Linux Kernel 4.11 - eBPF Verifier Log Leaks Lower Half of map Pointer

Linux Kernel 4.11 - eBPF Verifier Log Leaks Lower Half of map Pointer / Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1251 When the eBPF verifier kernel/bpf/verifier.c runs in verbose mode, it dumps all processed instructions to a user-accessible buffer in human-readable form...

Linux Kernel 4.11 - eBPF Verifier Log Leaks Lower Half of map Pointer

/ Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1251 When the eBPF verifier kernel/bpf/verifier.c runs in verbose mode, it dumps all processed instructions to a user-accessible buffer in human-readable form using printbpfinsn. For instructions with class BPFLD and mode BPFIMM,...

Linux BPF doubleput UAF Privilege Escalation

Linux kernel 4.4 'Linux BPF doubleput UAF Privilege Escalation', 'Description' = %q Linux kernel 4.4 4.5.5 extended Berkeley Packet Filter eBPF does not properly reference count file descriptors, resulting in a use-after-free, which can be abused to escalate privileges. The target system must be...

Ubuntu: Security Advisory (USN-3007-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2016 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

USN-3007-1 linux-raspi2 vulnerabilities

Justin Yackoski discovered that the Atheros L2 Ethernet Driver in the Linux kernel incorrectly enables scatter/gather I/O. A remote attacker could use this to obtain potentially sensitive information from kernel memory. CVE-2016-2117 Jann Horn discovered that eCryptfs improperly attempted to use...

USN-3006-1: Linux kernel vulnerabilities

Justin Yackoski discovered that the Atheros L2 Ethernet Driver in the Linux kernel incorrectly enables scatter/gather I/O. A remote attacker could use this to obtain potentially sensitive information from kernel memory. CVE-2016-2117 Jann Horn discovered that eCryptfs improperly attempted to use...

USN-3005-1: Linux kernel (Xenial HWE) vulnerabilities

Justin Yackoski discovered that the Atheros L2 Ethernet Driver in the Linux kernel incorrectly enables scatter/gather I/O. A remote attacker could use this to obtain potentially sensitive information from kernel memory. CVE-2016-2117 Jann Horn discovered that eCryptfs improperly attempted to use...

Ubuntu 16.04 LTS : Linux kernel (Raspberry Pi 2) vulnerabilities (USN-3007-1)

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3007-1 advisory. Justin Yackoski discovered that the Atheros L2 Ethernet Driver in the Linux kernel incorrectly enables scatter/gather I/O. A remote attacker could use th...

Linux kernel security bypass vulnerability (CNVD-2016-03201)

Linux kernel is an open source operating system. A security vulnerability exists in Linux kernel bpf, which allows a local attacker to exploit the vulnerability to execute restricted code to load the eBPF socket filter program using the bpf system call...

Ubuntu 14.04 LTS : Linux kernel (Xenial HWE) vulnerabilities (USN-2965-2)

The remote Ubuntu 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-2965-2 advisory. USN-2965-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enableme...

Ubuntu 16.04 LTS : Linux kernel (Raspberry Pi 2) vulnerabilities (USN-2965-3)

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-2965-3 advisory. Jann Horn discovered that the extended Berkeley Packet Filter eBPF implementation in the Linux kernel did not properly reference count file descriptors,...

USN-2965-4: Linux kernel (Qualcomm Snapdragon) vulnerability

Jann Horn discovered that the extended Berkeley Packet Filter eBPF implementation in the Linux kernel did not properly reference count file descriptors, leading to a use-after-free. A local unprivileged attacker could use this to gain administrative privileges. Ralf Spenneberg discovered that the...

USN-2965-1 linux vulnerabilities

Jann Horn discovered that the extended Berkeley Packet Filter eBPF implementation in the Linux kernel did not properly reference count file descriptors, leading to a use-after-free. A local unprivileged attacker could use this to gain administrative privileges. CVE-2016-4557 Ralf Spenneberg...

Linux Kernel 4.4.x (Ubuntu 16.04) - double-fdput() bpf(BPF_PROG_LOAD) Privilege Escalation

Linux Kernel 4.4.x Ubuntu 16.04 - double-fdput bpfBPFPROGLOAD Privilege Escalation Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=808 In Linux =4.4, when the CONFIGBPFSYSCALL config option is set and the kernel.unprivilegedbpfdisabled sysctl is not explicitly set to 1 at runtim...

Dynamic Tracing Tools for Linux: BCC

BCC – BPF Compiler Collection – is a toolkit for creating efficient kernel tracing and manipulation programs, and includes several useful tools and examples. It makes use of eBPF Extended Berkeley Packet Filters, a new feature that was first added to Linux 3.15. Much of what BCC uses requires Lin...

Ubuntu 15.10 : linux vulnerabilities (USN-2947-1)

Ralf Spenneberg discovered that the usbvision driver in the Linux kernel did not properly sanity check the interfaces and endpoints reported by the device. An attacker with physical access could cause a denial of service system crash. CVE-2015-7833 Venkatesh Pottem discovered a use-after-free...

Ubuntu 15.10 : linux-raspi2 vulnerabilities (USN-2947-3)

Ralf Spenneberg discovered that the usbvision driver in the Linux kernel did not properly sanity check the interfaces and endpoints reported by the device. An attacker with physical access could cause a denial of service system crash. CVE-2015-7833 Venkatesh Pottem discovered a use-after-free...

USN-2947-1: Linux kernel vulnerabilities

Ralf Spenneberg discovered that the usbvision driver in the Linux kernel did not properly validate the interfaces and endpoints reported by the device. An attacker with physical access could cause a denial of service system crash. CVE-2015-7833 Venkatesh Pottem discovered a use-after-free...

Amazon Linux AMI : kernel (ALAS-2016-669)

When running as a Xen 64-bit PV guest, user mode processes not supposed to be able to access I/O ports may be granted such permission, potentially resulting in one or more of in-guest privilege escalation, guest crashes Denial of Service, or in-guest information leaks. CVE-2016-3157 In some cases...