In the Linux kernel, the following vulnerability has been resolved:

USB: serial: mxuport: fix memory corruption with small endpoint

Make sure that the bulk-out endpoint max packet size is at least eight
bytes to avoid user-controlled slab corruption should a malicious device
report a smaller size.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
ee467a1f2066d2bfa293f7c2c7f1ff7000b0a39e affected < 086b858b5f5125bc9d967ea2bd825f83d9f8f29d
ee467a1f2066d2bfa293f7c2c7f1ff7000b0a39e affected < 2f3661eb2446e1ef593da45e01a3b21a906768ec
ee467a1f2066d2bfa293f7c2c7f1ff7000b0a39e affected < ccbec56f2f9af008f1574335cc6a668f16603e47
ee467a1f2066d2bfa293f7c2c7f1ff7000b0a39e affected < be3a1ed4ae51fa8dde57383277d336ce834f2cd9
ee467a1f2066d2bfa293f7c2c7f1ff7000b0a39e affected < e906545641d34fb1a09a65b4b5cfdff40eb09681
ee467a1f2066d2bfa293f7c2c7f1ff7000b0a39e affected < 6c0cf56f00f280d72180bb6ce79741bc787a6269
ee467a1f2066d2bfa293f7c2c7f1ff7000b0a39e affected < b40166b4ef96067620a0f248e74ad9658c8f680c
ee467a1f2066d2bfa293f7c2c7f1ff7000b0a39e affected < 4085f0dbb1ce2251c9a5938d693de6593f0ab2bd
Linux Linux affected
Version Status Constraints
3.14 affected —
0 unaffected < 3.14
5.10.259 unaffected ≤ 5.10.*
5.15.210 unaffected ≤ 5.15.*
6.1.176 unaffected ≤ 6.1.*
6.6.143 unaffected ≤ 6.6.*
6.12.93 unaffected ≤ 6.12.*
6.18.35 unaffected ≤ 6.18.*
7.0.12 unaffected ≤ 7.0.*
7.1 unaffected ≤ *

No data.

No data.

No data.

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/086b858b5f5125bc9d967ea2bd825f83d9f8f29d cve-icon
https://git.kernel.org/stable/c/2f3661eb2446e1ef593da45e01a3b21a906768ec cve-icon
https://git.kernel.org/stable/c/4085f0dbb1ce2251c9a5938d693de6593f0ab2bd cve-icon
https://git.kernel.org/stable/c/6c0cf56f00f280d72180bb6ce79741bc787a6269 cve-icon
https://git.kernel.org/stable/c/b40166b4ef96067620a0f248e74ad9658c8f680c cve-icon
https://git.kernel.org/stable/c/be3a1ed4ae51fa8dde57383277d336ce834f2cd9 cve-icon
https://git.kernel.org/stable/c/ccbec56f2f9af008f1574335cc6a668f16603e47 cve-icon
https://git.kernel.org/stable/c/e906545641d34fb1a09a65b4b5cfdff40eb09681 cve-icon
History

Sun, 19 Jul 2026 15:30:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: USB: serial: mxuport: fix memory corruption with small endpoint Make sure that the bulk-out endpoint max packet size is at least eight bytes to avoid user-controlled slab corruption should a malicious device report a smaller size.
Title USB: serial: mxuport: fix memory corruption with small endpoint
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-07-19T14:55:08.116Z

Reserved: 2026-07-19T07:54:57.019Z

Link: CVE-2026-63899

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses

No weakness.