USN-8412-3

USN-8412-3 · qemu regression

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USN-8412-1 fixed vulnerabilities QEMU. On Ubuntu 20.04 LTS, the fix for CVE-2024-4467 was incomplete and prevented the creation of boot volumes from qcow2 images. This update fixes the problem. We apologize for the inconvenience. Original advisory details: Felipe Franciosi, Raphael Norwitz, and Peter Turschmid discovered that the iSCSI block driver in QEMU incorrectly handled certain responses from an iSCSI server. A remote attacker could possibly use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 14.04 LTS. (CVE-2020-1711) It was discovered that the iSCSI block driver in QEMU incorrectly handled certain memory operations, leading to a heap-based buffer over-read. An attacker could possibly use this issue to expose sensitive information from the host. This issue only affected Ubuntu 14.04 LTS. (CVE-2020-11947) Ziming Zhang discovered that the SM501 display driver in QEMU contained an integer overflow. A local attacker could possibly use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS. (CVE-2020-12829) Gaoning Pan and Xingwei Li discovered that the USB xHCI controller implementation in QEMU contained an infinite loop. An attacker inside the guest could possibly use this issue to cause QEMU to hang, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, and Ubuntu 18.04 LTS. (CVE-2020-14394) Lei Sun discovered that QEMU incorrectly handled certain MemoryRegionOps objects, leading to a NULL pointer dereference. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2020-15469) Alexander Bulekov discovered that the e1000e network device implementation in QEMU contained a use-after-free. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS. (CVE-2020-15859) Ziming Zhang discovered that the XGMAC Ethernet controller in QEMU contained a buffer overflow. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 14.04 LTS. (CVE-2020-15863) Alexander Bulekov discovered that the SDHCI device emulation in QEMU contained a heap-based buffer overflow. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 14.04 LTS. (CVE-2020-17380) Sergej Schumilo, Cornelius Aschermann, and Simon Wörner discovered that the USB xHCI controller implementation in QEMU did not check a return value, leading to a use-after-free. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS. (CVE-2020-25084) Gaoning Pan, Yongkang Jia, and Yi Ren discovered that the USB OHCI controller implementation in QEMU contained a stack-based buffer over- read. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS. (CVE-2020-25624) It was discovered that the USB OHCI controller implementation in QEMU contained an infinite loop. An attacker inside the guest could possibly use this issue to cause QEMU to consume resources, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS. (CVE-2020-25625) Cheolwoo Myung discovered that the USB EHCI emulation in QEMU did not handle DMA memory map failures, leading to a reachable assertion. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS. (CVE-2020-25723) Gaoning Pan discovered that the network device emulation in QEMU could be made to trigger an assertion failure when processing packets that lacked a valid layer 3 protocol. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS. (CVE-2020-27617) Wenxiang Qian discovered that the ATAPI emulation in QEMU did not properly validate a buffer index, leading to an out-of-bounds read. An attacker inside the guest could possibly use this issue to expose sensitive information or cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS. (CVE-2020-29443) Cheolwoo Myung discovered that the ESP SCSI emulation in QEMU contained a NULL pointer dereference. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2020-35504) Cheolwoo Myung discovered that the am53c974 SCSI host bus adapter emulation in QEMU contained a NULL pointer dereference. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2020-35505) It was discovered that the SDHCI controller emulation in QEMU contained out-of-bounds read and write issues. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2021-3409) It was discovered that several network device emulations in QEMU contained an infinite loop when operating in loopback mode. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2021-3416) Alexander Bulekov discovered that the floppy disk emulation in QEMU contained a heap-based buffer overflow. An attacker inside the guest could possibly use this issue to expose sensitive information or cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2021-3507) Remy Noel discovered that the USB redirector device emulation in QEMU performed an unbounded stack allocation when combining USB packets. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2021-3527) It was discovered that the QXL display device emulation in QEMU contained an integer overflow, leading to a heap-based buffer overflow. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2021-4206) It was discovered that the QXL display device emulation in QEMU performed a double fetch of guest-controlled values, leading to a heap-based buffer overflow. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2021-4207) It was discovered that the 9pfs server implementation in QEMU contained a race condition, leading to a use-after-free. A malicious 9p client could possibly use this issue to escalate privileges. This issue only affected Ubuntu 14.04 LTS. (CVE-2021-20181) Gaoning Pan discovered that the floppy disk emulation in QEMU contained a NULL pointer dereference. An attacker inside the guest could possibly use this issue to cause QEMU to cras

Corrección disponible

Publicación

2026-06-28T23:43:40Z

Actualización

2026-06-29T23:15:17.334709630Z

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