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Ubuntu Security Notice USN-6340-1

Ubuntu Security Notice 6340-1 - 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. 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.

Packet Storm
#vulnerability#web#google#amazon#ubuntu#linux#dos#oracle#perl#aws#ibm
==========================================================================Ubuntu Security Notice USN-6340-1September 05, 2023linux, linux-aws, linux-aws-5.4, linux-gcp, linux-hwe-5.4, linux-ibm,linux-iot, linux-kvm, linux-oracle, linux-oracle-5.4 vulnerabilities==========================================================================A security issue affects these releases of Ubuntu and its derivatives:- Ubuntu 20.04 LTS- Ubuntu 18.04 LTS (Available with Ubuntu Pro)Summary:Several security issues were fixed in the Linux kernel.Software Description:- linux: Linux kernel- linux-aws: Linux kernel for Amazon Web Services (AWS) systems- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems- linux-ibm: Linux kernel for IBM cloud systems- linux-iot: Linux kernel for IoT platforms- linux-kvm: Linux kernel for cloud environments- linux-oracle: Linux kernel for Oracle Cloud systems- linux-aws-5.4: Linux kernel for Amazon Web Services (AWS) systems- linux-hwe-5.4: Linux hardware enablement (HWE) kernel- linux-oracle-5.4: Linux kernel for Oracle Cloud systemsDetails:Ruihan Li discovered that the bluetooth subsystem in the Linux kernel didnot properly perform permissions checks when handling HCI sockets. Aphysically proximate attacker could use this to cause a denial of service(bluetooth communication). (CVE-2023-2002)Zi Fan Tan discovered that the binder IPC implementation in the Linuxkernel contained a use-after-free vulnerability. A local attacker could usethis to cause a denial of service (system crash) or possibly executearbitrary code. (CVE-2023-21255)Juan Jose Lopez Jaimez, Meador Inge, Simon Scannell, and Nenad Stojanovskidiscovered that the BPF verifier in the Linux kernel did not properly markregisters for precision tracking in certain situations, leading to an out-of-bounds access vulnerability. A local attacker could use this to cause adenial of service (system crash) or possibly execute arbitrary code.(CVE-2023-2163)Zheng Zhang discovered that the device-mapper implementation in the Linuxkernel did not properly handle locking during table_clear() operations. Alocal attacker could use this to cause a denial of service (kerneldeadlock). (CVE-2023-2269)It was discovered that the DVB Core driver in the Linux kernel did notproperly handle locking events in certain situations. A local attackercould use this to cause a denial of service (kernel deadlock).(CVE-2023-31084)It was discovered that the kernel->user space relay implementation in theLinux kernel did not properly perform certain buffer calculations, leadingto an out-of-bounds read vulnerability. A local attacker could use this tocause a denial of service (system crash) or expose sensitive information(kernel memory). (CVE-2023-3268)It was discovered that the video4linux driver for Philips based TV cards inthe Linux kernel contained a race condition during device removal, leadingto a use-after-free vulnerability. A physically proximate attacker coulduse this to cause a denial of service (system crash) or possibly executearbitrary code. (CVE-2023-35823)It was discovered that the SDMC DM1105 PCI device driver in the Linuxkernel contained a race condition during device removal, leading to a use-after-free vulnerability. A physically proximate attacker could use this tocause a denial of service (system crash) or possibly execute arbitrarycode. (CVE-2023-35824)It was discovered that the Renesas USB controller driver in the Linuxkernel contained a race condition during device removal, leading to a use-after-free vulnerability. A privileged attacker could use this to cause adenial of service (system crash) or possibly execute arbitrary code.(CVE-2023-35828)Update instructions:The problem can be corrected by updating your system to the followingpackage versions:Ubuntu 20.04 LTS:   linux-image-5.4.0-1021-iot      5.4.0-1021.22   linux-image-5.4.0-1056-ibm      5.4.0-1056.61   linux-image-5.4.0-1098-kvm      5.4.0-1098.104   linux-image-5.4.0-1108-oracle   5.4.0-1108.117   linux-image-5.4.0-1109-aws      5.4.0-1109.118   linux-image-5.4.0-1112-gcp      5.4.0-1112.121   linux-image-5.4.0-162-generic   5.4.0-162.179   linux-image-5.4.0-162-generic-lpae  5.4.0-162.179   linux-image-5.4.0-162-lowlatency  5.4.0-162.179   linux-image-aws-lts-20.04       5.4.0.1109.106   linux-image-gcp-lts-20.04       5.4.0.1112.114   linux-image-generic             5.4.0.162.159   linux-image-generic-lpae        5.4.0.162.159   linux-image-ibm-lts-20.04       5.4.0.1056.85   linux-image-kvm                 5.4.0.1098.93   linux-image-lowlatency          5.4.0.162.159   linux-image-oem                 5.4.0.162.159   linux-image-oem-osp1            5.4.0.162.159   linux-image-oracle-lts-20.04    5.4.0.1108.101   linux-image-virtual             5.4.0.162.159Ubuntu 18.04 LTS (Available with Ubuntu Pro):   linux-image-5.4.0-1108-oracle   5.4.0-1108.117~18.04.1   linux-image-5.4.0-1109-aws      5.4.0-1109.118~18.04.1   linux-image-5.4.0-162-generic   5.4.0-162.179~18.04.1   linux-image-5.4.0-162-lowlatency  5.4.0-162.179~18.04.1   linux-image-aws                 5.4.0.1109.87   linux-image-generic-hwe-18.04   5.4.0.162.179~18.04.129   linux-image-lowlatency-hwe-18.04  5.4.0.162.179~18.04.129   linux-image-oem                 5.4.0.162.179~18.04.129   linux-image-oem-osp1            5.4.0.162.179~18.04.129   linux-image-oracle              5.4.0.1108.117~18.04.80   linux-image-snapdragon-hwe-18.04  5.4.0.162.179~18.04.129   linux-image-virtual-hwe-18.04   5.4.0.162.179~18.04.129After a standard system update you need to reboot your computer to makeall the necessary changes.ATTENTION: Due to an unavoidable ABI change the kernel updates havebeen given a new version number, which requires you to recompile andreinstall all third party kernel modules you might have installed.Unless you manually uninstalled the standard kernel metapackages(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,linux-powerpc), a standard system upgrade will automatically performthis as well.References:   https://ubuntu.com/security/notices/USN-6340-1   CVE-2023-2002, CVE-2023-21255, CVE-2023-2163, CVE-2023-2269,   CVE-2023-31084, CVE-2023-3268, CVE-2023-35823, CVE-2023-35824,   CVE-2023-35828Package Information:   https://launchpad.net/ubuntu/+source/linux/5.4.0-162.179   https://launchpad.net/ubuntu/+source/linux-aws/5.4.0-1109.118   https://launchpad.net/ubuntu/+source/linux-gcp/5.4.0-1112.121   https://launchpad.net/ubuntu/+source/linux-ibm/5.4.0-1056.61   https://launchpad.net/ubuntu/+source/linux-iot/5.4.0-1021.22   https://launchpad.net/ubuntu/+source/linux-kvm/5.4.0-1098.104   https://launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1108.117

