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Search Results (Refine Search)

Search Parameters:
  • Results Type: Overview
  • Keyword (text search): cpe:2.3:a:qemu:qemu:2.9.0:rc4:*:*:*:*:*:*
  • CPE Name Search: true
There are 123 matching records.
Displaying matches 41 through 60.
Vuln ID Summary CVSS Severity
CVE-2020-35504

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.

Published: May 28, 2021; 7:15:07 AM -0400
V3.1: 6.0 MEDIUM
V2.0: 2.1 LOW
CVE-2021-3527

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.

Published: May 26, 2021; 6:15:08 PM -0400
V3.1: 5.5 MEDIUM
V2.0: 2.1 LOW
CVE-2021-20181

A race condition flaw was found in the 9pfs server implementation of QEMU up to and including 5.2.0. This flaw allows a malicious 9p client to cause a use-after-free error, potentially escalating their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity as well as system availability.

Published: May 13, 2021; 12:15:07 PM -0400
V3.1: 7.5 HIGH
V2.0: 6.9 MEDIUM
CVE-2021-3507

A heap buffer overflow was found in the floppy disk emulator of QEMU up to 6.0.0 (including). It could occur in fdctrl_transfer_handler() in hw/block/fdc.c while processing DMA read data transfers from the floppy drive to the guest system. A privileged guest user could use this flaw to crash the QEMU process on the host resulting in DoS scenario, or potential information leakage from the host memory.

Published: May 06, 2021; 12:15:07 PM -0400
V3.1: 6.1 MEDIUM
V2.0: 3.6 LOW
CVE-2021-3409

The patch for CVE-2020-17380/CVE-2020-25085 was found to be ineffective, thus making QEMU vulnerable to the out-of-bounds read/write access issues previously found in the SDHCI controller emulation code. This flaw allows a malicious privileged guest to crash the QEMU process on the host, resulting in a denial of service or potential code execution. QEMU up to (including) 5.2.0 is affected by this.

Published: March 23, 2021; 5:15:14 PM -0400
V3.1: 5.7 MEDIUM
V2.0: 4.6 MEDIUM
CVE-2021-3416

A potential stack overflow via infinite loop issue was found in various NIC emulators of QEMU in versions up to and including 5.2.0. The issue occurs in loopback mode of a NIC wherein reentrant DMA checks get bypassed. A guest user/process may use this flaw to consume CPU cycles or crash the QEMU process on the host resulting in DoS scenario.

Published: March 18, 2021; 4:15:13 PM -0400
V3.1: 6.0 MEDIUM
V2.0: 2.1 LOW
CVE-2021-20255

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.

Published: March 09, 2021; 3:15:13 PM -0500
V3.1: 5.5 MEDIUM
V2.0: 2.1 LOW
CVE-2021-20203

An integer overflow issue was found in the vmxnet3 NIC emulator of the QEMU for versions up to v5.2.0. It may occur if a guest was to supply invalid values for rx/tx queue size or other NIC parameters. A privileged guest user may use this flaw to crash the QEMU process on the host resulting in DoS scenario.

Published: February 25, 2021; 3:15:11 PM -0500
V3.1: 3.2 LOW
V2.0: 2.1 LOW
CVE-2020-17380

A heap-based buffer overflow was found in QEMU through 5.0.0 in the SDHCI device emulation support. It could occur while doing a multi block SDMA transfer via the sdhci_sdma_transfer_multi_blocks() routine in hw/sd/sdhci.c. A guest user or process could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition, or potentially execute arbitrary code with privileges of the QEMU process on the host.

Published: January 30, 2021; 1:15:12 AM -0500
V3.1: 6.3 MEDIUM
V2.0: 4.6 MEDIUM
CVE-2020-27821

A flaw was found in the memory management API of QEMU during the initialization of a memory region cache. This issue could lead to an out-of-bounds write access to the MSI-X table while performing MMIO operations. A guest user may abuse this flaw to crash the QEMU process on the host, resulting in a denial of service. This flaw affects QEMU versions prior to 5.2.0.

