Input: atmel_mxt_ts - fix boundary check in mxt_prepare_cfg_mem
Summary
| CVE | CVE-2026-63908 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-07-19 16:17:08 UTC |
| Updated | 2026-07-19 16:17:08 UTC |
| Description | In the Linux kernel, the following vulnerability has been resolved: Input: atmel_mxt_ts - fix boundary check in mxt_prepare_cfg_mem When a configuration file provides an object size that is larger than the driver's known mxt_obj_size(object), the driver intends to discard the extra bytes. The loop iterates using for (i = 0; i < size; i++). Inside the loop, the condition to skip processing extra bytes is: if (i > mxt_obj_size(object)) continue; Since i is a 0-based index, the valid indices for the object are 0 through mxt_obj_size(object) - 1. When i == mxt_obj_size(object), the condition evaluates to false, and the code processes the byte instead of discarding it. This causes the code to calculate byte_offset = reg + i - cfg->start_ofs and writes the byte there, overwriting exactly one byte of the adjacent instance or object. Update the boundary check to skip extra bytes correctly by using >=. |
Risk And Classification
EPSS: 0.002100000 probability, percentile 0.113660000 (date 2026-07-20)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 50a77c658b80e7e3303e3bcec195b30e2b62d513 862a1a32b5190241fce7a7d20229539a3926f31e git | Not specified |
| CNA | Linux | Linux | affected 50a77c658b80e7e3303e3bcec195b30e2b62d513 5c3681c3abc35cfac6b702251382312c60d96bc2 git | Not specified |
| CNA | Linux | Linux | affected 50a77c658b80e7e3303e3bcec195b30e2b62d513 1017e1c6c6c49cccbcda9bbcfa49e50b0b6dad39 git | Not specified |
| CNA | Linux | Linux | affected 50a77c658b80e7e3303e3bcec195b30e2b62d513 e9b62996ba537774f68fecfd7eecb5aec1713952 git | Not specified |
| CNA | Linux | Linux | affected 50a77c658b80e7e3303e3bcec195b30e2b62d513 ae92e334544263a02d9f99e18385e718c44392c9 git | Not specified |
| CNA | Linux | Linux | affected 50a77c658b80e7e3303e3bcec195b30e2b62d513 7f95f4792c0dc767fcb8e405391e779ab419d55a git | Not specified |
| CNA | Linux | Linux | affected 50a77c658b80e7e3303e3bcec195b30e2b62d513 6c6b989b4ebf22b086fdfcac2163b5cb55e34d8f git | Not specified |
| CNA | Linux | Linux | affected 50a77c658b80e7e3303e3bcec195b30e2b62d513 baa0210fb6a9dc3882509a9411b6d284d88fe30e git | Not specified |
| CNA | Linux | Linux | affected 3.17 | Not specified |
| CNA | Linux | Linux | unaffected 3.17 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.10.259 5.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.210 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.176 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.143 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.93 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.35 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.0.12 7.0.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/baa0210fb6a9dc3882509a9411b6d284d88fe30e | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/5c3681c3abc35cfac6b702251382312c60d96bc2 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/7f95f4792c0dc767fcb8e405391e779ab419d55a | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/e9b62996ba537774f68fecfd7eecb5aec1713952 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/ae92e334544263a02d9f99e18385e718c44392c9 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/862a1a32b5190241fce7a7d20229539a3926f31e | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/6c6b989b4ebf22b086fdfcac2163b5cb55e34d8f | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/1017e1c6c6c49cccbcda9bbcfa49e50b0b6dad39 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.