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Ubuntu Security Notice USN-6311-1

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Ubuntu Security Notice USN-6311-1

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Ubuntu Security Notice USN-6311-1

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Ubuntu Security Notice USN-6311-1

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Ubuntu Security Notice 6300-1 - William Zhao discovered that the Traffic Control subsystem in the Linux kernel did not properly handle network packet retransmission in certain situations. A local attacker could use this to cause a denial of service. It was discovered that the NTFS file system implementation in the Linux kernel did not properly check buffer indexes in certain situations, leading to an out-of-bounds read vulnerability. A local attacker could possibly use this to expose sensitive information.

Ubuntu Security Notice USN-6300-1

Ubuntu Security Notice 6300-1 - William Zhao discovered that the Traffic Control subsystem in the Linux kernel did not properly handle network packet retransmission in certain situations. A local attacker could use this to cause a denial of service. It was discovered that the NTFS file system implementation in the Linux kernel did not properly check buffer indexes in certain situations, leading to an out-of-bounds read vulnerability. A local attacker could possibly use this to expose sensitive information.

Ubuntu Security Notice USN-6300-1

Ubuntu Security Notice 6300-1 - William Zhao discovered that the Traffic Control subsystem in the Linux kernel did not properly handle network packet retransmission in certain situations. A local attacker could use this to cause a denial of service. It was discovered that the NTFS file system implementation in the Linux kernel did not properly check buffer indexes in certain situations, leading to an out-of-bounds read vulnerability. A local attacker could possibly use this to expose sensitive information.

Ubuntu Security Notice USN-6300-1

Ubuntu Security Notice 6300-1 - William Zhao discovered that the Traffic Control subsystem in the Linux kernel did not properly handle network packet retransmission in certain situations. A local attacker could use this to cause a denial of service. It was discovered that the NTFS file system implementation in the Linux kernel did not properly check buffer indexes in certain situations, leading to an out-of-bounds read vulnerability. A local attacker could possibly use this to expose sensitive information.

Ubuntu Security Notice USN-6283-1

Ubuntu Security Notice 6283-1 - 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. 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.

Ubuntu Security Notice USN-6283-1

Ubuntu Security Notice 6283-1 - 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. 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.

Ubuntu Security Notice USN-6283-1

Ubuntu Security Notice 6283-1 - 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. 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.

Ubuntu Security Notice USN-6283-1

Ubuntu Security Notice 6283-1 - 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. 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.

Ubuntu Security Notice USN-6283-1

Ubuntu Security Notice 6283-1 - 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. 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.

Ubuntu Security Notice USN-6283-1

Ubuntu Security Notice 6283-1 - 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. 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.

