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CVE-2015-7799

Status Candidate

Overview

The slhc_init function in drivers/net/slip/slhc.c in the Linux kernel through 4.2.3 does not ensure that certain slot numbers are valid, which allows local users to cause a denial of service (NULL pointer dereference and system crash) via a crafted PPPIOCSMAXCID ioctl call.

Related Files

Ubuntu Security Notice USN-2886-1
Posted Feb 2, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2886-1 - It was discovered that a use-after-free vulnerability existed in the AF_UNIX implementation in the Linux kernel. A local attacker could use crafted epoll_ctl calls to cause a denial of service (system crash) or expose sensitive information. It was discovered that the KVM implementation in the Linux kernel did not properly restore the values of the Programmable Interrupt Timer (PIT). A user-assisted attacker in a KVM guest could cause a denial of service in the host (system crash). Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2013-7446, CVE-2015-7513, CVE-2015-7799, CVE-2015-7990, CVE-2015-8374, CVE-2015-8543, CVE-2015-8569, CVE-2015-8575, CVE-2015-8785
SHA-256 | 24d6d7ae8c64e0028b98928f5ea1fa07cc6257b83053299993d4ac0a54e5d3e1
Ubuntu Security Notice USN-2886-2
Posted Feb 2, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2886-2 - It was discovered that a use-after-free vulnerability existed in the AF_UNIX implementation in the Linux kernel. A local attacker could use crafted epoll_ctl calls to cause a denial of service (system crash) or expose sensitive information. It was discovered that the KVM implementation in the Linux kernel did not properly restore the values of the Programmable Interrupt Timer (PIT). A user-assisted attacker in a KVM guest could cause a denial of service in the host (system crash). Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2013-7446, CVE-2015-7513, CVE-2015-7799, CVE-2015-7990, CVE-2015-8374, CVE-2015-8543, CVE-2015-8550, CVE-2015-8569, CVE-2015-8575, CVE-2015-8785
SHA-256 | f224ae824b3b14b9ca929cf40a2e3f6f5db08bd558114527506befeea164e26a
Debian Security Advisory 3426-1
Posted Dec 18, 2015
Authored by Debian | Site debian.org

Debian Linux Security Advisory 3426-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service, information leak or data loss.

tags | advisory, denial of service, kernel, vulnerability
systems | linux, debian
advisories | CVE-2013-7446, CVE-2015-7799, CVE-2015-7833, CVE-2015-8104, CVE-2015-8374, CVE-2015-8543
SHA-256 | eefa8528c8f76d273a5ac0c5e68a8ee3b0c177db643785311de84b9e1b210774
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
SHA-256 | 49334a6b730ea953bb24db7899076e4caa9a090dbe9937e4c72b50efb8cce3a4
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
SHA-256 | c5e55d2c73f862fc096ea1440ff05f9e135387c9eb19edd0e68e6a85dc021481
Ubuntu Security Notice USN-2844-1
Posted Dec 17, 2015
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2844-1 - 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-2015-7885, CVE-2015-8104
SHA-256 | b4cd0bc253990e55a6ecc2c204566cda6ed9cd5f6cf7e24e01d7c2684add877f
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
SHA-256 | f479df664dd8312e1d62280d98193f75f0d711e3ff7b1a9290dd88a9b27a19bc
Ubuntu Security Notice USN-2842-2
Posted Dec 17, 2015
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2842-2 - 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-2015-7884, CVE-2015-7885, CVE-2015-8104
SHA-256 | a5afc6600211fee4092359c7676a6587ef99dbb6b0927cfbf42276bdf656c3e8
Ubuntu Security Notice USN-2842-1
Posted Dec 17, 2015
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2842-1 - 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-2015-7884, CVE-2015-7885, CVE-2015-8104
SHA-256 | f15c2f33f4786bc4f7ee04869838e57eaef6dac30e29cec3994dd7170aca39f8
Ubuntu Security Notice USN-2841-2
Posted Dec 17, 2015
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2841-2 - 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-2015-7885, CVE-2015-8104
SHA-256 | aab7b8a18a2eeea06d3bd68e70d7384b8208fa178992a4e636bcea7bb44436e4
Ubuntu Security Notice USN-2841-1
Posted Dec 17, 2015
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2841-1 - 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-2015-7885, CVE-2015-8104
SHA-256 | feea045271b1b06eb4f378183ee7bc3c161927c90e23d465be242578c3050baa
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