CVE-2026-63899

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

State: Published
Severity: Not scored
Published: Jul 19, 2026
Updated: Jul 19, 2026
Reserved: Jul 19, 2026

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	ee467a1f2066d2bfa293f7c2c7f1ff7000b0a39e to before 086b858b5f5125bc9d967ea2bd825f83d9f8f29dAffected ee467a1f2066d2bfa293f7c2c7f1ff7000b0a39e to before 2f3661eb2446e1ef593da45e01a3b21a906768ecAffected ee467a1f2066d2bfa293f7c2c7f1ff7000b0a39e to before ccbec56f2f9af008f1574335cc6a668f16603e47Affected ee467a1f2066d2bfa293f7c2c7f1ff7000b0a39e to before be3a1ed4ae51fa8dde57383277d336ce834f2cd9Affected ee467a1f2066d2bfa293f7c2c7f1ff7000b0a39e to before e906545641d34fb1a09a65b4b5cfdff40eb09681Affected ee467a1f2066d2bfa293f7c2c7f1ff7000b0a39e to before 6c0cf56f00f280d72180bb6ce79741bc787a6269Affected ee467a1f2066d2bfa293f7c2c7f1ff7000b0a39e to before b40166b4ef96067620a0f248e74ad9658c8f680cAffected ee467a1f2066d2bfa293f7c2c7f1ff7000b0a39e to before 4085f0dbb1ce2251c9a5938d693de6593f0ab2bdAffected
LinuxLinux	3.14Affected before 3.14Not affected 5.10.259 through 5.10.Not affected 5.15.210 through 5.15.Not affected 6.1.176 through 6.1.Not affected 6.6.143 through 6.6.Not affected 6.12.93 through 6.12.Not affected 6.18.35 through 6.18.Not affected 7.0.12 through 7.0.*Not affected 7.1 and laterNot affected

Product

Versions

LinuxLinux

ee467a1f2066d2bfa293f7c2c7f1ff7000b0a39e to before 086b858b5f5125bc9d967ea2bd825f83d9f8f29dAffected
ee467a1f2066d2bfa293f7c2c7f1ff7000b0a39e to before 2f3661eb2446e1ef593da45e01a3b21a906768ecAffected
ee467a1f2066d2bfa293f7c2c7f1ff7000b0a39e to before ccbec56f2f9af008f1574335cc6a668f16603e47Affected
ee467a1f2066d2bfa293f7c2c7f1ff7000b0a39e to before be3a1ed4ae51fa8dde57383277d336ce834f2cd9Affected
ee467a1f2066d2bfa293f7c2c7f1ff7000b0a39e to before e906545641d34fb1a09a65b4b5cfdff40eb09681Affected
ee467a1f2066d2bfa293f7c2c7f1ff7000b0a39e to before 6c0cf56f00f280d72180bb6ce79741bc787a6269Affected
ee467a1f2066d2bfa293f7c2c7f1ff7000b0a39e to before b40166b4ef96067620a0f248e74ad9658c8f680cAffected
ee467a1f2066d2bfa293f7c2c7f1ff7000b0a39e to before 4085f0dbb1ce2251c9a5938d693de6593f0ab2bdAffected

LinuxLinux

3.14Affected
before 3.14Not affected
5.10.259 through 5.10.*Not affected
5.15.210 through 5.15.*Not affected
6.1.176 through 6.1.*Not affected
6.6.143 through 6.6.*Not affected
6.12.93 through 6.12.*Not affected
6.18.35 through 6.18.*Not affected
7.0.12 through 7.0.*Not affected
7.1 and laterNot affected

References

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