Описание
Security update for qemu
This update for qemu fixes the following issues:
Security issues fixed:
- Fix out-of-bounds write in UAS (USB Attached SCSI) device emulation (bsc#1189702, CVE-2021-3713)
- Fix heap use-after-free in virtio_net_receive_rcu (bsc#1189938, CVE-2021-3748)
- usbredir: free call on invalid pointer in bufp_alloc (bsc#1189145, CVE-2021-3682)
- NULL pointer dereference in ESP (bsc#1180433, CVE-2020-35504) (bsc#1180434, CVE-2020-35505) (bsc#1180435, CVE-2020-35506)
- NULL pointer dereference issue in megasas-gen2 host bus adapter (bsc#1180432, CVE-2020-35503)
- eepro100: stack overflow via infinite recursion (bsc#1182651, CVE-2021-20255)
- usb: unbounded stack allocation in usbredir (bsc#1186012, CVE-2021-3527)
Non-security issues fixed:
- Use max host physical address if -cpu max is used (bsc#1188299)
Список пакетов
Image SLES15-SP1-CHOST-BYOS-Azure
Image SLES15-SP1-CHOST-BYOS-EC2
Image SLES15-SP1-CHOST-BYOS-GCE
SUSE Enterprise Storage 6
SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS
SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS
SUSE Linux Enterprise Server 15 SP1-BCL
SUSE Linux Enterprise Server 15 SP1-LTSS
SUSE Linux Enterprise Server for SAP Applications 15 SP1
Ссылки
- Link for SUSE-SU-2021:3614-1
- E-Mail link for SUSE-SU-2021:3614-1
- SUSE Security Ratings
- SUSE Bug 1180432
- SUSE Bug 1180433
- SUSE Bug 1180434
- SUSE Bug 1180435
- SUSE Bug 1182651
- SUSE Bug 1186012
- SUSE Bug 1189145
- SUSE Bug 1189702
- SUSE Bug 1189938
- SUSE CVE CVE-2020-35503 page
- SUSE CVE CVE-2020-35504 page
- SUSE CVE CVE-2020-35505 page
- SUSE CVE CVE-2020-35506 page
- SUSE CVE CVE-2021-20255 page
- SUSE CVE CVE-2021-3527 page
- SUSE CVE CVE-2021-3682 page
- SUSE CVE CVE-2021-3713 page
Описание
A NULL pointer dereference flaw was found in the megasas-gen2 SCSI host bus adapter emulation of QEMU in versions before and including 6.0. This issue occurs in the megasas_command_cancelled() callback function while dropping a SCSI request. This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
Затронутые продукты
Ссылки
- CVE-2020-35503
- SUSE Bug 1180432
Описание
A NULL pointer dereference flaw was found in the SCSI emulation support of QEMU in versions before 6.0.0. This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
Затронутые продукты
Ссылки
- CVE-2020-35504
- SUSE Bug 1180433
Описание
A NULL pointer dereference flaw was found in the am53c974 SCSI host bus adapter emulation of QEMU in versions before 6.0.0. This issue occurs while handling the 'Information Transfer' command. This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
Затронутые продукты
Ссылки
- CVE-2020-35505
- SUSE Bug 1180434
Описание
A use-after-free vulnerability was found in the am53c974 SCSI host bus adapter emulation of QEMU in versions before 6.0.0 during the handling of the 'Information Transfer' command (CMD_TI). This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service or potential code execution with the privileges of the QEMU process.
Затронутые продукты
Ссылки
- CVE-2020-35506
- SUSE Bug 1180435
Описание
A stack overflow via an infinite recursion vulnerability was found in the eepro100 i8255x device emulator of QEMU. This issue occurs while processing controller commands due to a DMA reentry issue. This flaw allows a guest user or process to consume CPU cycles or crash the QEMU process on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
Затронутые продукты
Ссылки
- CVE-2021-20255
- SUSE Bug 1182651
- SUSE Bug 1182654
Описание
A flaw was found in the USB redirector device (usb-redir) of QEMU. Small USB packets are combined into a single, large transfer request, to reduce the overhead and improve performance. The combined size of the bulk transfer is used to dynamically allocate a variable length array (VLA) on the stack without proper validation. Since the total size is not bounded, a malicious guest could use this flaw to influence the array length and cause the QEMU process to perform an excessive allocation on the stack, resulting in a denial of service.
Затронутые продукты
Ссылки
- CVE-2021-3527
- SUSE Bug 1186012
Описание
A flaw was found in the USB redirector device emulation of QEMU in versions prior to 6.1.0-rc2. It occurs when dropping packets during a bulk transfer from a SPICE client due to the packet queue being full. A malicious SPICE client could use this flaw to make QEMU call free() with faked heap chunk metadata, resulting in a crash of QEMU or potential code execution with the privileges of the QEMU process on the host.
Затронутые продукты
Ссылки
- CVE-2021-3682
- SUSE Bug 1189145
Описание
An out-of-bounds write flaw was found in the UAS (USB Attached SCSI) device emulation of QEMU in versions prior to 6.2.0-rc0. The device uses the guest supplied stream number unchecked, which can lead to out-of-bounds access to the UASDevice->data3 and UASDevice->status3 fields. A malicious guest user could use this flaw to crash QEMU or potentially achieve code execution with the privileges of the QEMU process on the host.
Затронутые продукты
Ссылки
- CVE-2021-3713
- SUSE Bug 1189702
Описание
A use-after-free vulnerability was found in the virtio-net device of QEMU. It could occur when the descriptor's address belongs to the non direct access region, due to num_buffers being set after the virtqueue elem has been unmapped. A malicious guest could use this flaw to crash QEMU, resulting in a denial of service condition, or potentially execute code on the host with the privileges of the QEMU process.
Затронутые продукты
Ссылки
- CVE-2021-3748
- SUSE Bug 1189938