Published: December 08, 2020; 5:15:18 PM -0500
V3.1: 6.0 MEDIUM
V2.0: 2.1 LOW
CVE-2020-25723

A reachable assertion issue was found in the USB EHCI emulation code of QEMU. It could occur while processing USB requests due to missing handling of DMA memory map failure. A malicious privileged user within the guest may abuse this flaw to send bogus USB requests and crash the QEMU process on the host, resulting in a denial of service.

Published: December 01, 2020; 8:15:12 PM -0500
V3.1: 3.2 LOW
V2.0: 2.1 LOW
CVE-2020-24352

An issue was discovered in QEMU through 5.1.0. An out-of-bounds memory access was found in the ATI VGA device implementation. This flaw occurs in the ati_2d_blt() routine in hw/display/ati_2d.c while handling MMIO write operations through the ati_mm_write() callback. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service.

Published: October 16, 2020; 2:15:12 AM -0400
V3.1: 5.5 MEDIUM
V2.0: 2.1 LOW
CVE-2020-25743

hw/ide/pci.c in QEMU before 5.1.1 can trigger a NULL pointer dereference because it lacks a pointer check before an ide_cancel_dma_sync call.

Published: October 06, 2020; 11:15:15 AM -0400
V3.1: 3.2 LOW
V2.0: 2.1 LOW
CVE-2020-25742

pci_change_irq_level in hw/pci/pci.c in QEMU before 5.1.1 has a NULL pointer dereference because pci_get_bus() might not return a valid pointer.

Published: October 06, 2020; 11:15:15 AM -0400
V3.1: 3.2 LOW
V2.0: 2.1 LOW
CVE-2020-14364

An out-of-bounds read/write access flaw was found in the USB emulator of the QEMU in versions before 5.2.0. This issue occurs while processing USB packets from a guest when USBDevice 'setup_len' exceeds its 'data_buf[4096]' in the do_token_in, do_token_out routines. This flaw allows a guest user to crash the QEMU process, resulting in a denial of service, or the potential execution of arbitrary code with the privileges of the QEMU process on the host.

Published: August 31, 2020; 2:15:12 PM -0400
V3.1: 5.0 MEDIUM
V2.0: 4.4 MEDIUM
CVE-2020-12829

In QEMU through 5.0.0, an integer overflow was found in the SM501 display driver implementation. This flaw occurs in the COPY_AREA macro while handling MMIO write operations through the sm501_2d_engine_write() callback. A local attacker could abuse this flaw to crash the QEMU process in sm501_2d_operation() in hw/display/sm501.c on the host, resulting in a denial of service.

Published: August 31, 2020; 11:15:10 AM -0400
V3.1: 3.8 LOW
V2.0: 2.1 LOW
CVE-2020-14415

oss_write in audio/ossaudio.c in QEMU before 5.0.0 mishandles a buffer position.

Published: August 27, 2020; 12:15:10 PM -0400
V3.1: 3.3 LOW
V2.0: 2.1 LOW
CVE-2020-16092

In QEMU through 5.0.0, an assertion failure can occur in the network packet processing. This issue affects the e1000e and vmxnet3 network devices. A malicious guest user/process could use this flaw to abort the QEMU process on the host, resulting in a denial of service condition in net_tx_pkt_add_raw_fragment in hw/net/net_tx_pkt.c.

Published: August 11, 2020; 12:15:12 PM -0400
V3.1: 3.8 LOW
V2.0: 2.1 LOW
CVE-2020-15863

hw/net/xgmac.c in the XGMAC Ethernet controller in QEMU before 07-20-2020 has a buffer overflow. This occurs during packet transmission and affects the highbank and midway emulated machines. A guest user or process could use this flaw to crash the QEMU process on the host, resulting in a denial of service or potential privileged code execution. This was fixed in commit 5519724a13664b43e225ca05351c60b4468e4555.

Published: July 28, 2020; 12:15:12 PM -0400
V3.1: 5.3 MEDIUM
V2.0: 4.4 MEDIUM
CVE-2020-15469

In QEMU 4.2.0, a MemoryRegionOps object may lack read/write callback methods, leading to a NULL pointer dereference.

Published: July 02, 2020; 4:15:11 PM -0400
V3.1: 2.3 LOW
V2.0: 2.1 LOW