# CVE-2026-72210: linux: In the Linux kernel, the following vulnerability has been resolved:  ntfs: fix off-by-one in mapping pairs decoding b...

CVE-2026-72210 is fixed in linux on 1 platform by DEBIAN-CVE-2026-72210 (version 7.1.5-1), released August 15, 2026. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2026-72210
- Priority: Urgent
- CVSS: 9.8 (critical)
- EPSS: 0.0055
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 15, 2026

## Description

In the Linux kernel, the following vulnerability has been resolved:  ntfs: fix off-by-one in mapping pairs decoding bounds checks  In ntfs_mapping_pairs_decompress(), attr_end points one byte past the end of the attribute record:      attr_end = (u8 *)attr + le32_to_cpu(attr->length);  The two bounds checks validating that mapping pair data bytes fit within the attribute use strict greater-than (>), which allows a one-byte out-of-bounds read when the data extends exactly to attr_end:    b = *buf & 0xf;   if (b) {       if (unlikely(buf + b > attr_end))   // off-by-one           goto io_error;       for (deltaxcn = (s8)buf[b--]; b; b--)           deltaxcn = (deltaxcn << 8) + buf[b];   }  When buf + b == attr_end, the check evaluates to false and buf[b] reads one byte past the valid attribute boundary. The same pattern appears in the LCN delta bytes check.  Fix both checks to use >= so that buf[b] at exactly attr_end is correctly rejected as out of bounds.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 14 | 7.1.5-1 | [DEBIAN-CVE-2026-72210](https://patchblox.com/security/data/fix/linux/debian-cve-2026-72210.md) | Aug 15, 2026 |

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Data as of 2026-11-09T07:25:28Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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