{
  "threat_severity" : "Moderate",
  "public_date" : "2025-02-12T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: gfs2: Truncate address space when flipping GFS2_DIF_JDATA flag",
    "id" : "2345213",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2345213"
  },
  "cvss3" : {
    "cvss3_base_score" : "5.3",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H",
    "status" : "draft"
  },
  "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\ngfs2: Truncate address space when flipping GFS2_DIF_JDATA flag\nTruncate an inode's address space when flipping the GFS2_DIF_JDATA flag:\ndepending on that flag, the pages in the address space will either use\nbuffer heads or iomap_folio_state structs, and we cannot mix the two." ],
  "statement" : "The bug could happen only if cluster of computers to simultaneously use a block device that is shared between them using gfs2 file system. The security impact is limited, because only corruption of this file-system could happen.",
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 10",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Out of support scope",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Out of support scope",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Out of support scope",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Out of support scope",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Out of support scope",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Not affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2025-21699\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-21699\nhttps://lore.kernel.org/linux-cve-announce/2025021202-CVE-2025-21699-029f@gregkh/T" ],
  "name" : "CVE-2025-21699",
  "mitigation" : {
    "value" : "To mitigate this issue, prevent module gfs2 from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.",
    "lang" : "en:us"
  },
  "csaw" : false
}