{
  "cveId": "CVE-2023-52910",
  "url": "https://patchblox.com/security/cve/CVE-2023-52910",
  "summary": "CVE-2023-52910 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-52910, released August 21, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  iommu/iova: Fix alloc iova overflows issue  In _...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  iommu/iova: Fix alloc iova overflows issue  In __alloc_and_insert_iova_range, there is an issue that retry_pfn overflows. The value of iovad-\u003Eanchor.pfn_hi is ~0UL, then when iovad-\u003Ecached_node is iovad-\u003Eanchor, curr_iova-\u003Epfn_hi \u002B 1 will overflow. As a result, if the retry logic is executed, low_pfn is updated to 0, and then new_pfn \u003C low_pfn returns false to make the allocation successful.  This issue occurs in the following two situations: 1. The first iova size exceeds the domain size. When initializing iova domain, iovad-\u003Ecached_node is assigned as iovad-\u003Eanchor. For example, the iova domain size is 10M, start_pfn is 0x1_F000_0000, and the iova size allocated for the first time is 11M. The following is the log information, new-\u003Epfn_lo is smaller than iovad-\u003Ecached_node.  Example log as follows: [  223.798112][T1705487] sh: [name:iova\u0026]__alloc_and_insert_iova_range start_pfn:0x1f0000,retry_pfn:0x0,size:0xb00,limit_pfn:0x1f0a00 [  223.799590][T1705487] sh: [name:iova\u0026]__alloc_and_insert_iova_range success start_pfn:0x1f0000,new-\u003Epfn_lo:0x1efe00,new-\u003Epfn_hi:0x1f08ff  2. The node with the largest iova-\u003Epfn_lo value in the iova domain is deleted, iovad-\u003Ecached_node will be updated to iovad-\u003Eanchor, and then the alloc iova size exceeds the maximum iova size that can be allocated in the domain.  After judging that retry_pfn is less than limit_pfn, call retry_pfn\u002B1 to fix the overflow issue.",
  "published": "2024-08-21T07:15:06Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00245,
  "epssPercentile": 0.15811,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.7-1",
      "fix": "DEBIAN-CVE-2023-52910",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-52910",
      "released": "2024-08-21T07:15:06Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.1.7-1",
      "fix": "DEBIAN-CVE-2023-52910",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-52910",
      "released": "2024-08-21T07:15:06Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.1.7-1",
      "fix": "DEBIAN-CVE-2023-52910",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-52910",
      "released": "2024-08-21T07:15:06Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}