CVE-2022-1050

A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device. This flaw allows a crafted guest driver to execute HW commands when shared buffers are not yet allocated, potentially leading to a use-after-free condition.

Security Fix(es):

A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device. This flaw allows a crafted guest driver to execute HW commands when shared buffers are not yet allocated, potentially leading to a use-after-free condition.(CVE-2022-1050)

QEMU is a FAST! processor emulator using dynamic translation to achieve good emulation speed.

Security Fix(es):

A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device. This flaw allows a crafted guest driver to execute HW commands when shared buffers are not yet allocated, potentially leading to a use-after-free condition.(CVE-2022-1050)

A flaw was found in the QEMU Guest Agent service for Windows. A local unprivileged user may be able to manipulate the QEMU Guest Agent's Windows installer via repair custom actions to elevate their privileges on the system.(CVE-2023-0664)

A flaw was found in the 9p passthrough filesystem (9pfs) implementation in QEMU. The 9pfs server did not prohibit opening special files on the host side, potentially allowing a malicious client to escape from the exported 9p tree by creating and opening a device file in the shared folder.(CVE-2023-2861)

A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device. This flaw allows a crafted guest driver to execute HW commands when shared buffers are not yet allocated, potentially leading to a use-after-free condition.

These are all security issues fixed in the qemu-7.1.0-12.1 package on the GA media of openSUSE Tumbleweed.

This update for qemu fixes the following issues:

• CVE-2022-4144: Fixed qxl_phys2virt unsafe address translation that can lead to out-of-bounds read (bsc#1205808).
• CVE-2022-3165: Fixed integer underflow in vnc_client_cut_text_ext() (bsc#1203788).
• CVE-2022-1050: Fixed use-after-free issue in pvrdma_exec_cmd() (bsc#1197653).

Bugfixes:

• Fixed deviation of guest clock (bsc#1206527).
• Fixed broken 'block limits' VPD emulation (bsc#1202364).

This update for qemu fixes the following issues:

• bsc#1172033 (CVE-2020-13253)

• bsc#1180207 (CVE-2020-14394)

• bsc#1172382 (CVE-2020-13754)

• bsc#1198038 (CVE-2022-0216)

• bsc#1193880 (CVE-2021-3929)

• bsc#1197653 (CVE-2022-1050)

• bsc#1205808 (CVE-2022-4144), bsc#1198712 (CVE-2022-26354)

• bsc#1175144 (CVE-2020-17380, CVE-2020-25085, CVE-2021-3409), bsc#1185000 (CVE-2021-3507), bsc#1201367, CVE-2022-35414

• About bsc#1175144, see also bsc#1182282 (CVE-2021-3409)

• bsc#1198035, CVE-2021-4206

This update for qemu fixes the following issues:

• CVE-2022-4144: Fixed unsafe address translation can lead to out-of-bounds read in qxl_phys2virt (bsc#1205808).
• CVE-2021-3507: Fixed heap buffer overflow in DMA read data transfers in fdc (bsc#1185000).
• CVE-2020-14394: Fixed infinite loop in xhci_ring_chain_length() (bsc#1180207).
• CVE-2022-0216: Fixed a use-after-free in lsi_do_msgout function in hw/scsi/lsi53c895a.c (bsc#1198038).
• CVE-2022-1050: Fixed a use-after-free issue in pvrdma_exec_cmd() in pvrdma (bsc#1197653).
• CVE-2021-3929: Fixed a DMA reentrancy issue leads to use-after-free in nvme (bsc#1193880).

The following non-security bugs were fixed:

• Fix bsc#1202364.

This update for qemu fixes the following issues:

• CVE-2022-26354: Fixed a memory leak due to a missing virtqueue detach on error. (bsc#1198712)
• CVE-2021-3929: Fixed an use-after-free in nvme DMA reentrancy issue. (bsc#1193880)
• CVE-2023-0330: Fixed a stack overflow due to a DMA reentrancy issue. (bsc#1207205)
• CVE-2020-13754: Fixed a DoS due to an OOB access during mmio operations. (bsc#1172382)
• CVE-2023-3354: Fixed a remote unauthenticated DoS due to an improper I/O watch removal in VNC TLS handshake. (bsc#1212850)
• CVE-2023-3180: Fixed a heap buffer overflow in virtio_crypto_sym_op_helper(). (bsc#1213925)
• CVE-2021-3638: Fixed an out-of-bounds write due to an inconsistent check in ati_2d_blt(). (bsc#1188609)
• CVE-2021-3750: Fixed an use-after-free in DMA reentrancy issue. (bsc#1190011)
• CVE-2023-2861: Fixed improper access control on special files in 9pfs (bsc#1212968).
• CVE-2022-1050: Fixed use-after-free issue in pvrdma_exec_cmd() (bsc#1197653).

The following non-security bug was fixed:

• Prepare for binutils update to 2.41 update (bsc#1215311).

This update for qemu fixes the following issues:

• CVE-2022-26354: Fixed a memory leak due to a missing virtqueue detach on error. (bsc#1198712)
• CVE-2021-3929: Fixed an use-after-free in nvme DMA reentrancy issue. (bsc#1193880)
• CVE-2023-0330: Fixed a stack overflow due to a DMA reentrancy issue. (bsc#1207205)
• CVE-2020-13754: Fixed a DoS due to an OOB access during mmio operations. (bsc#1172382)
• CVE-2023-3354: Fixed a remote unauthenticated DoS due to an improper I/O watch removal in VNC TLS handshake. (bsc#1212850)
• CVE-2023-3180: Fixed a heap buffer overflow in virtio_crypto_sym_op_helper(). (bsc#1213925)
• CVE-2023-2861: Fixed improper access control on special files in 9pfs (bsc#1212968).
• CVE-2022-1050: Fixed use-after-free issue in pvrdma_exec_cmd() (bsc#1197653).
• CVE-2021-3750: Fixed DMA reentrancy issue leads to use-after-free in hcd-ehci (bsc#1190011).

The following non-security bug was fixed:

• Prepare for binutils update to 2.41 update (bsc#1215311).

It was discovered that QEMU did not properly manage the guest drivers when shared buffers are not allocated. A malicious guest driver could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS and Ubuntu 22.10. (CVE-2022-1050)

It was discovered that QEMU did not properly check the size of the structure pointed to by the guest physical address pqxl. A malicious guest attacker could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS and Ubuntu 22.10. (CVE-2022-4144)

It was discovered that QEMU did not properly manage memory in the ACPI Error Record Serialization Table (ERST) device. A malicious guest attacker could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 22.10. (CVE-2022-4172)

It was discovered that QEMU did not properly manage memory when DMA memory writes happen repeatedly in the lsi53c895a device. A malicious guest attacker could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2023-0330)