# CVE-2026-8348: qemu vulnerability CVE-2026-8348 is fixed in 12 products on 1 platform, first by DEBIAN-CVE-2026-8348, released August 1, 2026. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2026-8348 - Priority: Routine - CVSS: 5.5 (MODERATE) - EPSS: n/a - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Jul 26, 2026 ## Description [7.2.0-42.el9] - migration: Enable multifd VFIO device state transfer by default for Exadata (Maciej S. Szmigiero) [Orabug: 39783645] - vfio/migration: Add x-migration-load-config-after-iter VFIO property (Maciej S. Szmigiero) [Orabug: 39783615] - tests/9p: add 3 xattr FID limit test cases (local fs driver) (Christian Schoenebeck) [Orabug: 39636027] {CVE-2026-8348} - tests/9p: add 3 xattr FID limit test cases (synth fs driver) (Christian Schoenebeck) [Orabug: 39636027] {CVE-2026-8348} - tests/9p: add virtio_9p_add_synth_driver_args() test client function (Christian Schoenebeck) [Orabug: 39636027] {CVE-2026-8348} - tests/9p: increase P9_MAX_SIZE for test client (Christian Schoenebeck) [Orabug: 39636027] {CVE-2026-8348} - hw/9pfs: add xattr count query interface to fs synth driver (Christian Schoenebeck) [Orabug: 39636027] {CVE-2026-8348} - hw/9pfs: enable xattr (mockup) support for synth fs driver (Christian Schoenebeck) [Orabug: 39636027] {CVE-2026-8348} - tests/9p: add Txattrcreate / Rxattrcreate test client functions (Christian Schoenebeck) [Orabug: 39636027] {CVE-2026-8348} - tests/9p: add Tclunk / Rclunk test client functions (Christian Schoenebeck) [Orabug: 39636027] {CVE-2026-8348} - tests/9p: add Tread / Rread test client functions (Christian Schoenebeck) [Orabug: 39636027] {CVE-2026-8348} - qemu-options: document 9pfs max_xattr option (Christian Schoenebeck) [Orabug: 39636027] {CVE-2026-8348} - hw/9pfs: add max_xattr option (Christian Schoenebeck) [Orabug: 39636027] {CVE-2026-8348} - hw/9pfs: add xattr FID limit to prevent memory exhaustion (Christian Schoenebeck) [Orabug: 39636027] {CVE-2026-8348} - hw/9pfs: cap Treaddir allocation (CVE-2026-9238) (Christian Schoenebeck) [Orabug: 39601986] {CVE-2026-9238} - 9pfs/xen: implement response_buffer_size callback (Christian Schoenebeck) [Orabug: 39601986] {CVE-2026-9238} - 9pfs/virtio: implement response_buffer_size callback (Christian Schoenebeck) [Orabug: 39601986] {CVE-2026-9238} - hw/9pfs: add response_buffer_size transport callback (Christian Schoenebeck) [Orabug: 39601986] {CVE-2026-9238} - hw/9pfs: cap negotiated msize to transport limit (Christian Schoenebeck) [Orabug: 39601986] {CVE-2026-9238} - 9pfs/xen: implement msize_limit callback (Christian Schoenebeck) [Orabug: 39601986] {CVE-2026-9238} - 9pfs/virtio: implement msize_limit callback (Christian Schoenebeck) [Orabug: 39601986] {CVE-2026-9238} - hw/9pfs: add msize_limit transport callback (Christian Schoenebeck) [Orabug: 39601986] {CVE-2026-9238} - 9pfs: fix missing rename lock in v9fs_co_readdir_many (CVE-2026-48004) (sin99xx) [Orabug: 39478419] {CVE-2026-48004} - tests/qtest/libqos: add qvirtqueue_reset_pool() for