CVE-2021-3573

A use-after-free in function hcisockboundioctl of the Linux kernel HCI subsystem was found in the way user calls ioct HCIUNBLOCKADDR or other way triggers race condition of the call hciunregisterdev together with one of the calls hcisockblacklistadd, hcisockblacklistdel, hcigetconninfo,...

2021-08 Cumulative Update for Azure Stack HCI, version 20H2 and Windows Server 2019 Datacenter: Azure Edition for x64-based Systems (KB5005042)

Install this update to resolve issues in Azure Stack HCI, version 20H2 and Windows Server 2019 Datacenter: Azure Edition. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, y...

August 10, 2021 Security Update (KB5005042)

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August 10, 2021 Public preview security update (KB5005039)

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August 10, 2021 Servicing Stack Update (KB5005410)

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Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2021-9404)

The remote Oracle Linux 7 / 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-9404 advisory. - seqfile: disallow extremely large seq buffer allocations Eric Sandeen Orabug: 33135632 CVE-2021-33909 - Bluetooth: fix the erroneous flushwork...

The vulnerability of the sco_sock_sendmsg() function in the HCI subsystem of the Linux operating system allows a hacker to trigger an emergency shutdown of the system or increase their privileges.

The vulnerability of the scosocksendmsg function in the HCI subsystem of the Linux operating system is related to the use of memory after it is freed. Exploiting this vulnerability can allow an attacker to cause the system to terminate abnormally or increase their privileges...

Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2021-9395)

The remote Oracle Linux 6 / 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-9395 advisory. - seqfile: disallow extremely large seq buffer allocations Eric Sandeen Orabug: 33143006 CVE-2021-33909 - net/mlx4: Fix EEPROM dump support Vladysl...

Denial Of Service

kernel is vulnerable to denial of service. The vulnerability exists due to a race condition for removal of HCI controller which allows an attacker to crash the application via malicious input...

kernel: use-after-free in net/bluetooth/hci_event.c when destroying an hci_chan

A use-after-free flaw was found in hcisendacl in the bluetooth host controller interface HCI in Linux kernel, where a local attacker with an access rights could cause a denial of service problem on the system The issue results from the object hchan, freed in hcidisconnloglinkcompleteevt, yet stil...

CVE-2021-3640

A flaw use-after-free in function scosocksendmsg of the Linux kernel HCI subsystem was found in the way user calls ioct UFFDIOREGISTER or other way triggers race condition of the call scoconndel together with the call scosocksendmsg with the expected controllable faulting memory page. A privilege...

SUSE SLES15: cluster-md-kmp-rt / dlm-kmp-rt / gfs2-kmp-rt / kernel-devel-rt / etc (SUSE-SU-2021:2426-1)

The remote SUSE Linux SLES15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:2426-1 advisory. The SUSE Linux Enterprise 15 SP2 RT kernel was updated to receive various security and bugfixes. The following security bugs were fixed: -...

Ubuntu 20.04 LTS : Linux kernel (OEM) vulnerabilities (USN-5015-1)

The remote Ubuntu 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5015-1 advisory. It was discovered that the virtual file system implementation in the Linux kernel contained an unsigned to signed integer conversion error. A local...

kernel: use-after-free in net/bluetooth/hci_event.c when destroying an hci_chan

A use-after-free flaw was found in hcisendacl in the bluetooth host controller interface HCI in Linux kernel, where a local attacker with an access rights could cause a denial of service problem on the system The issue results from the object hchan, freed in hcidisconnloglinkcompleteevt, yet stil...

kernel: use-after-free in net/bluetooth/hci_event.c when destroying an hci_chan

A use-after-free flaw was found in hcisendacl in the bluetooth host controller interface HCI in Linux kernel, where a local attacker with an access rights could cause a denial of service problem on the system The issue results from the object hchan, freed in hcidisconnloglinkcompleteevt, yet stil...

kernel: use-after-free in net/bluetooth/hci_event.c when destroying an hci_chan

A use-after-free flaw was found in hcisendacl in the bluetooth host controller interface HCI in Linux kernel, where a local attacker with an access rights could cause a denial of service problem on the system The issue results from the object hchan, freed in hcidisconnloglinkcompleteevt, yet stil...

Important: Red Hat Security Advisory: kpatch-patch security update

An update 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 the CVE links...

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...

kernel: use-after-free in net/bluetooth/hci_event.c when destroying an hci_chan

A use-after-free flaw was found in hcisendacl in the bluetooth host controller interface HCI in Linux kernel, where a local attacker with an access rights could cause a denial of service problem on the system The issue results from the object hchan, freed in hcidisconnloglinkcompleteevt, yet stil...

kernel: use-after-free in net/bluetooth/hci_event.c when destroying an hci_chan

A use-after-free flaw was found in hcisendacl in the bluetooth host controller interface HCI in Linux kernel, where a local attacker with an access rights could cause a denial of service problem on the system The issue results from the object hchan, freed in hcidisconnloglinkcompleteevt, yet stil...