Ubuntu Security Notice USN-6254-1

Ubuntu Security Notice 6254-1 - Jordy Zomer and Alexandra Sandulescu discovered that syscalls invoking the do_prlimit function in the Linux kernel did not properly handle speculative execution barriers. A local attacker could use this to expose sensitive information. It was discovered that a race condition existed in the btrfs file system implementation in the Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly expose sensitive information.

Red Hat Security Advisory 2023-4138-01

Red Hat Security Advisory 2023-4138-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Issues addressed include out of bounds access and use-after-free vulnerabilities.

RHSA-2023:4138: Red Hat Security Advisory: kernel-rt security and bug fix update

An update for kernel-rt is now available for Red Hat Enterprise Linux 9.0 Extended Update Support. 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 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-2022-1016: A flaw was found in the Linux kernel in net/netfilter/nf_tables_core.c:nft_do_chain, which can cause a use-after-free. This issue needs to handle 'return' with proper preconditions, as it can lead to a kernel information leak problem caused by a local, unprivileged attacker. * CVE-2022-42703: A memory leak flaw with us...

CVE-2023-21255

In multiple functions of binder.c, there is a possible memory corruption due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

CVE-2023-21256: Android Security Bulletin—July 2023

In SettingsHomepageActivity.java, there is a possible way to launch arbitrary activities via Settings due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is needed for exploitation.

Debian Security Advisory 5448-1

Debian Linux Security Advisory 5448-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.

Debian Security Advisory 5448-1

Debian Linux Security Advisory 5448-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.

Debian Security Advisory 5448-1

Debian Linux Security Advisory 5448-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.

Red Hat Security Advisory 2023-3723-01

Red Hat Security Advisory 2023-3723-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include null pointer, out of bounds access, out of bounds write, privilege escalation, and use-after-free vulnerabilities.

RHSA-2023:3708: Red Hat Security Advisory: kernel-rt security and bug fix update

An update for kernel-rt is now available for Red Hat Enterprise Linux 9. 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 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-2023-2002: A vulnerability was found in the HCI sockets implementation due to a missing capability check in net/bluetooth/hci_sock.c in the Linux Kernel. This flaw allows an attacker to unauthorized execution of management commands, compromising the confidentiality, integrity, and availability of Bluetooth communication. * CVE-2023-2124: An out-of-bounds ...

CVE-2023-35824: [GIT PULL FOR v6.4] Various fixes/enhancements

An issue was discovered in the Linux kernel before 6.3.2. A use-after-free was found in dm1105_remove in drivers/media/pci/dm1105/dm1105.c.

CVE-2023-35828

An issue was discovered in the Linux kernel before 6.3.2. A use-after-free was found in renesas_usb3_remove in drivers/usb/gadget/udc/renesas_usb3.c.

CVE-2023-35828: Fix use after free bug in renesas_usb3_remove due to race condition

An issue was discovered in the Linux kernel before 6.3.2. A use-after-free was found in renesas_usb3_remove in drivers/usb/gadget/udc/renesas_usb3.c.

CVE-2023-3268: fix out-of-bounds access in relay_file_read

An out of bounds (OOB) memory access flaw was found in the Linux kernel in relay_file_read_start_pos in kernel/relay.c in the relayfs. This flaw could allow a local attacker to crash the system or leak kernel internal information.

CVE-2023-2002: security - CVE-2023-2002: Linux Bluetooth: Unauthorized management command execution

A vulnerability was found in the HCI sockets implementation due to a missing capability check in net/bluetooth/hci_sock.c in the Linux Kernel. This flaw allows an attacker to unauthorized execution of management commands, compromising the confidentiality, integrity, and availability of Bluetooth communication.

New Variant of Linux Backdoor BPFDoor Uncovered After Years of Staying Under the Radar

A previously undocumented and mostly undetected variant of a Linux backdoor called BPFDoor has been spotted in the wild, cybersecurity firm Deep Instinct said in a technical report published this week. "BPFDoor retains its reputation as an extremely stealthy and difficult-to-detect malware with this latest iteration," security researchers Shaul Vilkomir-Preisman and Eliran Nissan said. BPFDoor (

CVE-2023-2269: Possible deadlock detected in Linux 6.2.0 in dm_get_inactive_table (dm-ioctl.c)

A denial of service problem was found, due to a possible recursive locking scenario, resulting in a deadlock in table_clear in drivers/md/dm-ioctl.c in the Linux Kernel Device Mapper-Multipathing sub-component.

CVE-2023-31084: BUG: WARNING in dvb_frontend_get_event - Yu Hao

An issue was discovered in drivers/media/dvb-core/dvb_frontend.c in the Linux kernel 6.2. There is a blocking operation when a task is in !TASK_RUNNING. In dvb_frontend_get_event, wait_event_interruptible is called; the condition is dvb_frontend_test_event(fepriv,events). In dvb_frontend_test_event, down(&fepriv->sem) is called. However, wait_event_interruptible would put the process to sleep, and down(&fepriv->sem) may block the process.

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