CVE-2024-38624: fs/ntfs3: Use 64 bit variable to avoid 32 bit overflow
In the Linux kernel, the following vulnerability has been resolved:
fs/ntfs3: Use 64 bit variable to avoid 32 bit overflow
For example, in the expression:
vbo = 2 * vbo + skip
Security readout for executives and security teams
Plain-English summary
This is a Linux kernel ntfs3 filesystem bug caused by a 32-bit arithmetic overflow. The public record does not provide a CVSS score, impact statement, or exploitation evidence. Treat it as a kernel maintenance issue that matters most on systems using the ntfs3 NTFS filesystem driver.
Executive priority
Schedule remediation through normal kernel patch management unless ntfs3 is used with untrusted media or images. Escalate priority for workstations, forensic systems, or file-processing hosts that regularly mount NTFS volumes.
Technical view
The flaw is in fs/ntfs3. The resolved change uses a 64-bit variable to avoid overflow in arithmetic such as vbo = 2 * vbo + skip. The source bundle lists Linux kernel versions and stable commit references but does not describe crash, privilege, confidentiality, or integrity impact.
Likely exposure
Exposure is likely limited to Linux systems running affected kernels where the ntfs3 filesystem code can be reached, especially systems mounting NTFS filesystems. The bundle does not identify distributions, appliances, or cloud images, so asset owners must map kernel versions against vendor advisories.
Exploitation context
The source bundle marks KEV as false and provides no cited evidence of active exploitation, public exploit code, or weaponized activity. It also lacks preconditions and impact details, so exploitation likelihood cannot be responsibly rated from these sources alone.
Researcher notes
Evidence is sparse: the record names a 32-bit overflow fix in ntfs3 and references stable commits, but omits CVSS, CWE, impact, and exploitability details. Analysis should focus on code review of the referenced commits and vendor backport status.
Mitigation direction
Update to vendor-supported Linux kernels containing the referenced stable ntfs3 fixes.
Check Linux distribution advisories for backported fixes and exact package versions.
If ntfs3 is unnecessary, avoid mounting NTFS filesystems until patched.
Prioritize systems that accept removable media or untrusted filesystem images.
Validation and detection
Inventory Linux kernel versions across servers, endpoints, and appliances.
Identify systems using or allowing the ntfs3 filesystem driver.
Compare deployed kernels with vendor advisories for CVE-2024-38624.
Confirm patched kernels include the referenced stable commits or distro backports.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Potential ATT&CK relevance
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CVE-2024-38624 mapping review
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