{
  "threat_severity" : "Moderate",
  "public_date" : "2022-11-15T10:00:00Z",
  "bugzilla" : {
    "description" : "grub2: Buffer overflow in grub_font_construct_glyph() can lead to out-of-bound write and possible secure boot bypass",
    "id" : "2112975",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2112975"
  },
  "cvss3" : {
    "cvss3_base_score" : "8.2",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-122->CWE-787",
  "details" : [ "A buffer overflow was found in grub_font_construct_glyph(). A malicious crafted pf2 font can lead to an overflow when calculating the max_glyph_size value, allocating a smaller than needed buffer for the glyph, this further leads to a buffer overflow and a heap based out-of-bounds write. An attacker may use this vulnerability to circumvent the secure boot mechanism.", "A flaw was found where a maliciously crafted pf2 font could lead to an out-of-bounds write in grub2. A successful attack can lead to memory corruption and secure boot circumvention." ],
  "statement" : "Grub code needs to be updated after installing the relevant RPM.\nFor RHEL systems installed on machines with EFI based BIOS : sudo grub2-mkconfig -o /boot/efi/EFI/redhat/grub.cfg\nFor RHEL systems installed on machines with legacy (msdos) based BIOS : sudo grub2-mkconfig -o /boot/grub2/grub.cfg\nFor BIOS based systems, after completing yum update, grub2-install needs to be run against the device where the boot partition is, for example, grub2-install /dev/vda.",
  "acknowledgement" : "Red Hat would like to thank Zhang Boyang for reporting this issue.",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2024-04-23T00:00:00Z",
    "advisory" : "RHSA-2024:2002",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7",
    "package" : "grub2-1:2.02-0.87.el7_9.14"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2023-01-09T00:00:00Z",
    "advisory" : "RHSA-2023:0049",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "package" : "grub2-1:2.02-142.el8_7.1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions",
    "release_date" : "2022-11-16T00:00:00Z",
    "advisory" : "RHSA-2022:8494",
    "cpe" : "cpe:/o:redhat:rhel_e4s:8.1",
    "package" : "grub2-1:2.02-87.el8_1.11"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.2 Advanced Update Support",
    "release_date" : "2022-12-06T00:00:00Z",
    "advisory" : "RHSA-2022:8800",
    "cpe" : "cpe:/o:redhat:rhel_aus:8.2",
    "package" : "grub2-1:2.02-87.el8_2.11"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.2 Telecommunications Update Service",
    "release_date" : "2022-12-06T00:00:00Z",
    "advisory" : "RHSA-2022:8800",
    "cpe" : "cpe:/o:redhat:rhel_tus:8.2",
    "package" : "grub2-1:2.02-87.el8_2.11"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions",
    "release_date" : "2022-12-06T00:00:00Z",
    "advisory" : "RHSA-2022:8800",
    "cpe" : "cpe:/o:redhat:rhel_e4s:8.2",
    "package" : "grub2-1:2.02-87.el8_2.11"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.4 Extended Update Support",
    "release_date" : "2023-01-09T00:00:00Z",
    "advisory" : "RHSA-2023:0047",
    "cpe" : "cpe:/o:redhat:rhel_eus:8.4",
    "package" : "grub2-1:2.02-99.el8_4.10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.6 Extended Update Support",
    "release_date" : "2023-01-09T00:00:00Z",
    "advisory" : "RHSA-2023:0048",
    "cpe" : "cpe:/o:redhat:rhel_eus:8.6",
    "package" : "grub2-1:2.02-123.el8_6.12"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2023-02-14T00:00:00Z",
    "advisory" : "RHSA-2023:0752",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9",
    "package" : "grub2-1:2.06-46.el9_1.3"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9.0 Extended Update Support",
    "release_date" : "2022-12-13T00:00:00Z",
    "advisory" : "RHSA-2022:8978",
    "cpe" : "cpe:/o:redhat:rhel_eus:9.0",
    "package" : "grub2-1:2.06-27.el9_0.12"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2022-2601\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-2601\nhttps://lists.gnu.org/archive/html/grub-devel/2022-11/msg00059.html" ],
  "name" : "CVE-2022-2601",
  "csaw" : false
}