descriptor pool reset (Christian Schoenebeck) [Orabug: 39636027] {CVE-2026-8348} - libvduse: fix buffer overflow in vduse_queue_read_indirect_desc() (Stefano Garzarella) [Orabug: 39447322] {CVE-2026-6425} - libvhost-user: fix buffer overflow in virtqueue_read_indirect_desc() (Stefano Garzarella) [Orabug: 39447322] {CVE-2026-6425} - virtio-blk: add missing VIRTIO_BLK_T_SCSI_CMD size check (CVE-2026-48914) (Stefan Hajnoczi) [Orabug: 39522394] {CVE-2026-48914} [7.2.0-41.el9] - hw/virtio/virtio-crypto: validate asym session key size (Miguel Luis) [Orabug: 39480090] - virtio-net: validate RSS queue selectors in parser (Miguel Luis) [Orabug: 39480096] - ui: fix validation of VNC extended clipboard data length (Heechan Kang) [Orabug: 39442988] {CVE-2026-8343} - ui/vnc: fix OOB read updating VNC update frequency stats (Daniel P. Berrange) [Orabug: 39447326] {CVE-2026-48003} - ui/vnc: fix OOB write in lossy rect worker code (Daniel P. Berrange) [Orabug: 39447332] {CVE-2026-48002} - ui/vnc: fix OOB write in VNC stats array (Daniel P. Berrange) [Orabug: 39447332] {CVE-2026-48002} - tests/unit/test-blockjob: Disable complete_in_standby test (Peter Maydell) [Orabug: 39447937] - virtio-scsi: reset SCSI devices from main loop thread (Stefan Hajnoczi) [Orabug: 39296894] - dma-helpers: prevent dma_blk_cb() vs dma_aio_cancel() race (Stefan Hajnoczi) [Orabug: 39296894] - scsi: protect req->aiocb with AioContext lock (Stefan Hajnoczi) [Orabug: 39296894] - virtio-iommu: add error check before assert (Manos Pitsidianakis) [Orabug: 39447244] - hw/virtio-iommu: Fix potential OOB access in virtio_iommu_handle_command() (Eric Auger) [Orabug: 39447244] - thread-pool: Allow at least 1 thread in thread_pool_adjust_max_threads_to_work() (Maciej S. Szmigiero) [Orabug: 39429151] - lsi53c895a: keep a reference to the device while SCRIPTS execute (Paolo Bonzini) [Orabug: 37517793] {CVE-2024-6519} - hw/scsi/lsi53c895a: fix memory leak in lsi_scsi_realize() (Zheng Huang) [Orabug: 37517793] {CVE-2024-6519} - hw/scsi/lsi53c895a: bump instruction limit in scripts processing to fix regression (Fiona Ebner) [Orabug: 37517793] {CVE-2024-6519} - hw/scsi/lsi53c895a: add timer to scripts processing (Sven Schnelle) [Orabug: 37517793] {CVE-2024-6519} - hw/scsi/lsi53c895a: add missing decrement of reentrancy counter (Sven Schnelle) [Orabug: 39429302] - hw/i386/amd_iommu: Move IOAPIC memory region initialization to the end (Sairaj Kodilkar) [Orabug: 39422329] - virtio-scsi: pass the same cdb_size to virtio_scsi_pop_req and virtio_scsi_handle_cmd_req_prepare (Paolo Bonzini) [Orabug: 39414097] {CVE-2026-5763} - softmmu: Support concurrent bounce buffers (Mattias Nissler) [Orabug: 37509310] {CVE-2024-8612} - system/physmem: Per-AddressSpace bounce buffering (Mattias Nissler) [Orabug: 37509310] {CVE-2024-8612} - system/physmem: Propagate AddressSpace to MapClient helpers (Mattias Nissler) [Orabug: 37509310] {CVE-2024-8612} - hw/pci: Ignore config-space data between 0x804-0x807 (Joao Martins) - hostmem-memfd: