{
  "cveId": "CVE-2026-61476",
  "url": "https://patchblox.com/security/cve/CVE-2026-61476",
  "summary": "CVE-2026-61476 is fixed in 32 products on 1 platform, first by DEBIAN-CVE-2026-61476, released August 31, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "qemu vulnerability",
  "description": "Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities:\nCVE-2026-93834:\n\tA use-after-free vulnerability was found in QEMU\u0027s 9pfs subsystem. A race condition between the main thread and a worker thread when processing concurrent Tlcreate and Twalk requests allows a malicious guest user to craft a fid path containing stale heap data, bypassing directory traversal restrictions and escaping the shared directory boundary. This can lead to arbitrary host file read/write and code execution (VM escape) as the QEMU process user.\n\nCVE-2026-84788:\n\tio/channel-socket: do not treat a zero length write as an error\n\nCVE-2026-81627:\n\tA flaw was found in QEMU. The VAPIC setup hypercall in hw/i386/vapic.c does not validate that the writable RAM alias remains within the option ROM window. A privileged guest user on a Q35/KVM machine can position this alias over locked SMRAM, bypassing chipset D_LCK protection and injecting code into System Management Mode memory.\n\nCVE-2026-77913:\n\thw/display/vga: fix text-mode OOB write after a graphics surface switch\n\nCVE-2026-66900:\n\thw/net/virtio-net: strip trailing padding when caching RSC segment\n\nCVE-2026-66899:\n\tvirtio-balloon: fix free-page BH teardown on unrealize\n\nCVE-2026-63322:\n\tNOTE: https://gitlab.com/qemu-project/qemu/-/work_items/3607\nNOTE: Fixed by: https://gitlab.com/qemu-project/qemu/-/commit/4727cc883b7e81d2c30b9801af54482d65b84292 (v11.1.0-rc2)\nNOTE: Fixed by: https://gitlab.com/qemu-project/qemu/-/commit/95b9a1bf26fef7c44f4925f78ade7fa824ed5e76 (v11.0.4)\n\nCVE-2026-63321:\n\tNOTE: Fixed by: https://gitlab.com/qemu-project/qemu/-/commit/a6e0519ea8ed6fc84fab9bf9ca82c7a55780f880 (v11.1.0-rc2)\nNOTE: Fixed by: https://gitlab.com/qemu-project/qemu/-/commit/52c7bb369b23dfcafb6e6d90665c777797b55e88 (v11.1.0-rc2)\nNOTE: Fixed by: https://gitlab.com/qemu-project/qemu/-/commit/f348425fddae38e0c1d6823501890acfb2a3bfb1 (v11.0.4)\nNOTE: Fixed by: https://gitlab.com/qemu-project/qemu/-/commit/9a06bb17256c0a38f0b53025bf804d2e2035f93f (v11.0.4)\n\nCVE-2026-63320:\n\tHost-side AddressSanitizer heap-buffer-overflow READ in current QEMU master through the virtio-net-pci receive filtering path on q35. The crash is in receive_filter().\n\nCVE-2026-63110:\n\tNOTE: Fixed by: https://gitlab.com/qemu-project/qemu/-/commit/b9d248dfaca5e31377ea4f7204aae788a050bafd (v11.1.0-rc2)\nNOTE: Fixed by: https://gitlab.com/qemu-project/qemu/-/commit/82520d7759557062a5fae2211e3c79bbd5f01ed3 (v11.0.4)\n\nCVE-2026-61476:\n\tNOTE: https://gitlab.com/qemu-project/qemu/-/work_items/3875\nNOTE: Fixed by: https://gitlab.com/qemu-project/qemu/-/commit/f404bf0e6504e0412a00ea64708f17d2a5e3f869 (v11.1.0-rc2)\nNOTE: Fixed by: https://gitlab.com/qemu-project/qemu/-/commit/a4abe1f1fa6f465b64fb400bea14c72bd5e32ac9 (v11.0.4)\n\nCVE-2026-61402:\n\tNOTE: Fixed by: https://gitlab.com/qemu-project/qemu/-/commit/733a98a552e4bd68932de1f58bd6ea39b57b261c (v11.1.0-rc2)\nNOTE: Fixed by: https://gitlab.com/qemu-project/qemu/-/commit/6680c5612401c1eaa49eba134d14d374fefeb9d4 (v11.0.4)\n\nCVE-2026-50624:\n\tNOTE: https://gitlab.com/qemu-project/qemu/-/work_items/3917\nNOTE: Fixed by: https://gitlab.com/qemu-project/qemu/-/commit/0be94d8d9c28e6b7235b34133d057090fe93be6c (v11.1.0-rc2)\nNOTE: Fixed by: https://gitlab.com/qemu-project/qemu/-/commit/88a0e5e45b41d407cf9adf1f2cf6f20f394a578d (v11.0.4)\n\nCVE-2026-18054:\n\tNOTE: Fixed by: https://gitlab.com/qemu-project/qemu/-/commit/1f24066fc88d33455ee54a20f29994d9e69997ba (v11.1.0-rc3)\nNOTE: Fixed by: https://gitlab.com/qemu-project/qemu/-/commit/5fbd2fe1cc54259d045d00d4966aa2db1ba990d6 (v11.0.4)\n\nCVE-2026-17588:\n\thw/usb/hcd-xhci: Set reentrancy guard in timer functions",
  "published": "2026-08-30T08:47:26Z",
  "severity": "important",
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
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      "product": "qemu",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "1:10.0.13\u002Bds-0\u002Bdeb13u1",
      "fix": "DEBIAN-CVE-2026-61476",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-61476",
      "released": "2026-08-31T01:06:46Z"
    },
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      "product": "qemu",
      "release": "Debian 14",
      "fixedVersion": "1:11.1.0\u002Bds-1",
      "fix": "DEBIAN-CVE-2026-61476",
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      "released": "2026-08-31T01:06:46Z"
    },
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      "released": "2026-11-07T01:06:07Z"
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    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}