Bug 2348211 (CVE-2022-49553)

Summary: CVE-2022-49553 kernel: fs/ntfs3: validate BOOT sectors_per_clusters
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Description OSIDB Bzimport 2025-02-26 03:21:30 UTC 
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
Comment 1 Avinash Hanwate 2025-02-26 13:02:14 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022616-CVE-2022-49553-4466@gregkh/T
Comment 2 Avinash Hanwate 2025-02-26 17:24:37 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022616-CVE-2022-49553-4466@gregkh/T