CVE-2024-45779
Grub2: fs/bfs: integer overflow leads to heap oob read in the bfs parser
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
An integer overflow flaw was found in the BFS file system driver in grub2. When reading a file with an indirect extent map, grub2 fails to validate the number of extent entries to be read. A crafted or corrupted BFS filesystem may cause an integer overflow during the file reading, leading to a heap of bounds read. As a consequence, sensitive data may be leaked, or grub2 will crash.
This update for grub2 fixes the following issues. Fixed strcpy overflow in ufs. Fixed a heap-based buffer overflow in hfs. Fixed strcpy overflow in hfs. Fixed an overflow in tar/cpio. Fixed a refcount overflow in hfsplus. Fixed a heap overflow in JPEG parser. Fixed a missing NULL check in extcmd parser. Fixed an overflow in .MO file handling. Fixed an integer overflow in gettext. Fixed bfs filesystem by removing it from lockdown capable modules. Fixed a heap overflow in bfs. Fixed an issue that can bypass TPM-bound disk encryption on SLM encrypted Images. Fixed an out-of-bounds write during the network boot process. Fixed a use-after-free when handling hooks during module unload in command/gpg. Fixed an integer overflow that may lead to an out-of-bounds write through the read command. Fixed an issue where the dump command was not being blocked when grub was in lockdown mode. Fixed an integer overflow that may lead to an out-of-bounds write when handling symlinks in ufs. Fixed an integer overflow that may lead to an out-of-bounds write when handling symlinks in reiserfs. Fixed an integer overflow that may lead to an out-of-bounds write when handling symlinks in jfs. Fixed an integer overflow that may lead to an out-of-bounds write when handling symlinks in romfs. Fixed a heap-based buffer overflow in udf that may lead to arbitrary code execution. Fixed an integer overflow that may lead to an out-of-bounds write in hfs. Fixed an integer overflow that may lead to an out-of-bounds write in squash4.
CVSS Scores
SSVC
- Decision:Track
Timeline
- 2024-09-08 CVE Reserved
- 2025-02-19 CVE Published
- 2025-07-03 EPSS Updated
- 2025-07-05 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-125: Out-of-bounds Read
- CWE-190: Integer Overflow or Wraparound
CAPEC
References (3)
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Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
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Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Gnu Search vendor "Gnu" | Grub2 Search vendor "Gnu" for product "Grub2" | * | - |
Affected
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Red Hat Search vendor "Red Hat" | Enterprise Linux Search vendor "Red Hat" for product "Enterprise Linux" | * | - |
Affected
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Redhat Search vendor "Redhat" | Openshift Search vendor "Redhat" for product "Openshift" | * | - |
Affected
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Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | * | - |
Affected
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Opensuse Search vendor "Opensuse" | Leap Search vendor "Opensuse" for product "Leap" | * | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | * | - |
Affected
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Redhat Search vendor "Redhat" | Openshift Search vendor "Redhat" for product "Openshift" | * | - |
Affected
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Suse Search vendor "Suse" | Sle-module-basesystem Search vendor "Suse" for product "Sle-module-basesystem" | * | - |
Affected
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Suse Search vendor "Suse" | Sle-module-server-applications Search vendor "Suse" for product "Sle-module-server-applications" | * | - |
Affected
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Suse Search vendor "Suse" | Sle-module-suse-manager-proxy Search vendor "Suse" for product "Sle-module-suse-manager-proxy" | * | - |
Affected
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Suse Search vendor "Suse" | Sle-module-suse-manager-server Search vendor "Suse" for product "Sle-module-suse-manager-server" | * | - |
Affected
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Suse Search vendor "Suse" | Sle Hpc-espos Search vendor "Suse" for product "Sle Hpc-espos" | * | - |
Affected
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Suse Search vendor "Suse" | Sle Hpc-ltss Search vendor "Suse" for product "Sle Hpc-ltss" | * | - |
Affected
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Suse Search vendor "Suse" | Sles-ltss-extended-security Search vendor "Suse" for product "Sles-ltss-extended-security" | * | - |
Affected
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Suse Search vendor "Suse" | Sles-ltss Search vendor "Suse" for product "Sles-ltss" | * | - |
Affected
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Suse Search vendor "Suse" | Sles Sap Search vendor "Suse" for product "Sles Sap" | * | - |
Affected
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Suse Search vendor "Suse" | Suse-manager-proxy Search vendor "Suse" for product "Suse-manager-proxy" | * | - |
Affected
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Suse Search vendor "Suse" | Suse-manager-server Search vendor "Suse" for product "Suse-manager-server" | * | - |
Affected
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