#dos

Debian Linux Security Advisory 5495-1 - Multiple vulnerabilities were discovered in frr, the FRRouting suite of internet protocols, while processing malformed requests and packets the BGP daemon may have reachable assertions, NULL pointer dereference, out-of-bounds memory access, which may lead to denial of service attack.

Ubuntu Security Notice 6357-1 - Daniel Moghimi discovered that some Intel Processors did not properly clear microarchitectural state after speculative execution of various instructions. A local unprivileged user could use this to obtain to sensitive information. Ruihan Li discovered that the bluetooth subsystem in the Linux kernel did not properly perform permissions checks when handling HCI sockets. A physically proximate attacker could use this to cause a denial of service.

Ubuntu Security Notice 6356-1 - Jianjun Chen, Vern Paxson and Jian Jiang discovered that OpenDMARC incorrectly handled certain inputs. If a user or an automated system were tricked into receiving crafted inputs, an attacker could possibly use this to falsify the domain of an e-mails origin. Patrik Lantz discovered that OpenDMARC incorrectly handled certain inputs. If a user or an automated system were tricked into opening a specially crafted input file, a remote attacker could possibly use this issue to cause a denial of service.

A stack based out-of-bounds write flaw was found in the netfilter subsystem in the Linux kernel. If the expression length is a multiple of 4 (register size), the `nft_exthdr_eval` family of functions writes 4 NULL bytes past the end of the `regs` argument, leading to stack corruption and potential information disclosure or a denial of service.

Debian Linux Security Advisory 5494-1 - Several NULL pointer dereference flaws were discovered in Mutt, a text-based mailreader supporting MIME, GPG, PGP and threading, which may result in denial of service (application crash) when viewing a specially crafted email or when composing from a specially crafted draft message.

Ubuntu Security Notice 6338-2 - Zi Fan Tan discovered that the binder IPC implementation in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that a race condition existed in the f2fs file system in the Linux kernel, leading to a null pointer dereference vulnerability. An attacker could use this to construct a malicious f2fs image that, when mounted and operated on, could cause a denial of service.

Debian Linux Security Advisory 5492-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.

Ubuntu Security Notice 6342-2 - Tavis Ormandy discovered that some AMD processors did not properly handle speculative execution of certain vector register instructions. A local attacker could use this to expose sensitive information. Zheng Zhang discovered that the device-mapper implementation in the Linux kernel did not properly handle locking during table_clear operations. A local attacker could use this to cause a denial of service.

A buffer overflow vulnerability in OpenPLC Runtime's webserver version 3 allows attackers to inject malicious code, leading to an internal server error that is irrecoverable. This also disables the ability to add any new slave devices through the "Add Slave Devices" component on the Modbus page of the application.

Ubuntu Security Notice 6339-2 - It was discovered that the NTFS file system implementation in the Linux kernel did not properly validate MFT flags in certain situations. An attacker could use this to construct a malicious NTFS image that, when mounted and operated on, could cause a denial of service. Zi Fan Tan discovered that the binder IPC implementation in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code.