Documentation for memory-backend-memfd 'keep' property (William Roche) [Orabug: 38769121] - hostmem-memfd: Wire up MFD_MF_KEEP_UE_MAPPED via 'keep' property (William Roche) [Orabug: 38769121] [7.2.0-38.el9] - multifd: Save number of pages for batch context pages (Elena Ufimtseva) [Orabug: 39001115] - migration: Introduce MigrateCleanupCtx for cleanup thread (Elena Ufimtseva) [Orabug: 39001115] - migration: Move qemu_mmap_node/qemu_munmap_node (Elena Ufimtseva) [Orabug: 39001115] - multifd: Allocate a large chunk for pages->cached (Elena Ufimtseva) [Orabug: 39214550] - migration: Defer multifd and hash cache cleanup (Elena Ufimtseva) [Orabug: 39215178] - multifd: Split multifd_send_shutdown (Elena Ufimtseva) [Orabug: 39215178] - migration: Rename background cleanup thread and mutex/cond (Elena Ufimtseva) [Orabug: 39215178] ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | qemu Debian 13.5 (trixie) | 1:10.0.12+ds-0+deb13u1 | [DEBIAN-CVE-2026-8348](https://patchblox.com/security/data/fix/linux/debian-cve-2026-8348.md) | Aug 1, 2026 | | Linux | qemu Debian 14 | 1:11.0.3+ds-1 | [DEBIAN-CVE-2026-8348](https://patchblox.com/security/data/fix/linux/debian-cve-2026-8348.md) | Aug 1, 2026 | | Linux | qemu-guest-agent ol 9 | 31:7.2.0-42.el9 | [ELSA-2026-500220](https://patchblox.com/security/data/fix/linux/elsa-2026-500220.md) | Aug 19, 2026 | | Linux | qemu-img ol 9 | 31:7.2.0-42.el9 | [ELSA-2026-500220](https://patchblox.com/security/data/fix/linux/elsa-2026-500220.md) | Aug 19, 2026 | | Linux | qemu-kvm ol 9 | 31:7.2.0-42.el9 | [ELSA-2026-500220](https://patchblox.com/security/data/fix/linux/elsa-2026-500220.md) | Aug 19, 2026 | | Linux | qemu-kvm-block-curl ol 9 | 31:7.2.0-42.el9 | [ELSA-2026-500220](https://patchblox.com/security/data/fix/linux/elsa-2026-500220.md) | Aug 19, 2026 | | Linux | qemu-kvm-block-iscsi ol 9 | 31:7.2.0-42.el9 | [ELSA-2026-500220](https://patchblox.com/security/data/fix/linux/elsa-2026-500220.md) | Aug 19, 2026 | | Linux | qemu-kvm-block-rbd ol 9 | 31:7.2.0-42.el9 | [ELSA-2026-500220](https://patchblox.com/security/data/fix/linux/elsa-2026-500220.md) | Aug 19, 2026 | | Linux | qemu-kvm-block-ssh ol 9 | 31:7.2.0-42.el9 | [ELSA-2026-500220](https://patchblox.com/security/data/fix/linux/elsa-2026-500220.md) | Aug 19, 2026 | | Linux | qemu-kvm-common ol 9 | 31:7.2.0-42.el9 | [ELSA-2026-500220](https://patchblox.com/security/data/fix/linux/elsa-2026-500220.md) | Aug 19, 2026 | | Linux | qemu-kvm-core ol 9 | 31:7.2.0-42.el9 | [ELSA-2026-500220](https://patchblox.com/security/data/fix/linux/elsa-2026-500220.md) | Aug 19, 2026 | | Linux | qemu-kvm-device-usb-host ol 9 | 31:7.2.0-42.el9 | [ELSA-2026-500220](https://patchblox.com/security/data/fix/linux/elsa-2026-500220.md) | Aug 19, 2026 | | Linux | qemu-virtiofsd ol 9 | 31:7.2.0-42.el9 | [ELSA-2026-500220](https://patchblox.com/security/data/fix/linux/elsa-2026-500220.md) | Aug 19, 2026 | --- Data as of 2026-11-08T00:53:09Z UTC. 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