{
  "cveId": "CVE-2022-50446",
  "url": "https://patchblox.com/security/cve/CVE-2022-50446",
  "summary": "CVE-2022-50446 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-50446, released October 1, 2025. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  ARC: mm: fix leakage of memory allocated for PTE...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  ARC: mm: fix leakage of memory allocated for PTE  Since commit d9820ff (\u0022ARC: mm: switch pgtable_t back to struct page *\u0022) a memory leakage problem occurs. Memory allocated for page table entries not released during process termination. This issue can be reproduced by a small program that allocates a large amount of memory. After several runs, you\u0027ll see that the amount of free memory has reduced and will continue to reduce after each run. All ARC CPUs are effected by this issue. The issue was introduced since the kernel stable release v5.15-rc1.  As described in commit d9820ff after switch pgtable_t back to struct page *, a pointer to \u0022struct page\u0022 and appropriate functions are used to allocate and free a memory page for PTEs, but the pmd_pgtable macro hasn\u0027t changed and returns the direct virtual address from the PMD (PGD) entry. Than this address used as a parameter in the __pte_free() and as a result this function couldn\u0027t release memory page allocated for PTEs.  Fix this issue by changing the pmd_pgtable macro and returning pointer to struct page.",
  "published": "2025-10-01T12:15:37Z",
  "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": 0.00157,
  "epssPercentile": 0.04905,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.0.7-1",
      "fix": "DEBIAN-CVE-2022-50446",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-50446",
      "released": "2025-10-01T12:15:37Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.0.7-1",
      "fix": "DEBIAN-CVE-2022-50446",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-50446",
      "released": "2025-10-01T12:15:37Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.0.7-1",
      "fix": "DEBIAN-CVE-2022-50446",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-50446",
      "released": "2025-10-01T12:15:37Z"
    }
  ],
  "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"
  }
}