Unrated severityNVD Advisory· Published Jul 19, 2026· Updated Jul 27, 2026
CVE-2026-63899
CVE-2026-63899
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.
Affected products
15- osv-coords14 versionspkg:linux/kernelpkg:rpm/opensuse/dtb-aarch64&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-64kb&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-azure&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-default&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-default-base&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-docs&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-kvmsmall&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-obs-build&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-obs-qa&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-rt&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-syms&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-zfcpdump&distro=openSUSE%20Leap%2016.0
>= 3.14.0, < 5.10.259+ 13 more
- (no CPE)range: >= 3.14.0, < 5.10.259
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1.160000.2.19
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
Patches
Vulnerability mechanics
References
8- git.kernel.org/stable/c/086b858b5f5125bc9d967ea2bd825f83d9f8f29dnvd
- git.kernel.org/stable/c/2f3661eb2446e1ef593da45e01a3b21a906768ecnvd
- git.kernel.org/stable/c/4085f0dbb1ce2251c9a5938d693de6593f0ab2bdnvd
- git.kernel.org/stable/c/6c0cf56f00f280d72180bb6ce79741bc787a6269nvd
- git.kernel.org/stable/c/b40166b4ef96067620a0f248e74ad9658c8f680cnvd
- git.kernel.org/stable/c/be3a1ed4ae51fa8dde57383277d336ce834f2cd9nvd
- git.kernel.org/stable/c/ccbec56f2f9af008f1574335cc6a668f16603e47nvd
- git.kernel.org/stable/c/e906545641d34fb1a09a65b4b5cfdff40eb09681nvd
News mentions
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