DEBIAN-CVE-2021-26930

An issue was discovered in the Linux kernel 3.11 through 5.10.16, as used by Xen. To service requests to the PV backend, the driver maps grant references provided by the frontend. In this process, errors may be encountered. In one case, an error encountered earlier might be discarded by later...

CVE-2021-26930

An issue was discovered in the Linux kernel 3.11 through 5.10.16, as used by Xen. To service requests to the PV backend, the driver maps grant references provided by the frontend. In this process, errors may be encountered. In one case, an error encountered earlier might be discarded by later...

Code injection

An issue was discovered in the Linux kernel 3.11 through 5.10.16, as used by Xen. To service requests to the PV backend, the driver maps grant references provided by the frontend. In this process, errors may be encountered. In one case, an error encountered earlier might be discarded by later...

CVE-2021-26932

CVE-2021-26932 affects Linux kernels 3.2 through 5.10.16 when used with Xen PV backends. The issue arises in grant-mapping error handling during batch hypercalls, where errors can be ignored or misreported, causing improper unmapping and potential downstream impact. Affected components include ar...

CVE-2021-26932

An issue was discovered in the Linux kernel 3.2 through 5.10.16, as used by Xen. Grant mapping operations often occur in batch hypercalls, where a number of operations are done in a single hypercall, the success or failure of each one is reported to the backend driver, and the backend driver then...

CVE-2021-26930

An issue was discovered in the Linux kernel 3.11 through 5.10.16, as used by Xen. To service requests to the PV backend, the driver maps grant references provided by the frontend. In this process, errors may be encountered. In one case, an error encountered earlier might be discarded by later...

CVE-2021-26932

An issue was discovered in the Linux kernel 3.2 through 5.10.16, as used by Xen. Grant mapping operations often occur in batch hypercalls, where a number of operations are done in a single hypercall, the success or failure of each one is reported to the backend driver, and the backend driver then...

CVE-2021-26932

An issue was discovered in the Linux kernel 3.2 through 5.10.16, as used by Xen. Grant mapping operations often occur in batch hypercalls, where a number of operations are done in a single hypercall, the success or failure of each one is reported to the backend driver, and the backend driver then...

Linux: backends treating grant mapping errors as bugs

ISSUE DESCRIPTION Block, net, and SCSI backends consider certain errors a plain bug, deliberately causing a kernel crash. For errors potentially being at least under the influence of guests, like out of memory conditions, it isn't correct to assume so. Memory allocations potentially causing such...

Linux: grant mapping error handling issues

ISSUE DESCRIPTION Grant mapping operations often occur in batch hypercalls, where a number of operations are done in a single hypercall, the success or failure of each one reported to the backend driver, and the backend driver then loops over the results, performing follow-up actions based on the...

Linux: error handling issues in blkback's grant mapping

ISSUE DESCRIPTION To service requests, the driver maps grant references provided by the frontend. In this process, errors may be encountered. In one case an error encountered earlier might be discarded by later processing, resulting in the caller assuming successful mapping, and hence subsequent...

Managed Switch Port Mapping Tool 2.85.2 Denial Of Service

Exploit Title: Managed Switch Port Mapping Tool 2.85.2 - Denial of Service PoC Date: 2021-02-15 Exploit Author: Ismael Nava Vendor Homepage: https://switchportmapper.com/ Software Link: https://switchportmapper.com/download.htm Version: 2.85.2 Tested on: Windows 10 Home x64 STEPS Open the program...

Managed Switch Port Mapping Tool 2.85.2 - Denial of Service (PoC)

Exploit Title: Managed Switch Port Mapping Tool 2.85.2 - Denial of Service PoC Date: 2021-02-15 Exploit Author: Ismael Nava Vendor Homepage: https://switchportmapper.com/ Software Link: https://switchportmapper.com/download.htm Version: 2.85.2 Tested on: Windows 10 Home x64 STEPS Open the program...

Managed Switch Port Mapping Tool 2.85.2 - Denial of Service Exploit

Exploit Title: Managed Switch Port Mapping Tool 2.85.2 - Denial of Service PoC Exploit Author: Ismael Nava Vendor Homepage: https://switchportmapper.com/ Software Link: https://switchportmapper.com/download.htm Version: 2.85.2 Tested on: Windows 10 Home x64 STEPS Open the program Managed Switch...

PT-2021-3000 · Linux +5 · Linux Kernel +5

Name of the Vulnerable Software and Affected Versions: Linux kernel versions 3.11 through 5.10.16 Description: The issue is related to errors in mapping grant references provided by the frontend in the Linux kernel's Xen driver. This can lead to the caller assuming successful mapping and attempti...

PT-2021-3001 · Linux +4 · Linux Kernel +4

Name of the Vulnerable Software and Affected Versions: Linux kernel versions 3.2 through 5.10.16 Description: An issue was discovered in the Linux kernel, as used by Xen, where grant mapping operations in batch hypercalls are mishandled by Linux backend drivers when running in PV mode. This can...

Incorporating machine learning in data mapping for improved results

By Owais Sultan Data mapping is a process in which different bits of data are organized into a manageable as well as easy-to-comprehend system. This is a post from HackRead.com Read the original post: Incorporating machine learning in data mapping for improved results...

Qualcomm Graphics Access Control Error Vulnerability

Qualcomm Graphics is a Qualcomm graphics support firmware for use on processors. A security vulnerability exists in Qualcomm Graphics that stems from the use of mmap, where the kgsl driver has a special offset value that can be supplied to map the GPU memstore to user space...

Red Hat Keycloak 访问控制错误漏洞

Red Hat Keycloak is a suite of software from Red Hat, Inc. that provides authentication and management capabilities for modern applications and services. An access control error vulnerability exists in Red Hat Keycloak before version 13.0.0, which originates from a user being able to access...

Recon Simplified with Spyse

One of the major struggles in bug bounty hunting is to collect and analyze data during reconnaissance, especially when there are a lot of tools around but very few that offer actually useful results. The job of eliminating false positives and unrelated data from your recon becomes harder as the...