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{"acknowledgement": "Red Hat would like to thank Zhang Boyang for reporting this issue.", "affected_release": [{"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 7", "release_date": "2024-04-23T00:00:00Z"}, {"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", "release_date": "2023-01-09T00:00:00Z"}, {"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 8.1 Update Services for SAP Solutions", "release_date": "2022-11-16T00:00:00Z"}, {"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 Advanced Update Support", "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 Telecommunications Update Service", "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 8.2 Update Services for SAP Solutions", "release_date": "2022-12-06T00:00:00Z"}, {"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 8.4 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 8.6 Extended Update Support", "release_date": "2023-01-09T00:00:00Z"}, {"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", "release_date": "2023-02-14T00:00:00Z"}, {"advisory": "RHSA-2022:8978", "cpe": "cpe:/o:redhat:rhel_eus:9.0", "package": "grub2-1:2.06-27.el9_0.12", "product_name": "Red Hat Enterprise Linux 9.0 Extended Update Support", "release_date": "2022-12-13T00:00:00Z"}], "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"}, "csaw": false, "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."], "name": "CVE-2022-2601", "public_date": "2022-11-15T10:00:00Z", "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"], "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.", "threat_severity": "Moderate"}