring handler attempted to garbage collect incompletely instantiated keys. A local unprivileged attacker could use this to cause a denial of service (system crash).

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2015-7872
MD5 | 444f24c57a29102dcfa052551ca5f333
Ubuntu Security Notice USN-2823-1
Posted Dec 1, 2015
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2823-1 - It was discovered that the SCTP protocol implementation in the Linux kernel performed an incorrect sequence of protocol-initialization steps. A local attacker could use this to cause a denial of service (system crash). Dmitry Vyukov discovered that the Linux kernel's keyring handler attempted to garbage collect incompletely instantiated keys. A local unprivileged attacker could use this to cause a denial of service (system crash). Various other issues were also addressed.

tags | advisory, denial of service, kernel, local, protocol
systems | linux, ubuntu
advisories | CVE-2015-5283, CVE-2015-7872
MD5 | efc2842fd3b0d8b8a08423636ce8db54
Debian Security Advisory 3396-1
Posted Nov 10, 2015
Authored by Debian | Site debian.org

Debian Linux Security Advisory 3396-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service.

tags | advisory, denial of service, kernel, vulnerability
systems | linux, debian
advisories | CVE-2015-5307, CVE-2015-7833, CVE-2015-7872, CVE-2015-7990
MD5 | a0d9da49ab890fec92b2148a5f69856f
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