CVE-2025-12464
MediumCVSS 6.2Exploitation Probability (EPSS)
Low risk7th percentile - higher than 7% of all known CVEs
Summary
A stack-based buffer overflow was found in the QEMU e1000 network device. The issue stems from the device's receive code still being able to process a short frame in loopback mode, leading to a buffer overrun in the e1000_receive_iov() function.
Risk Assessment
A malicious guest user could exploit this vulnerability to crash the QEMU process on the host, resulting in a denial of service (DoS) and potentially disrupting other virtual machines.
Recommendation
Immediately update QEMU to a version containing the fix for CVE-2025-12464. Until the update is applied, consider disabling loopback mode for the e1000 device or restricting its use to trusted guests.
Other vulnerabilities in QEMU
See all- CVE-2015-7504High
Heap-based buffer overflow in the pcnet_receive function in hw/net/pcnet.c in QEMU allows guest OS administrators to cause a denial of service (instance crash) or possibly execute arbitrary code via a series of packets in loopback mode.
- CVE-2017-15268High
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-2017-13711High
A use-after-free vulnerability in the sofree function in slirp/socket.c in QEMU allows attackers to cause a denial of service (QEMU instance crash) by failing to properly clear ifq_so from pending packets.
- CVE-2014-0145High
Multiple buffer overflows in QEMU before 1.7.2 and 2.x before 2.0.0 allow local users to cause a denial of service (crash) or possibly execute arbitrary code via a large L1 table in the qcow2_snapshot_load_tmp in the QCOW 2 block driver or various parameters in the DMG block driver.
- CVE-2014-0143High
Multiple integer overflows in QEMU, before version 2.0.0, allow local users to cause a denial of service (crash) by providing crafted input, leading to buffer overflows and memory corruption.
- CVE-2017-10664High
qemu-nbd in QEMU does not ignore SIGPIPE, allowing remote attackers to cause a denial of service (daemon crash) by disconnecting during a server-to-client reply attempt.
- CVE-2017-8309High
A memory leak in audio/audio.c in QEMU allows remote attackers to cause a denial of service by repeatedly starting and stopping audio capture.
- CVE-2017-8284High
The disas_insn function in QEMU before version 2.9.0 does not limit instruction size in TCG mode without hardware acceleration, allowing local users to gain privileges by creating a modified basic block that injects code into a setuid program.
- CVE-2015-8619High
The Human Monitor Interface support in QEMU allows remote attackers to cause a denial of service through out-of-bounds write and application crash.
- CVE-2015-8567High
A memory leak in QEMU's net/vmxnet3.c allows remote attackers to cause a denial of service through excessive memory consumption.
Original NVD description (English source)
A stack-based buffer overflow was found in the QEMU e1000 network device. The code for padding short frames was dropped from individual network devices and moved to the net core code. The issue stems from the device's receive code still being able to process a short frame in loopback mode. This could lead to a buffer overrun in the e1000_receive_iov() function via the loopback code path. A malicious guest user could use this vulnerability to crash the QEMU process on the host, resulting in a denial of service.