Updated kernel-tmb packages fix security vulnerabilities

This kernel-tmb update is based on the upstream 4.14.78 and adds additional fixes for the L1TF security issues. It also fixes at least the following security issues: Linux kernel from versions 3.9 and up, is vulnerable to a denial of service attack with low rates of specially modified packets...

Updated kernel packages fix security vulnerabilities

This kernel update is based on the upstream 4.14.78 and fixes at least the following security issues: An issue was discovered in the fdlockedioctl function in drivers/block/floppy.c in the Linux kernel through 4.15.7. The floppy driver will copy a kernel pointer to user memory in response to the...

Linux kernel out-of-bounds access vulnerability (CNVD-2018-26908)

Linux kernel is the kernel used by Linux, the open source operating system released by the Linux Foundation in the United States. A security vulnerability exists in the BPF verifier in the Linux kernel, which arises from the program failing to properly compute numeric bounds. An attacker could...

CVE-2018-18445

In the Linux kernel 4.14.x, 4.15.x, 4.16.x, 4.17.x, and 4.18.x before 4.18.13, faulty computation of numeric bounds in the BPF verifier permits out-of-bounds memory accesses because adjustscalarminmaxvals in kernel/bpf/verifier.c mishandles 32-bit right shifts...

DEBIAN-CVE-2018-18445

In the Linux kernel 4.14.x, 4.15.x, 4.16.x, 4.17.x, and 4.18.x before 4.18.13, faulty computation of numeric bounds in the BPF verifier permits out-of-bounds memory accesses because adjustscalarminmaxvals in kernel/bpf/verifier.c mishandles 32-bit right shifts...

CVE-2018-18445

In the Linux kernel 4.14.x, 4.15.x, 4.16.x, 4.17.x, and 4.18.x before 4.18.13, faulty computation of numeric bounds in the BPF verifier permits out-of-bounds memory accesses because adjustscalarminmaxvals in kernel/bpf/verifier.c mishandles 32-bit right shifts...

CVE-2018-18445

CVE-2018-18445 affects the Linux kernel in 4.14.x–4.18.x; prior to 4.18.13, the BPF verifier’s adjust_scalar_min_max_vals mishandles 32-bit right shifts, enabling out-of-bounds memory accesses. Several advisories confirm the issue and reference the fix in 4.18.13 (and backported patches for earli...

CVE-2018-18445

In the Linux kernel 4.14.x, 4.15.x, 4.16.x, 4.17.x, and 4.18.x before 4.18.13, faulty computation of numeric bounds in the BPF verifier permits out-of-bounds memory accesses because adjustscalarminmaxvals in kernel/bpf/verifier.c mishandles 32-bit right shifts...

CVE-2018-18445

In the Linux kernel 4.14.x, 4.15.x, 4.16.x, 4.17.x, and 4.18.x before 4.18.13, faulty computation of numeric bounds in the BPF verifier permits out-of-bounds memory accesses because adjustscalarminmaxvals in kernel/bpf/verifier.c mishandles 32-bit right shifts...

CVE-2018-18445

In the Linux kernel 4.14.x, 4.15.x, 4.16.x, 4.17.x, and 4.18.x before 4.18.13, faulty computation of numeric bounds in the BPF verifier permits out-of-bounds memory accesses because adjustscalarminmaxvals in kernel/bpf/verifier.c mishandles 32-bit right shifts...

UBUNTU-CVE-2018-18445

In the Linux kernel 4.14.x, 4.15.x, 4.16.x, 4.17.x, and 4.18.x before 4.18.13, faulty computation of numeric bounds in the BPF verifier permits out-of-bounds memory accesses because adjustscalarminmaxvals in kernel/bpf/verifier.c mishandles 32-bit right shifts...

OracleVM 3.4 : Unbreakable / etc (OVMSA-2018-0266)

The remote OracleVM system is missing necessary patches to address critical security updates : - bnxten: xdp: don't make drivers report attachment mode partial backport Somasundaram Krishnasamy Orabug: 27988326 - bpf: make bnxt compatible w/ bpfxdpadjusttail Nikita V. Shirokov - bnxten: add meta...

Linux Kernel - Pointer Leak via BPF Exploit

Exploit for linux platform in category dos / poc / Commit 82abbf8d2fc46d79611ab58daa7c608df14bb3ee "bpf: do not allow root to mangle valid pointers", first in v4.15 included the following snippet: ========= @@ -2319,43 +2307,29 @@ static int adjustregminmaxvalsstruct bpfverifierenv env, if...

Linux - Kernel Pointer Leak via BPF

/ Commit 82abbf8d2fc46d79611ab58daa7c608df14bb3ee "bpf: do not allow root to mangle valid pointers", first in v4.15 included the following snippet: ========= @@ -2319,43 +2307,29 @@ static int adjustregminmaxvalsstruct bpfverifierenv env, if srcreg-type != SCALARVALUE if dstreg-type != SCALARVALU...

Linux - Kernel Pointer Leak via BPF

Linux - Kernel Pointer Leak via BPF / Commit 82abbf8d2fc46d79611ab58daa7c608df14bb3ee "bpf: do not allow root to mangle valid pointers", first in v4.15 included the following snippet: ========= @@ -2319,43 +2307,29 @@ static int adjustregminmaxvalsstruct bpfverifierenv env, if srcreg-type !=...

openSUSE Security Update : the Linux Kernel (openSUSE-2018-886) (Foreshadow)

The openSUSE Leap 15.0 kernel was updated to receive various security and bugfixes. The following security bugs were fixed : - CVE-2018-10853: A flaw was found in KVM in which certain instructions such as sgdt/sidt call segmentedwritestd doesn't propagate access correctly. As such, during userspa...

Linux BPF Sign Extension Local Privilege Escalation

This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework class MetasploitModule 'Linux BPF Sign Extension Local Privilege Escalation', 'Description' = %q Linux kernel prior to 4.14.8 utilizes the Berkeley Packet Filter BPF whi...

Linux - BPF Sign Extension Local Privilege Escalation (Metasploit)

This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework class MetasploitModule 'Linux BPF Sign Extension Local Privilege Escalation', 'Description' = %q Linux kernel prior to 4.14.8 utilizes the Berkeley Packet Filter BPF whi...

Linux Kernel < 4.14.8 Sign Extension Local Privilege Escalation Exploit

Linux kernel versions prior to 4.14.8 utilize the Berkeley Packet Filter BPF which contains a vulnerability where it may improperly perform signing for an extension. This can be utilized to escalate privileges. The target system must be compiled with BPF support and must not have...

Linux Kernel < 4.13.9 (Ubuntu 16.04 / Fedora 27) - Local Privilege Escalation

/ Credit @bleidl, this is a slight modification to his original POC https://github.com/brl/grlh/blob/master/get-rekt-linux-hardened.c For details on how the exploit works, please visit https://ricklarabee.blogspot.com/2018/07/ebpf-and-analysis-of-get-rekt-linux.html Tested on Ubuntu 16.04 with th...