Ubuntu: Security Advisory (USN-6130-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2023 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-6131-1: Linux kernel vulnerabilities

Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in the netfilter subsystem of the Linux kernel when processing batch requests, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service system crash or possibly execute arbitrar...

Important: Red Hat Security Advisory: kernel security and bug fix update

An update for kernel is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from th...

Important: Red Hat Security Advisory: kernel-rt security and bug fix update

An update for kernel-rt is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from...

Important: kernel-rt security and bug fix update

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fixes: kernel: netfilter: use-after-free in nftables when processing batch requests can lead to privilege escalation CVE-2023-32233 For more...

Important: kernel security and bug fix update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: netfilter: use-after-free in nftables when processing batch requests can lead to privilege escalation CVE-2023-32233 For more details about the security issues, including the impact, a CV...

ALSA-2023:3349 Important: kernel security and bug fix update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: netfilter: use-after-free in nftables when processing batch requests can lead to privilege escalation CVE-2023-32233 For more details about the security issues, including the impact, a CV...

ALSA-2023:3350 Important: kernel-rt security and bug fix update

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fixes: kernel: netfilter: use-after-free in nftables when processing batch requests can lead to privilege escalation CVE-2023-32233 For more...

Minas – on the way to complexity

Sometimes when investigating an infection and focusing on a targeted attack, we come across something we were not expecting. The case described below is one such occurrence. In June 2022, we found a suspicious shellcode running in the memory of a system process. We decided to dig deeper and...

kernel: slab-out-of-bounds read vulnerabilities in cbq_classify

An out-of-bounds OOB read problem was found in cbqclassify in net/sched/schcbq.c in the Linux kernel. This issue may allow a local attacker to cause a denial of service due to type confusion. Non-negative numbers could indicate a TCACTSHOT condition rather than valid classification results...

Medium: kernel

Issue Overview: bpf: incorrect verifier pruning due to missing register precision taints, which may lead to out-of-band read/write access due to an incorrect verifier conclusion. CVE-2023-2163 A use-after-free vulnerability was found in the Linux kernel's ext4 filesystem in the way it handled the...

Debian: Security Advisory (DSA-5402-1)

The remote host is missing an update for the Debian SPDX-FileCopyrightText: 2023 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...

OESA-2023-1277 kernel security update

The Linux Kernel, the operating system core itself. Security Fixes: The specific flaw exists within the DPT I2O Controller driver. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this in conjunction with other vulnerabilities to...

kernel: NULL pointer dereference in traffic control subsystem

A NULL pointer dereference flaw was found in qdiscgraft in net/sched/schapi.c in the Linux kernel. This issue may allow a local unprivileged user to trigger a denial of service if the allocworkqueue function return is not validated in time of failure, resulting in a system crash or leaked interna...

kernel: highmem: fix checks in __kmap_local_sched_{in,out}

In the Linux kernel, the following vulnerability has been resolved: highmem: fix checks in kmaplocalschedin,out When CONFIGDEBUGKMAPLOCAL is enabled kmaplocalschedin,out check that even slots in the tsk-kmapctrl.pteval are unmapped. The slots are initialized with 0 value, but the check is done wi...

kernel: net/sched: sch_taprio: fix possible use-after-free

In the Linux kernel, the following vulnerability has been resolved: net/sched: schtaprio: fix possible use-after-free syzbot reported a nasty crash 1 in nettxaction which made little sense until we got a repro. This repro installs a taprio qdisc, but providing an invalid TCARATE attribute...

Kernel: NULL pointer dereference problem in sctp_sched_dequeue_common

A NULL pointer dereference issue was found in the SCTP network protocol in net/sctp/streamsched.c in the Linux kernel. If streamin allocation fails, streamout is freed, which would be accessed further. This flaw allows a local user to crash the system or potentially cause a denial of service...

Fuzztruction - Prototype Of A Fuzzer That Does Not Directly Mutate Inputs (As Most Fuzzers Do) But Instead Uses A So-Called Generator Application To Produce An Input For Our Fuzzing Target

Fuzztruction is an academic prototype of a fuzzer that does not directly mutate inputs as most fuzzers do but instead uses a so-called generator application to produce an input for our fuzzing target. As programs generating data usually produce the correct representation, our fuzzer mutates the...

SUSE CVE-2023-31436

qfqchangeclass in net/sched/schqfq.c in the Linux kernel before 6.2.13 allows an out-of-bounds write because lmax can exceed QFQMINLMAX...

Security Bulletin: IBM Workload Scheduler potentially affected by a vulnerability in Apache Commons FileUpload (CVE-2023-24998)

Summary IBM Workload Scheduler is potentially affected by a vulnerability found in Apache Commons FileUpload that can cause a DoS attack. Vulnerability Details CVEID:CVE-2023-24998 DESCRIPTION: Apache Commons FileUpload and Tomcat are vulnerable to a denial of service, caused by not limit the...