CVE-2026-46072

Summary

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).

Affected Software

VendorProductVersion RangeStatus
LinuxLinux82cae269cfa953032fbb8980a7d554d60fb00b17 < bbad75336870b51b81979b97613746237fcb02feaffected
LinuxLinux82cae269cfa953032fbb8980a7d554d60fb00b17 < 425de2aba0d061b3e715d51a3b1992c112ed5b99affected
LinuxLinux82cae269cfa953032fbb8980a7d554d60fb00b17 < bf7ac4a1d3bfc6e56e54635c3d331a68170d37c9affected
LinuxLinux82cae269cfa953032fbb8980a7d554d60fb00b17 < e64f7dfcaff79e7dfff9121a382dd77f9b462f62affected
LinuxLinux82cae269cfa953032fbb8980a7d554d60fb00b17 < d3012690a7065d9ca86521a525ad11e8af491d45affected
LinuxLinux82cae269cfa953032fbb8980a7d554d60fb00b17 < 41aadf5cb482793a24e05aa136224e179a778586affected
LinuxLinux82cae269cfa953032fbb8980a7d554d60fb00b17 < b62567bca47408e6739dee75f02a2113548af875affected
LinuxLinux5.15affected
LinuxLinux0 < 5.15unaffected
LinuxLinux5.15.209 <= 5.15.*unaffected
LinuxLinux6.1.175 <= 6.1.*unaffected
LinuxLinux6.6.140 <= 6.6.*unaffected
LinuxLinux6.12.86 <= 6.12.*unaffected
LinuxLinux6.18.27 <= 6.18.*unaffected
LinuxLinux7.0.4 <= 7.0.*unaffected
LinuxLinux7.1 <= *unaffected

Weaknesses

References