CVE-2022-49553

Summary

In the Linux kernel, the following vulnerability has been resolved:

fs/ntfs3: validate BOOT sectors_per_clusters

When the NTFS BOOT sectors_per_clusters field is > 0x80, it represents a shift value. Make sure that the shift value is not too large before using it (NTFS max cluster size is 2MB). Return -EVINVAL if it too large.

This prevents negative shift values and shift values that are larger than the field size.

Prevents this UBSAN error:

UBSAN: shift-out-of-bounds in ../fs/ntfs3/super.c:673:16 shift exponent -192 is negative

Affected Software

VendorProductVersion RangeStatus
LinuxLinux82cae269cfa953032fbb8980a7d554d60fb00b17 < 58cf68a1886d14ffdc5c892ce483a82156769e88affected
LinuxLinux82cae269cfa953032fbb8980a7d554d60fb00b17 < 4746c49b11b2403f5b5b07c6eac9e60663dcd9a3affected
LinuxLinux82cae269cfa953032fbb8980a7d554d60fb00b17 < a2b6986316a2d106f6951e76db70fa4b2fde64a9affected
LinuxLinux82cae269cfa953032fbb8980a7d554d60fb00b17 < a3b774342fa752a5290c0de36375289dfcf4a260affected
LinuxLinux5.15affected
LinuxLinux0 < 5.15unaffected
LinuxLinux5.15.45 <= 5.15.*unaffected
LinuxLinux5.17.13 <= 5.17.*unaffected
LinuxLinux5.18.2 <= 5.18.*unaffected
LinuxLinux5.19 <= *unaffected

Weaknesses

References