#dos

A PV guest could DoS Xen while unmapping a grant To address XSA-380, reference counting was introduced for grant mappings for the case where a PV guest would have the IOMMU enabled. PV guests can request two forms of mappings. When both are in use for any individual mapping, unmapping of such a mapping can be requested in two steps. The reference count for such a mapping would then mistakenly be decremented twice. Underflow of the counters gets detected, resulting in the triggering of a hypervisor bug check.

Insufficient cleanup of passed-through device IRQs The management of IRQs associated with physical devices exposed to x86 HVM guests involves an iterative operation in particular when cleaning up after the guest's use of the device. In the case where an interrupt is not quiescent yet at the time this cleanup gets invoked, the cleanup attempt may be scheduled to be retried. When multiple interrupts are involved, this scheduling of a retry may get erroneously skipped. At the same time pointers may get cleared (resulting in a de-reference of NULL) and freed (resulting in a use-after-free), while other code would continue to assume them to be valid.

In LibreCAD 2.2.0, a NULL pointer dereference in the HATCH handling of libdxfrw allows an attacker to crash the application using a crafted DXF document.

In LibreCAD 2.2.0, a NULL pointer dereference in the HATCH handling of libdxfrw allows an attacker to crash the application using a crafted DXF document.

In Libsixel prior to and including v1.10.3, a NULL pointer dereference in the stb_image.h component of libsixel allows attackers to cause a denial of service (DOS) via a crafted PICT file.

An update for the nodejs:14 module is now available for Red Hat Enterprise Linux 8.4 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2020-7788: nodejs-ini: Prototype pollution via malicious INI file * CVE-2020-28469: nodejs-glob-parent: Regular expression denial of service * CVE-2021-3807: nodejs-ansi-regex: Regular expression denial of service (ReDoS) matching ANSI escape codes * CVE-2021-3918: nodejs-json-schema: Prototype pollution vulnerability *...

Jsish v3.5.0 was discovered to contain a heap buffer overflow via jsiValueObjDelete in src/jsiEval.c. This vulnerability can lead to a Denial of Service (DoS).

Jsish v3.5.0 was discovered to contain a heap buffer overflow via RegExp_constructor in src/jsiRegexp.c. This vulnerability can lead to a Denial of Service (DoS).

Jsish v3.5.0 was discovered to contain a heap buffer overflow via jsi_ArraySliceCmd in src/jsiArray.c. This vulnerability can lead to a Denial of Service (DoS).

Jsish v3.5.0 was discovered to contain a heap buffer overflow via jsiClearStack in src/jsiEval.c. This vulnerability can lead to a Denial of Service (DoS).