Описание
Security update for qemu
This update for qemu fixes the following issues:
Security issues fixed:
- 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)
Список пакетов
SUSE Linux Enterprise Server 12 SP2-BCL
Ссылки
- Link for SUSE-SU-2021:3575-1
- E-Mail link for SUSE-SU-2021:3575-1
- 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 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
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