CVSS: 6.1EPSS: 0%CPEs: 4EXPL: 1CVE-2021-3507 – QEMU: fdc: heap buffer overflow in DMA read data transfers
https://notcve.org/view.php?id=CVE-2021-3507
06 May 2021 — 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. Se encontró un desbordamiento del búfer de pila en el emulador de disquete de QEMU versiones hasta 6.0.0 (in... • https://bugzilla.redhat.com/show_bug.cgi?id=1951118 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-787: Out-of-bounds Write •
CVSS: 6.0EPSS: 0%CPEs: 5EXPL: 0CVE-2021-20221 – qemu: out-of-bound heap buffer access via an interrupt ID field
https://notcve.org/view.php?id=CVE-2021-20221
07 Apr 2021 — An out-of-bounds heap buffer access issue was found in the ARM Generic Interrupt Controller emulator of QEMU up to and including qemu 4.2.0on aarch64 platform. The issue occurs because while writing an interrupt ID to the controller memory area, it is not masked to be 4 bits wide. It may lead to the said issue while updating controller state fields and their subsequent processing. A privileged guest user may use this flaw to crash the QEMU process on the host resulting in DoS scenario. Se encontró un proble... • http://www.openwall.com/lists/oss-security/2021/02/05/1 • CWE-125: Out-of-bounds Read CWE-787: Out-of-bounds Write •
CVSS: 6.5EPSS: 0%CPEs: 1EXPL: 0CVE-2021-20295 – QEMU: Regression of CVE-2020-10756 fix in virt:rhel/qemu-kvm in Red Hat Enterprise Linux 8.3
https://notcve.org/view.php?id=CVE-2021-20295
06 Apr 2021 — It was discovered that the update for the virt:rhel module in the RHSA-2020:4676 (https://access.redhat.com/errata/RHSA-2020:4676) erratum released as part of Red Hat Enterprise Linux 8.3 failed to include the fix for the qemu-kvm component issue CVE-2020-10756, which was previously corrected in virt:rhel/qemu-kvm via erratum RHSA-2020:4059 (https://access.redhat.com/errata/RHSA-2020:4059). CVE-2021-20295 was assigned to that Red Hat specific security regression. For more details about the original security... • https://access.redhat.com/security/cve/CVE-2020-10756 • CWE-125: Out-of-bounds Read •
CVSS: 5.7EPSS: 0%CPEs: 4EXPL: 0CVE-2021-3409 – Ubuntu Security Notice USN-5010-1
https://notcve.org/view.php?id=CVE-2021-3409
23 Mar 2021 — 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. Se detectó que el parche para CVE-2020-17380/CVE-2020-25085 era ineficaz, por lo que QEMU era vulnerable a prob... • https://bugzilla.redhat.com/show_bug.cgi?id=1928146 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •
CVSS: 6.0EPSS: 0%CPEs: 8EXPL: 0CVE-2021-3416 – QEMU: net: Infinite loop in loopback mode may lead to stack overflow
https://notcve.org/view.php?id=CVE-2021-3416
18 Mar 2021 — 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. Se encontró un posible desbordamiento de la pila por medio de un problema de bucle infinito en varios emuladores de NIC de QEMU en versiones hasta 5.2.0 incluyéndola.&... • https://bugzilla.redhat.com/show_bug.cgi?id=1932827 • CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') •
CVSS: 3.2EPSS: 0%CPEs: 4EXPL: 1CVE-2021-20203 – Ubuntu Security Notice USN-5307-1
https://notcve.org/view.php?id=CVE-2021-20203
25 Feb 2021 — 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. Se encontró un problema de desbordamiento de enteros en el emulador de NIC vmxnet3 de QEMU para versiones hasta v5.2.0. Puede ocurrir si un invitado estaba suministrando valores no válidos para el t... • https://bugs.launchpad.net/qemu/+bug/1913873 • CWE-190: Integer Overflow or Wraparound •
CVSS: 7.5EPSS: 0%CPEs: 3EXPL: 0CVE-2021-20181 – QEMU Plan 9 File System Time-Of-Check Time-Of-Use Privilege Escalation Vulnerability
https://notcve.org/view.php?id=CVE-2021-20181
08 Feb 2021 — 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. Se encontró un fallo de condición de carrera en la implementación del servidor 9pfs de QEMU versiones hasta 5.2.0 incluyéndola. Este fallo permite a un cliente 9p malicios... • https://bugzilla.redhat.com/show_bug.cgi?id=1927007 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition •
CVSS: 6.0EPSS: 0%CPEs: 2EXPL: 0CVE-2020-27821 – QEMU: heap buffer overflow in msix_table_mmio_write() in hw/pci/msix.c
https://notcve.org/view.php?id=CVE-2020-27821
08 Dec 2020 — 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. Se encontró uno fallo en la API de administración de memoria de QEMU durante la inicialización de una caché de región de memoria. • http://www.openwall.com/lists/oss-security/2020/12/16/6 • CWE-122: Heap-based Buffer Overflow CWE-787: Out-of-bounds Write •
CVSS: 3.2EPSS: 0%CPEs: 2EXPL: 0CVE-2020-25723 – QEMU: assertion failure through usb_packet_unmap() in hw/usb/hcd-ehci.c
https://notcve.org/view.php?id=CVE-2020-25723
30 Nov 2020 — 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. Se encontró un problema de aserción alcanzable en el código de emulación USB EHCI de QEMU. Podría ocurrir mientras se procesan las peticiones USB debido a una falta de... • http://www.openwall.com/lists/oss-security/2020/12/22/1 • CWE-617: Reachable Assertion •
CVSS: 6.3EPSS: 0%CPEs: 2EXPL: 0CVE-2020-17380 – Ubuntu Security Notice USN-4650-1
https://notcve.org/view.php?id=CVE-2020-17380
30 Nov 2020 — 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. Se encontró un desbordamiento del búfer en la región heap de la memoria en... • http://www.openwall.com/lists/oss-security/2021/03/09/1 • CWE-787: Out-of-bounds Write •