CVE-2022-49553: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.3% chance of exploitation in the next 30 days.

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 products

• Linux Linux Kernel: from 5.15, before 5.15.45 (fixed in 5.15.45); from 5.16, before 5.17.13 (fixed in 5.17.13); from 5.18, before 5.18.2 (fixed in 5.18.2)

Published 2025-02-26. Last modified 2026-08-04.