Vulnerabilities (CVE)

Filtered by vendor Qemu Subscribe
Total 421 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2017-2630 1 Qemu 1 Qemu 2026-06-17 6.5 MEDIUM 5.5 MEDIUM
A stack buffer overflow flaw was found in the Quick Emulator (QEMU) before 2.9 built with the Network Block Device (NBD) client support. The flaw could occur while processing server's response to a 'NBD_OPT_LIST' request. A malicious NBD server could use this issue to crash a remote NBD client resulting in DoS or potentially execute arbitrary code on client host with privileges of the QEMU process.
CVE-2017-2620 5 Citrix, Debian, Qemu and 2 more 10 Xenserver, Debian Linux, Qemu and 7 more 2026-06-17 9.0 HIGH 5.5 MEDIUM
Quick emulator (QEMU) before 2.8 built with the Cirrus CLGD 54xx VGA Emulator support is vulnerable to an out-of-bounds access issue. The issue could occur while copying VGA data in cirrus_bitblt_cputovideo. A privileged user inside guest could use this flaw to crash the QEMU process OR potentially execute arbitrary code on host with privileges of the QEMU process.
CVE-2017-2615 5 Citrix, Debian, Qemu and 2 more 10 Xenserver, Debian Linux, Qemu and 7 more 2026-06-17 9.0 HIGH 5.5 MEDIUM
Quick emulator (QEMU) built with the Cirrus CLGD 54xx VGA emulator support is vulnerable to an out-of-bounds access issue. It could occur while copying VGA data via bitblt copy in backward mode. A privileged user inside a guest could use this flaw to crash the QEMU process resulting in DoS or potentially execute arbitrary code on the host with privileges of QEMU process on the host.
CVE-2017-18043 3 Canonical, Debian, Qemu 3 Ubuntu Linux, Debian Linux, Qemu 2026-06-17 2.1 LOW 5.5 MEDIUM
Integer overflow in the macro ROUND_UP (n, d) in Quick Emulator (Qemu) allows a user to cause a denial of service (Qemu process crash).
CVE-2017-18030 2 Debian, Qemu 2 Debian Linux, Qemu 2026-06-17 2.1 LOW 4.4 MEDIUM
The cirrus_invalidate_region function in hw/display/cirrus_vga.c in Qemu allows local OS guest privileged users to cause a denial of service (out-of-bounds array access and QEMU process crash) via vectors related to negative pitch.
CVE-2017-17381 2 Debian, Qemu 2 Debian Linux, Qemu 2026-06-17 2.1 LOW 6.5 MEDIUM
The Virtio Vring implementation in QEMU allows local OS guest users to cause a denial of service (divide-by-zero error and QEMU process crash) by unsetting vring alignment while updating Virtio rings.
CVE-2017-16845 3 Canonical, Debian, Qemu 3 Ubuntu Linux, Debian Linux, Qemu 2026-06-17 6.4 MEDIUM 10.0 CRITICAL
hw/input/ps2.c in Qemu does not validate 'rptr' and 'count' values during guest migration, leading to out-of-bounds access.
CVE-2017-15289 1 Qemu 1 Qemu 2026-06-17 2.1 LOW 6.0 MEDIUM
The mode4and5 write functions in hw/display/cirrus_vga.c in Qemu allow local OS guest privileged users to cause a denial of service (out-of-bounds write access and Qemu process crash) via vectors related to dst calculation.
CVE-2017-15268 1 Qemu 1 Qemu 2026-06-17 5.0 MEDIUM 7.5 HIGH
Qemu through 2.10.0 allows remote attackers to cause a memory leak by triggering slow data-channel read operations, related to io/channel-websock.c.
CVE-2017-15124 1 Qemu 1 Qemu 2026-06-17 7.8 HIGH 7.5 HIGH
VNC server implementation in Quick Emulator (QEMU) 2.11.0 and older was found to be vulnerable to an unbounded memory allocation issue, as it did not throttle the framebuffer updates sent to its client. If the client did not consume these updates, VNC server allocates growing memory to hold onto this data. A malicious remote VNC client could use this flaw to cause DoS to the server host.
