# CVE-2022-49553: linux: In the Linux kernel, the following vulnerability has been resolved:  fs/ntfs3: validate BOOT sectors_per_clusters  Wh...

CVE-2022-49553 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-49553, released February 26, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2022-49553
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0028
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Feb 26, 2025

## Description

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

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 5.18.2-1 | [DEBIAN-CVE-2022-49553](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49553.md) | Feb 26, 2025 |
| Linux | linux Debian 13.5 (trixie) | 5.18.2-1 | [DEBIAN-CVE-2022-49553](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49553.md) | Feb 26, 2025 |
| Linux | linux Debian 14 | 5.18.2-1 | [DEBIAN-CVE-2022-49553](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49553.md) | Feb 26, 2025 |

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Data as of 2026-11-09T01:18:40Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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