CVE-2024-26328

An issue was discovered in QEMU 7.1.0 through 8.2.1. register_vfs in hw/pci/pcie_sriov.c does not set NumVFs to PCI_SRIOV_TOTAL_VF, and thus interaction with hw/nvme/ctrl.c is mishandled.

An issue was discovered in QEMU 7.1.0 through 8.2.1. register_vfs in hw/pci/pcie_sriov.c does not set NumVFs to PCI_SRIOV_TOTAL_VF, and thus interaction with hw/nvme/ctrl.c is mishandled.

An issue was discovered in QEMU 7.1.0 through 8.2.1. register_vfs in hw/pci/pcie_sriov.c does not set NumVFs to PCI_SRIOV_TOTAL_VF, and thus interaction with hw/nvme/ctrl.c is mishandled.

A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device. This flaw allows a crafted guest driver to allocate and initialize a huge number of page tables to be used as a ring of descriptors for CQ and async events, potentially leading to an out-of-bounds read and crash of QEMU. (CVE-2023-1544) A DMA reentrancy issue leading to a use-after-free error was found in the e1000e NIC emulation code in QEMU. This issue could allow a privileged guest user to crash the QEMU process on the host, resulting in a denial of service. (CVE-2023-3019) A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages. A wrong exit condition may lead to an infinite loop when inflating an attacker controlled zlib buffer in the inflate_buffer function. This could allow a remote authenticated client who is able to send a clipboard to the VNC server to trigger a denial of service. (CVE-2023-3255) A bug in QEMU could cause a guest I/O operation otherwise addressed to an arbitrary disk offset to be targeted to offset 0 instead (potentially overwriting the VM's boot code). This could be used, for example, by L2 guests with a virtual disk (vdiskL2) stored on a virtual disk of an L1 (vdiskL1) hypervisor to read and/or write data to LBA 0 of vdiskL1, potentially gaining control of L1 at its next reboot. (CVE-2023-5088) A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages. The qemu_clipboard_request() function can be reached before vnc_server_cut_text_caps() was called and had the chance to initialize the clipboard peer, leading to a NULL pointer dereference. This could allow a malicious authenticated VNC client to crash QEMU and trigger a denial of service. (CVE-2023-6683) A stack based buffer overflow was found in the virtio-net device of QEMU. This issue occurs when flushing TX in the virtio_net_flush_tx function if guest features VIRTIO_NET_F_HASH_REPORT, VIRTIO_F_VERSION_1 and VIRTIO_NET_F_MRG_RXBUF are enabled. This could allow a malicious user to overwrite local variables allocated on the stack. Specifically, the out_sg variable could be used to read a part of process memory and send it to the wire, causing an information leak. (CVE-2023-6693) QEMU through 8.0.0 could trigger a division by zero in scsi_disk_reset in hw/scsi/scsi-disk.c because scsi_disk_emulate_mode_select does not prevent s->qdev.blocksize from being 256. This stops QEMU and the guest immediately. (CVE-2023-42467) QEMU before 8.2.0 has an integer underflow, and resultant buffer overflow, via a TI command when an expected non-DMA transfer length is less than the length of the available FIFO data. This occurs in esp_do_nodma in hw/scsi/esp.c because of an underflow of async_len. (CVE-2024-24474) An issue was discovered in QEMU 7.1.0 through 8.2.1. register_vfs in hw/pci/pcie_sriov.c mishandles the situation where a guest writes NumVFs greater than TotalVFs, leading to a buffer overflow in VF implementations. (CVE-2024-26327) An issue was discovered in QEMU 7.1.0 through 8.2.1. register_vfs in hw/pci/pcie_sriov.c does not set NumVFs to PCI_SRIOV_TOTAL_VF, and thus interaction with hw/nvme/ctrl.c is mishandled. (CVE-2024-26328) A double free vulnerability was found in QEMU virtio devices (virtio-gpu, virtio-serial-bus, virtio-crypto), where the mem_reentrancy_guard flag insufficiently protects against DMA reentrancy issues. This issue could allow a malicious privileged guest user to crash the QEMU process on the host, resulting in a denial of service or allow arbitrary code execution within the context of the QEMU process on the host. (CVE-2024-3446) A heap-based buffer overflow was found in the SDHCI device emulation of QEMU. The bug is triggered when both s->data_count and the size of s->fifo_buffer are set to 0x200, leading to an out-of-bound access. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition. (CVE-2024-3447) A flaw…

These are all security issues fixed in the qemu-8.2.2-2.1 package on the GA media of openSUSE Tumbleweed.

This update for qemu fixes the following issues:

• CVE-2024-26327: Fixed buffer overflow via invalid SR/IOV NumVFs value (bsc#1220062).
• CVE-2024-24474: Fixed integer overflow results in buffer overflow via SCSI command (bsc#1220134).
• CVE-2023-6693: Fixed stack buffer overflow in virtio_net_flush_tx() (bsc#1218484).
• CVE-2023-1544: Fixed out-of-bounds read in pvrdma_ring_next_elem_read() (bsc#1209554).
• CVE-2024-26328: Fixed invalid NumVFs value handled in NVME SR/IOV implementation (bsc#1220065).

The following non-security bug was fixed:

• Removing in-use mediated device should fail with error message instead of hang (bsc#1205316).

