Debian DLA-2610-1 : linux-4.19 security update

Several vulnerabilities have been discovered in the Linux kernel that may lead to the execution of arbitrary code, privilege escalation, denial of service, or information leaks. CVE-2020-27170, CVE-2020-27171 Piotr Krysiuk discovered flaws in the BPF subsystem's checks for information leaks throu...

CVE-2021-26930

An issue was discovered in the Linux kernel 3.11 through 5.10.16, as used by Xen. To service requests to the PV backend, the driver maps grant references provided by the frontend. In this process, errors may be encountered. In one case, an error encountered earlier might be discarded by later...

PT-2021-3110 · Linux +5 · Linux Kernel +5

Name of the Vulnerable Software and Affected Versions: Linux kernel versions 2.6.39 through 5.10.16 Description: An issue was discovered in the Linux kernel, as used in Xen, where block, net, and SCSI backends consider certain errors a plain bug, deliberately causing a kernel crash. This issue...

Arbitrary Code Execution

qemu is vulnerable to arbitrary code execution. The vulnerability exists through an out-of-bounds heap buffer access flaw caused by the way the iSCSI Block driver handles a response coming from an iSCSI server while checking the status of a Logical Address Block LBA in an iscsicoblockstatus routi...

Linux kernel privilege control vulnerability

Linux kernel is the kernel used by Linux, the open source operating system released by the Linux Foundation in the United States. A privilege control vulnerability exists in Linux kernel 5.8.9. The vulnerability stems from the rbd block device driver in driver /block/ rbdc using incomplete...

[SECURITY] [DLA 2373-1] qemu security update

------------------------------------------------------------------------- Debian LTS Advisory DLA-2373-1 [email protected] https://www.debian.org/lts/security/ Abhijith PA September 13, 2020 https://wiki.debian.org/LTS -...

An out-of-bounds heap buffer access flaw was found in the way the iSCSI Block driver in QEMU versions 2.12.0 before 4.2.1 handled a response coming from an iSCSI server while checking the status of a Logical Address Block (LBA) in an iscsi_co_block_status() routine. A remote user could use this flaw to crash the QEMU process resulting in a denial of service or potential execution of arbitrary code with privileges of the QEMU process on the host.

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Oracle Linux 8 : virt:ol (ELSA-2020-1358)

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2020-1358 advisory. - Resolves: bz1791565 CVE-2020-7039 virt:rhel/qemu-kvm: QEMU: slirp: OOB buffer access while emulating tcp protocols in tcpemu rhel-8.1.0.z - Resolves:...

QEMU: block: iscsi: OOB heap access via an unexpected response of iSCSI Server

An out-of-bounds heap buffer access flaw was found in the way the iSCSI Block driver in QEMU handled a response coming from an iSCSI server while checking the status of a Logical Address Block LBA in an iscsicoblockstatus routine. A remote user could use this flaw to crash the QEMU process,...

QEMU: block: iscsi: OOB heap access via an unexpected response of iSCSI Server

An out-of-bounds heap buffer access flaw was found in the way the iSCSI Block driver in QEMU handled a response coming from an iSCSI server while checking the status of a Logical Address Block LBA in an iscsicoblockstatus routine. A remote user could use this flaw to crash the QEMU process,...

CVE-2018-20856

A flaw was found in the Linux kernel’s block driver implementation blkdrainqueue function where a use-after-free condition could be triggered while draining the outstanding command queue in the systems block device subsystem. An attacker could use this flaw to crash the system or corrupt local...

QEMU: block: iscsi: OOB heap access via an unexpected response of iSCSI Server

An out-of-bounds heap buffer access flaw was found in the way the iSCSI Block driver in QEMU handled a response coming from an iSCSI server while checking the status of a Logical Address Block LBA in an iscsicoblockstatus routine. A remote user could use this flaw to crash the QEMU process,...

QEMU: block: iscsi: OOB heap access via an unexpected response of iSCSI Server

An out-of-bounds heap buffer access flaw was found in the way the iSCSI Block driver in QEMU handled a response coming from an iSCSI server while checking the status of a Logical Address Block LBA in an iscsicoblockstatus routine. A remote user could use this flaw to crash the QEMU process,...

CVE-2020-1711

An out-of-bounds heap buffer access flaw was found in the way the iSCSI Block driver in QEMU handled a response coming from an iSCSI server while checking the status of a Logical Address Block LBA in an iscsicoblockstatus routine. A remote user could use this flaw to crash the QEMU process,...

QEMU: block: iscsi: OOB heap access via an unexpected response of iSCSI Server

An out-of-bounds heap buffer access flaw was found in the way the iSCSI Block driver in QEMU handled a response coming from an iSCSI server while checking the status of a Logical Address Block LBA in an iscsicoblockstatus routine. A remote user could use this flaw to crash the QEMU process,...

QEMU: block: iscsi: OOB heap access via an unexpected response of iSCSI Server

An out-of-bounds heap buffer access flaw was found in the way the iSCSI Block driver in QEMU handled a response coming from an iSCSI server while checking the status of a Logical Address Block LBA in an iscsicoblockstatus routine. A remote user could use this flaw to crash the QEMU process,...

QEMU: block: iscsi: OOB heap access via an unexpected response of iSCSI Server

An out-of-bounds heap buffer access flaw was found in the way the iSCSI Block driver in QEMU handled a response coming from an iSCSI server while checking the status of a Logical Address Block LBA in an iscsicoblockstatus routine. A remote user could use this flaw to crash the QEMU process,...

Important: qemu

Issue Overview: tcpemu in tcpsubr.c in libslirp 4.1.0, as used in QEMU 4.2.0, mismanages memory, as demonstrated by IRC DCC commands in EMUIRC. This can cause a heap-based buffer overflow or other out-of-bounds access which can lead to a DoS or potential execute arbitrary code. CVE-2020-7039 An...

QEMU: block: iscsi: OOB heap access via an unexpected response of iSCSI Server

An out-of-bounds heap buffer access flaw was found in the way the iSCSI Block driver in QEMU handled a response coming from an iSCSI server while checking the status of a Logical Address Block LBA in an iscsicoblockstatus routine. A remote user could use this flaw to crash the QEMU process,...

kernel: Use-after-free in __blk_drain_queue() function in block/blk-core.c

A flaw was found in the Linux kernel’s block driver implementation blkdrainqueue function where a use-after-free condition could be triggered while draining the outstanding command queue in the systems block device subsystem. An attacker could use this flaw to crash the system or corrupt local...