Not yet scoredPublished Jul 19, 2026

CVE-2026-63956USB: serial: cypress_m8: fix memory corruption with small endpoint

Updated under an hour ago (Oct 28, 2026, 9:00 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: USB: serial: cypress_m8: fix memory corruption with small endpoint Make sure that the interrupt-out endpoint max packet size is at least eight bytes to avoid user-controlled slab corruption or NULL-pointer dereference should a malicious device report a smaller size.

CVSS: Not yet scored
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Awaiting Analysis
Record last updated: Jul 19, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	3416eaa1f8f8d516b77de514e14cf8da256d28fb builds before 4fcb22218f0a7229b7ce3b3952fb644def293fa5; from 3416eaa1f8f8d516b77de514e14cf8da256d28fb before ad3d1628a46134276546d7a12fedf04be9979158; 3416eaa1f8f8d516b77de514e14cf8da256d28fb builds before 52e18ae0c47c5c89e18fcd8022f287f7cc8802ec; 3416eaa1f8f8d516b77de514e14cf8da256d28fb builds before 4bcaa59f403dbde6328604a500d65ee8d40975d9; 3416eaa1f8f8d516b77de514e14cf8da256d28fb builds before 1ef25704bd3b625fd151c09feee459479f71ee64; from 3416eaa1f8f8d516b77de514e14cf8da256d28fb before 284105c40fc31fff90cdab8a0377aaeb92f87f0e; 3416eaa1f8f8d516b77de514e14cf8da256d28fb builds before 6c13f3bb652bc8665e709ba07122612586aea648; from 3416eaa1f8f8d516b77de514e14cf8da256d28fb before e1a9d791fd66ab2431b9e6f6f835823809869047	CNA record

References

References

https://git.kernel.org/stable/c/4fcb22218f0a7229b7ce3b3952fb644def293fa5
https://git.kernel.org/stable/c/ad3d1628a46134276546d7a12fedf04be9979158
https://git.kernel.org/stable/c/52e18ae0c47c5c89e18fcd8022f287f7cc8802ec
https://git.kernel.org/stable/c/4bcaa59f403dbde6328604a500d65ee8d40975d9
https://git.kernel.org/stable/c/1ef25704bd3b625fd151c09feee459479f71ee64
https://git.kernel.org/stable/c/284105c40fc31fff90cdab8a0377aaeb92f87f0e
https://git.kernel.org/stable/c/6c13f3bb652bc8665e709ba07122612586aea648
https://git.kernel.org/stable/c/e1a9d791fd66ab2431b9e6f6f835823809869047

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.