This update for qemu fixes the following issues:

• Update to version 8.2.5:

  • target/loongarch: fix a wrong print in cpu dump
  • ui/sdl2: Allow host to power down screen
  • target/i386: fix SSE and SSE2 feature check
  • target/i386: fix xsave.flat from kvm-unit-tests
  • disas/riscv: Decode all of the pmpcfg and pmpaddr CSRs
  • target/riscv/kvm.c: Fix the hart bit setting of AIA
  • target/riscv: rvzicbo: Fixup CBO extension register calculation
  • target/riscv: do not set mtval2 for non guest-page faults
  • target/riscv: prioritize pmp errors in raise_mmu_exception()
  • target/riscv: rvv: Remove redudant SEW checking for vector fp narrow/widen instructions
  • target/riscv: rvv: Check single width operator for vfncvt.rod.f.f.w
  • target/riscv: rvv: Check single width operator for vector fp widen instructions
  • target/riscv: rvv: Fix Zvfhmin checking for vfwcvt.f.f.v and vfncvt.f.f.w instructions
  • target/riscv/cpu.c: fix Zvkb extension config
  • target/riscv: Fix the element agnostic function problem
  • target/riscv/kvm: tolerate KVM disable ext errors
  • hw/intc/riscv_aplic: APLICs should add child earlier than realize
  • iotests: test NBD+TLS+iothread
  • qio: Inherit follow_coroutine_ctx across TLS
  • target/arm: Disable SVE extensions when SVE is disabled
  • hw/intc/arm_gic: Fix handling of NS view of GICC_APR<n>
  • hvf: arm: Fix encodings for ID_AA64PFR1_EL1 and debug System registers
  • gitlab: use 'setarch -R' to workaround tsan bug
  • gitlab: use $MAKE instead of 'make'
  • dockerfiles: add 'MAKE' env variable to remaining containers
  • gitlab: Update msys2-64bit runner tags
  • target/i386: no single-step exception after MOV or POP SS

• Update to version 8.2.4.

  • target/sh4: Fix SUBV opcode
  • target/sh4: Fix ADDV opcode
  • hw/arm/npcm7xx: Store derivative OTP fuse key in little endian
  • hw/dmax/xlnx_dpdma: fix handling of address_extension descriptor fields
  • hw/ufs: Fix buffer overflow bug
  • tests/avocado: update sunxi kernel from armbian to 6.6.16
  • target/loongarch/cpu.c: typo fix: expection
  • backends/cryptodev-builtin: Fix local_error leaks
  • nbd/server: Mark negotiation functions as coroutine_fn
  • nbd/server: do not poll within a coroutine context
  • linux-user: do_setsockopt: fix SOL_ALG.ALG_SET_KEY
  • target/riscv/kvm: change timer regs size to u64
  • target/riscv/kvm: change KVM_REG_RISCV_FP_D to u64
  • target/riscv/kvm: change KVM_REG_RISCV_FP_F to u32

• Update to version 8.2.3.

  • Update version for 8.2.3 release
  • ppc/spapr: Initialize max_cpus limit to SPAPR_IRQ_NR_IPIS.
  • ppc/spapr: Introduce SPAPR_IRQ_NR_IPIS to refer IRQ range for CPU IPIs.
  • hw/pci-host/ppc440_pcix: Do not expose a bridge device on PCI bus
  • hw/isa/vt82c686: Keep track of PIRQ/PINT pins separately
  • virtio-pci: fix use of a released vector
  • linux-user/x86_64: Handle the vsyscall page in open_self_maps_{2,4}
  • hw/audio/virtio-snd: Remove unused assignment
  • hw/net/net_tx_pkt: Fix overrun in update_sctp_checksum()
  • hw/sd/sdhci: Do not update TRNMOD when Command Inhibit (DAT) is set
  • hw/net/lan9118: Fix overflow in MIL TX FIFO
  • hw/net/lan9118: Replace magic '2048' value by MIL_TXFIFO_SIZE definition
  • backends/cryptodev: Do not abort for invalid session ID
  • hw/misc/applesmc: Fix memory leak in reset() handler
  • hw/block/nand: Fix out-of-bound access in NAND block buffer
  • hw/block/nand: Have blk_load() take unsigned offset and return boolean
  • hw/block/nand: Factor nand_load_iolen() method out
  • qemu-options: Fix CXL Fixed Memory Window interleave-granularity typo
  • hw/virtio/virtio-crypto: Protect from DMA re-entrancy bugs
  • hw/char/virtio-serial-bus: Protect from DMA re-entrancy bugs
  • hw/display/virtio-gpu: Protect from DMA re-entrancy bugs
  • mirror: Don't call job_pause_point() under graph lock (bsc#1224179)

• Backports and bugfixes:

  • hw/net/net_tx_pkt: Fix overrun in update_sctp_checksum() (bsc#1222841, CVE-2024-3567) *…

It was discovered that QEMU did not properly handle certain memory operations, which could result in a buffer overflow. An attacker could potentially use this issue to cause a denial of service. (CVE-2024-26327)

It was discovered that QEMU did not properly handle certain memory operations, which could result in an out-of-bounds memory access. An attacker could potentially use this issue to cause a denial of service. (CVE-2024-26328)