CVE-2017-15119 4 Canonical, Debian, Qemu and 1 more 4 Ubuntu Linux, Debian Linux, Qemu and 1 more 2026-06-17 5.0 MEDIUM 5.8 MEDIUM
The Network Block Device (NBD) server in Quick Emulator (QEMU) before 2.11 is vulnerable to a denial of service issue. It could occur if a client sent large option requests, making the server waste CPU time on reading up to 4GB per request. A client could use this flaw to keep the NBD server from serving other requests, resulting in DoS.
CVE-2017-15118 3 Canonical, Qemu, Redhat 3 Ubuntu Linux, Qemu, Enterprise Linux 2026-06-17 7.5 HIGH 8.3 HIGH
A stack-based buffer overflow vulnerability was found in NBD server implementation in qemu before 2.11 allowing a client to request an export name of size up to 4096 bytes, which in fact should be limited to 256 bytes, causing an out-of-bounds stack write in the qemu process. If NBD server requires TLS, the attacker cannot trigger the buffer overflow without first successfully negotiating TLS.
CVE-2017-15038 1 Qemu 1 Qemu 2026-06-17 1.9 LOW 5.6 MEDIUM
Race condition in the v9fs_xattrwalk function in hw/9pfs/9p.c in QEMU (aka Quick Emulator) allows local guest OS users to obtain sensitive information from host heap memory via vectors related to reading extended attributes.
CVE-2017-14167 2 Debian, Qemu 2 Debian Linux, Qemu 2026-06-17 7.2 HIGH 8.8 HIGH
Integer overflow in the load_multiboot function in hw/i386/multiboot.c in QEMU (aka Quick Emulator) allows local guest OS users to execute arbitrary code on the host via crafted multiboot header address values, which trigger an out-of-bounds write.
CVE-2017-13711 2 Debian, Qemu 2 Debian Linux, Qemu 2026-06-17 5.0 MEDIUM 7.5 HIGH
Use-after-free vulnerability in the sofree function in slirp/socket.c in QEMU (aka Quick Emulator) allows attackers to cause a denial of service (QEMU instance crash) by leveraging failure to properly clear ifq_so from pending packets.
CVE-2017-13673 1 Qemu 1 Qemu 2026-06-17 4.0 MEDIUM 6.5 MEDIUM
The vga display update in mis-calculated the region for the dirty bitmap snapshot in case split screen mode is used causing a denial of service (assertion failure) in the cpu_physical_memory_snapshot_get_dirty function.
CVE-2017-13672 2 Debian, Qemu 2 Debian Linux, Qemu 2026-06-17 2.1 LOW 5.5 MEDIUM
QEMU (aka Quick Emulator), when built with the VGA display emulator support, allows local guest OS privileged users to cause a denial of service (out-of-bounds read and QEMU process crash) via vectors involving display update.
CVE-2017-12809 2 Debian, Qemu 2 Debian Linux, Qemu 2026-06-17 2.1 LOW 6.5 MEDIUM
QEMU (aka Quick Emulator), when built with the IDE disk and CD/DVD-ROM Emulator support, allows local guest OS privileged users to cause a denial of service (NULL pointer dereference and QEMU process crash) by flushing an empty CDROM device drive.
CVE-2017-11434 2 Debian, Qemu 2 Debian Linux, Qemu 2026-06-17 2.1 LOW 5.5 MEDIUM
The dhcp_decode function in slirp/bootp.c in QEMU (aka Quick Emulator) allows local guest OS users to cause a denial of service (out-of-bounds read and QEMU process crash) via a crafted DHCP options string.
CVE-2017-11334 2 Debian, Qemu 2 Debian Linux, Qemu 2026-06-17 2.1 LOW 4.4 MEDIUM
The address_space_write_continue function in exec.c in QEMU (aka Quick Emulator) allows local guest OS privileged users to cause a denial of service (out-of-bounds access and guest instance crash) by leveraging use of qemu_map_ram_ptr to access guest ram block area.