CVE-2025-0624 — Out-of-bounds Write in Debian Grub2

Vendor	Product	Version range	Fixed in
debian	grub2	< grub2 2.12-6 (forky)	grub2 2.12-6 (forky)
gnu	grub2	>= 0 < 2.12-6	2.12-6
gnu	grub2	>= 0 < 2.12-6	2.12-6
msrc	azl3_grub2_2.06-24_on_azure_linux_3.0	—	—
msrc	cbl2_grub2_2.06-14_on_cbl_mariner_2.0	—	—
msrc	cm2_grub2_2.06-14_on_cbl_mariner_2.0	—	—

OSV

CVE-2025-0624: A flaw was found in grub2

osv·2025-02-19·CVSS 7.6

CVE-2025-0624 [HIGH] CVE-2025-0624: A flaw was found in grub2 A flaw was found in grub2. During the network boot process, when trying to search for the configuration file, grub copies data from a user controlled environment variable into an internal buffer using the grub_strcpy() function. During this step, it fails to consider the environment variable length when allocating the internal buffer, resulting in an out-of-bounds write. If correctly exploited, this issue may result in remote code execution through the same network segment grub is searching for the boot information, which can be used to by-pass secure boot protections.

GHSA

GHSA-q3rr-g46f-jgqr: A flaw was found in grub2

ghsa_unreviewed·2025-02-19

CVE-2025-0624 [HIGH] CWE-787 GHSA-q3rr-g46f-jgqr: A flaw was found in grub2 A flaw was found in grub2. During the network boot process, when trying to search for the configuration file, grub copies data from a user controlled environment variable into an internal buffer using the grub_strcpy() function. During this step, it fails to consider the environment variable length when allocating the internal buffer, resulting in an out-of-bounds write. If correctly exploited, this issue may result in remote code execution through the same network segment grub is searching for the boot information, which can be used to by-pass secure boot protections.

Oracle

Oracle Oracle Communications Risk Matrix: Platform (grub2) — CVE-2025-0624

vendor_oracle·2025-07-15·CVSS 7.6

CVE-2025-0624 [HIGH] Oracle Oracle Communications Risk Matrix: Platform (grub2) — CVE-2025-0624 Oracle Oracle Communications Risk Matrix: Platform (grub2) vulnerability CVE: CVE-2025-0624 CVSS: 7.6 Protocol: SFTP Remote exploit: No Affected versions: Adjacent Network Advisory: cpujul2025 (JUL 2025)

Red Hat

grub2: net: Out-of-bounds write in grub_net_search_config_file()

vendor_redhat·2025-02-18·CVSS 7.6

CVE-2025-0624 [HIGH] CWE-787 grub2: net: Out-of-bounds write in grub_net_search_config_file() grub2: net: Out-of-bounds write in grub_net_search_config_file() A flaw was found in grub2. During the network boot process, when trying to search for the configuration file, grub copies data from a user controlled environment variable into an internal buffer using the grub_strcpy() function. During this step, it fails to consider the environment variable length when allocating the internal buffer, resulting in an out-of-bounds write. If correctly exploited, this issue may result in remote code execution through the same network segment grub is searching for the boot information, which can be used to by-pass secure boot protections. A flaw was found in grub2. During the network boot process, when trying to search for the configuration file, grub copies data from a user controlled environ

Microsoft

Grub2: net: out-of-bounds write in grub_net_search_config_file()

vendor_msrc·2025-02-11·CVSS 7.6

CVE-2025-0624 [HIGH] CWE-787 Grub2: net: out-of-bounds write in grub_net_search_config_file() Grub2: net: out-of-bounds write in grub_net_search_config_file() FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability? One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this. Mariner: Mariner redhat: redhat Customer Action Required: Yes Remediation: CBL-Mariner Releases Reference: ht

Debian

CVE-2025-0624: grub2 - A flaw was found in grub2. During the network boot process, when trying to searc...

vendor_debian·2025·CVSS 7.6

CVE-2025-0624 [HIGH] CVE-2025-0624: grub2 - A flaw was found in grub2. During the network boot process, when trying to searc... A flaw was found in grub2. During the network boot process, when trying to search for the configuration file, grub copies data from a user controlled environment variable into an internal buffer using the grub_strcpy() function. During this step, it fails to consider the environment variable length when allocating the internal buffer, resulting in an out-of-bounds write. If correctly exploited, this issue may result in remote code execution through the same network segment grub is searching for the boot information, which can be used to by-pass secure boot protections. Scope: local bookworm: open bullseye: open forky: resolved (fixed in 2.12-6) sid: resolved (fixed in 2.12-6) trixie: resolved (fixed in 2.12-6)

CVE-2025-0624: A flaw was found in grub2. During the network boot process, when trying to search for the configuration file, grub copies data from a user controlled…

Affected

CVSS provenance