{
  "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-2023-53052",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-53052",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2025-05-02T15:55:07.755Z",
    "updatedAt": "2026-08-05T09:12:33.775Z",
    "importedAt": "2026-10-24T01:57:03.413Z",
    "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": "cifs: fix use-after-free bug in refresh_cache_worker()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: fix use-after-free bug in refresh_cache_worker()\n\nThe UAF bug occurred because we were putting DFS root sessions in\ncifs_umount() while DFS cache refresher was being executed.\n\nMake DFS root sessions have same lifetime as DFS tcons so we can avoid\nthe use-after-free bug is DFS cache refresher and other places that\nrequire IPCs to get new DFS referrals on.  Also, get rid of mount\ngroup handling in DFS cache as we no longer need it.\n\nThis fixes below use-after-free bug catched by KASAN\n\n[ 379.946955] BUG: KASAN: use-after-free in __refresh_tcon.isra.0+0x10b/0xc10 [cifs]\n[ 379.947642] Read of size 8 at addr ffff888018f57030 by task kworker/u4:3/56\n[ 379.948096]\n[ 379.948208] CPU: 0 PID: 56 Comm: kworker/u4:3 Not tainted 6.2.0-rc7-lku #23\n[ 379.948661] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS\nrel-1.16.0-0-gd239552-rebuilt.opensuse.org 04/01/2014\n[ 379.949368] Workqueue: cifs-dfscache refresh_cache_worker [cifs]\n[ 379.949942] Call Trace:\n[ 379.950113] <TASK>\n[ 379.950260] dump_stack_lvl+0x50/0x67\n[ 379.950510] print_report+0x16a/0x48e\n[ 379.950759] ? __virt_addr_valid+0xd8/0x160\n[ 379.951040] ? __phys_addr+0x41/0x80\n[ 379.951285] kasan_report+0xdb/0x110\n[ 379.951533] ? __refresh_tcon.isra.0+0x10b/0xc10 [cifs]\n[ 379.952056] ? __refresh_tcon.isra.0+0x10b/0xc10 [cifs]\n[ 379.952585] __refresh_tcon.isra.0+0x10b/0xc10 [cifs]\n[ 379.953096] ? __pfx___refresh_tcon.isra.0+0x10/0x10 [cifs]\n[ 379.953637] ? __pfx___mutex_lock+0x10/0x10\n[ 379.953915] ? lock_release+0xb6/0x720\n[ 379.954167] ? __pfx_lock_acquire+0x10/0x10\n[ 379.954443] ? refresh_cache_worker+0x34e/0x6d0 [cifs]\n[ 379.954960] ? __pfx_wb_workfn+0x10/0x10\n[ 379.955239] refresh_cache_worker+0x4ad/0x6d0 [cifs]\n[ 379.955755] ? __pfx_refresh_cache_worker+0x10/0x10 [cifs]\n[ 379.956323] ? __pfx_lock_acquired+0x10/0x10\n[ 379.956615] ? read_word_at_a_time+0xe/0x20\n[ 379.956898] ? lockdep_hardirqs_on_prepare+0x12/0x220\n[ 379.957235] process_one_work+0x535/0x990\n[ 379.957509] ? __pfx_process_one_work+0x10/0x10\n[ 379.957812] ? lock_acquired+0xb7/0x5f0\n[ 379.958069] ? __list_add_valid+0x37/0xd0\n[ 379.958341] ? __list_add_valid+0x37/0xd0\n[ 379.958611] worker_thread+0x8e/0x630\n[ 379.958861] ? __pfx_worker_thread+0x10/0x10\n[ 379.959148] kthread+0x17d/0x1b0\n[ 379.959369] ? __pfx_kthread+0x10/0x10\n[ 379.959630] ret_from_fork+0x2c/0x50\n[ 379.959879] </TASK>",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "6916881f443f67f6893b504fa2171468c8aed915",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5a89d81c1a3c152837ea204fd29572228e54ce0b"
            },
            {
              "version": "6916881f443f67f6893b504fa2171468c8aed915",
              "status": "affected",
              "versionType": "git",
              "lessThan": "396935de145589c8bfe552fa03a5e38604071829"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.2",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.2"
            },
            {
              "version": "6.2.8",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.2.*"
            },
            {
              "version": "6.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}