CVSS: 4.4EPSS: 0%CPEs: 4EXPL: 0CVE-2020-35505 – Ubuntu Security Notice USN-5010-1
https://notcve.org/view.php?id=CVE-2020-35505
28 May 2021 — 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. Se encontró un fallo de desreferencia del puntero NULL en la emulación del adaptador de bus de host SCSI am53c974 de QEMU en versiones ... • http://www.openwall.com/lists/oss-security/2021/04/16/3 • CWE-476: NULL Pointer Dereference •
CVSS: 6.0EPSS: 0%CPEs: 3EXPL: 0CVE-2020-35504 – Gentoo Linux Security Advisory 202208-27
https://notcve.org/view.php?id=CVE-2020-35504
28 May 2021 — 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. Se encontró un fallo de desreferencia del puntero NULL en el soporte de emulación SCSI de QEMU en versiones anteriores a 6.0.0. Este fallo permite a un usuario invitado privilegiado bloquear el proceso QEMU en el host... • http://www.openwall.com/lists/oss-security/2021/04/16/3 • CWE-476: NULL Pointer Dereference •
CVSS: 5.5EPSS: 0%CPEs: 5EXPL: 0CVE-2021-3527 – Ubuntu Security Notice USN-5010-1
https://notcve.org/view.php?id=CVE-2021-3527
26 May 2021 — 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, resul... • https://bugzilla.redhat.com/show_bug.cgi?id=1955695 • CWE-770: Allocation of Resources Without Limits or Throttling •
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: 6.5EPSS: 0%CPEs: 14EXPL: 0CVE-2021-20257 – QEMU: net: e1000: infinite loop while processing transmit descriptors
https://notcve.org/view.php?id=CVE-2021-20257
23 Apr 2021 — An infinite loop flaw was found in the e1000 NIC emulator of the QEMU. This issue occurs while processing transmits (tx) descriptors in process_tx_desc if various descriptor fields are initialized with invalid values. This flaw allows a guest to consume CPU cycles on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability. Se ha encontrado un fallo de bucle infinito en el emulador NIC e1000 de QEMU. • https://bugzilla.redhat.com/show_bug.cgi?id=1930087 • CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') •
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: 3.2EPSS: 0%CPEs: 4EXPL: 1CVE-2021-3392 – Ubuntu Security Notice USN-5010-1
https://notcve.org/view.php?id=CVE-2021-3392
23 Mar 2021 — A use-after-free flaw was found in the MegaRAID emulator of QEMU. This issue occurs while processing SCSI I/O requests in the case of an error mptsas_free_request() that does not dequeue the request object 'req' from a pending requests queue. This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service. Versions between 2.10.0 and 5.2.0 are potentially affected. Se encontró un fallo de uso de la memoria previamente liberada en el emulador MegaRAID de QEMU. • https://bugs.launchpad.net/qemu/+bug/1914236 • CWE-416: Use After Free •
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: 3.3EPSS: 0%CPEs: 1EXPL: 0CVE-2021-20263 – Gentoo Linux Security Advisory 202208-27
https://notcve.org/view.php?id=CVE-2021-20263
09 Mar 2021 — A flaw was found in the virtio-fs shared file system daemon (virtiofsd) of QEMU. The new 'xattrmap' option may cause the 'security.capability' xattr in the guest to not drop on file write, potentially leading to a modified, privileged executable in the guest. In rare circumstances, this flaw could be used by a malicious user to elevate their privileges within the guest. Se encontró un fallo en el demonio del sistema de archivos compartidos virtio-fs (virtiofsd) de QEMU. La nueva opción "xattrmap" puede... • https://bugzilla.redhat.com/show_bug.cgi?id=1933668 • CWE-281: Improper Preservation of Permissions •