CVE-2026-63956
HIGH severity · CVSS 7.8 · Out-of-bounds write
7.8CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/1ef25704bd3b625fd151c09feee459479f71ee64 ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/1ef25704bd3b625fd151c09feee459479f71ee64Patch
- https://git.kernel.org/stable/c/284105c40fc31fff90cdab8a0377aaeb92f87f0ePatch
- https://git.kernel.org/stable/c/4bcaa59f403dbde6328604a500d65ee8d40975d9Patch
- https://git.kernel.org/stable/c/4fcb22218f0a7229b7ce3b3952fb644def293fa5Patch
- https://git.kernel.org/stable/c/52e18ae0c47c5c89e18fcd8022f287f7cc8802ecPatch
- https://git.kernel.org/stable/c/6c13f3bb652bc8665e709ba07122612586aea648Patch
- https://git.kernel.org/stable/c/ad3d1628a46134276546d7a12fedf04be9979158Patch
- https://git.kernel.org/stable/c/e1a9d791fd66ab2431b9e6f6f835823809869047Patch