{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-23056",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-23056",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-02-04T16:07:34.787Z",
    "updatedAt": "2026-05-11T21:59:08.964Z",
    "importedAt": "2026-10-24T01:58:02.025Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "uacce: implement mremap in uacce_vm_ops to return -EPERM",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nuacce: implement mremap in uacce_vm_ops to return -EPERM\n\nThe current uacce_vm_ops does not support the mremap operation of\nvm_operations_struct. Implement .mremap to return -EPERM to remind\nusers.\n\nThe reason we need to explicitly disable mremap is that when the\ndriver does not implement .mremap, it uses the default mremap\nmethod. This could lead to a risk scenario:\n\nAn application might first mmap address p1, then mremap to p2,\nfollowed by munmap(p1), and finally munmap(p2). Since the default\nmremap copies the original vma's vm_private_data (i.e., q) to the\nnew vma, both munmap operations would trigger vma_close, causing\nq->qfr to be freed twice(qfr will be set to null here, so repeated\nrelease is ok).",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "015d239ac0142ad0e26567fd890ef8d171f13709",
              "status": "affected",
              "versionType": "git",
              "lessThan": "78d99f062d42e3af2ca46bde1a8e46e0dfd372e3"
            },
            {
              "version": "015d239ac0142ad0e26567fd890ef8d171f13709",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ebfa85658a39b49ec3901ceea7535b73aa0429e6"
            },
            {
              "version": "015d239ac0142ad0e26567fd890ef8d171f13709",
              "status": "affected",
              "versionType": "git",
              "lessThan": "75b29bdc935ff93b8e8bf6f6b4d8a4810b26e06f"
            },
            {
              "version": "015d239ac0142ad0e26567fd890ef8d171f13709",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4c042bc71474dbe417c268f4bfb8ec196f802f07"
            },
            {
              "version": "015d239ac0142ad0e26567fd890ef8d171f13709",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a407ddd61b3e6afc5ccfcd1478797171cf5686ee"
            },
            {
              "version": "015d239ac0142ad0e26567fd890ef8d171f13709",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ba29b59d124e725e0377f09b2044909c91d657a1"
            },
            {
              "version": "015d239ac0142ad0e26567fd890ef8d171f13709",
              "status": "affected",
              "versionType": "git",
              "lessThan": "02695347be532b628f22488300d40c4eba48b9b7"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.7",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.7"
            },
            {
              "version": "5.10.249",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.199",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.162",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.122",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.68",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.8",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "6.19",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}