{
  "public_date" : "2026-02-18T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: drm/exynos: vidi: use ctx->lock to protect struct vidi_context member variables related to memory alloc/free",
    "id" : "2440672",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2440672"
  },
  "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\ndrm/exynos: vidi: use ctx->lock to protect struct vidi_context member variables related to memory alloc/free\nExynos Virtual Display driver performs memory alloc/free operations\nwithout lock protection, which easily causes concurrency problem.\nFor example, use-after-free can occur in race scenario like this:\n```\nCPU0CPU1CPU2\n------------\nvidi_connection_ioctl()\nif (vidi->connection) // true\ndrm_edid = drm_edid_alloc(); // alloc drm_edid\n...\nctx->raw_edid = drm_edid;\n...\ndrm_mode_getconnector()\ndrm_helper_probe_single_connector_modes()\nvidi_get_modes()\nif (ctx->raw_edid) // true\ndrm_edid_dup(ctx->raw_edid);\nif (!drm_edid) // false\n...\nvidi_connection_ioctl()\nif (vidi->connection) // false\ndrm_edid_free(ctx->raw_edid); // free drm_edid\n...\ndrm_edid_alloc(drm_edid->edid)\nkmemdup(edid); // UAF!!\n...\n```\nTo prevent these vulns, at least in vidi_context, member variables related\nto memory alloc/free should be protected with ctx->lock." ],
  "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" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Not affected",
    "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-2026-23227\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-23227\nhttps://lore.kernel.org/linux-cve-announce/2026021807-CVE-2026-23227-6986@gregkh/T" ],
  "name" : "CVE-2026-23227",
  "csaw" : false
}