Ubuntu: Security Advisory (USN-6444-1)

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...

Ubuntu 20.04 LTS : Linux kernel (BlueField) vulnerabilities (USN-6442-1)

The remote Ubuntu 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6442-1 advisory. Ross Lagerwall discovered that the Xen netback backend driver in the Linux kernel did not properly handle certain unusual packets from a paravirtualized...

Ubuntu 16.04 ESM : Linux kernel vulnerabilities (USN-6439-1)

The remote Ubuntu 16.04 ESM host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6439-1 advisory. It was discovered that the IPv6 implementation in the Linux kernel contained a high rate of hash collisions in connection lookup table. A remote attacker...

Ubuntu: Security Advisory (USN-6439-1)

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-6444-1: Linux kernel vulnerabilities

Ross Lagerwall discovered that the Xen netback backend driver in the Linux kernel did not properly handle certain unusual packets from a paravirtualized network frontend, leading to a buffer overflow. An attacker in a guest VM could use this to cause a denial of service host system crash or...

CLSA-2023-1697744819 Fix of 8 CVEs

CVE-url: https://ubuntu.com/security/CVE-2023-42755 - net/sched: Retire rsvp classifier CVE-url: https://ubuntu.com/security/CVE-2023-39194 - net: xfrm: Fix xfrmaddressfilter OOB read CVE-url: https://ubuntu.com/security/CVE-2023-39192 - netfilter: xtu32: validate user space input CVE-url:...

CLSA-2023-1697744683 Fix of 8 CVEs

CVE-url: https://ubuntu.com/security/CVE-2023-42755 - net/sched: Retire rsvp classifier CVE-url: https://ubuntu.com/security/CVE-2023-39194 - net: xfrm: Fix xfrmaddressfilter OOB read CVE-url: https://ubuntu.com/security/CVE-2023-39192 - netfilter: xtu32: validate user space input CVE-url:...

kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route

This record is a duplicate of CVE-2023-4206, CVE-2023-4207, and CVE-2023-4208. Do not use this CVE record: CVE-2023-4128...

kernel: net/sched: cls_fw component can be exploited as result of failure in tcf_change_indev function

A use-after-free vulnerability was found in fwsetparms in net/sched/clsfw.c in network scheduler sub-component in the Linux Kernel. This issue occurs due to a missing sanity check during cleanup at the time of failure, leading to a misleading reference. This may allow a local attacker to gain loc...

USN-6396-3: Linux kernel (Azure) vulnerabilities

It was discovered that some AMD x86-64 processors with SMT enabled could speculatively execute instructions using a return address from a sibling thread. A local attacker could possibly use this to expose sensitive information. CVE-2022-27672 Daniel Moghimi discovered that some IntelR Processors...

USN-6396-3 linux-azure vulnerabilities

It was discovered that some AMD x86-64 processors with SMT enabled could speculatively execute instructions using a return address from a sibling thread. A local attacker could possibly use this to expose sensitive information. CVE-2022-27672 Daniel Moghimi discovered that some IntelR Processors...

kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route

This record is a duplicate of CVE-2023-4206, CVE-2023-4207, and CVE-2023-4208. Do not use this CVE record: CVE-2023-4128...

kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route

This record is a duplicate of CVE-2023-4206, CVE-2023-4207, and CVE-2023-4208. Do not use this CVE record: CVE-2023-4128...

kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route

This record is a duplicate of CVE-2023-4206, CVE-2023-4207, and CVE-2023-4208. Do not use this CVE record: CVE-2023-4128...

kernel: cls_flower: out-of-bounds write in fl_set_geneve_opt()

A flaw was found in the TC flower classifier clsflower in the Networking subsystem of the Linux kernel. This issue occurs when sending two TCAFLOWERKEYENCOPTSGENEVE packets with a total size of 252 bytes, which results in an out-of-bounds write when the third packet enters flsetgeneveopt,...

kernel: cls_flower: out-of-bounds write in fl_set_geneve_opt()

A flaw was found in the TC flower classifier clsflower in the Networking subsystem of the Linux kernel. This issue occurs when sending two TCAFLOWERKEYENCOPTSGENEVE packets with a total size of 252 bytes, which results in an out-of-bounds write when the third packet enters flsetgeneveopt,...

kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route

This record is a duplicate of CVE-2023-4206, CVE-2023-4207, and CVE-2023-4208. Do not use this CVE record: CVE-2023-4128...

kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route

This record is a duplicate of CVE-2023-4206, CVE-2023-4207, and CVE-2023-4208. Do not use this CVE record: CVE-2023-4128...

LSN-0098-1: Kernel Live Patch Security Notice

It was discovered that the IP-VLAN network driver for the Linux kernel did not properly initialize memory in some situations, leading to an out-of- bounds write vulnerability. An attacker could use this to cause a denial of service system crash or possibly execute arbitrary code.CVE-2023-3090 It...

kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route

This record is a duplicate of CVE-2023-4206, CVE-2023-4207, and CVE-2023-4208. Do not use this CVE record: CVE-2023-4128...