CVE-2026-46072
MediumCVSS 5.5Exploitation Probability (EPSS)
Low risk7th percentile - higher than 7% of all known CVEs
Summary
A vulnerability has been identified in the Linux kernel within the run_unpack() function, which does not validate buffer boundaries before reading data. As a result, a crafted NTFS image can lead to out-of-bounds memory reads, potentially allowing unauthorized access to memory.
Risk Assessment
Organizations may be exposed to attacks that exploit this vulnerability to read sensitive data from memory, potentially leading to security breaches.
Recommendation
It is recommended to update the Linux kernel to the latest version, which includes proper buffer boundary checks in the run_unpack() function.
Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: ntfs3: add buffer boundary checks to run_unpack() run_unpack() checks `run_buf < run_last` at the top of the while loop but then reads size_size and offset_size bytes via run_unpack_s64() without verifying they fit within the remaining buffer. A crafted NTFS image with truncated run data in an MFT attribute triggers an OOB heap read of up to 15 bytes when the filesystem is mounted. Add boundary checks before each run_unpack_s64() call to ensure the declared field size does not exceed the remaining buffer. Found by fuzzing with a source-patched harness (LibAFL + QEMU).