CVE-2026-63956

USB: serial: cypress_m8: 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: 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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	3416eaa1f8f8d516b77de514e14cf8da256d28fb to before 4fcb22218f0a7229b7ce3b3952fb644def293fa5Affected 3416eaa1f8f8d516b77de514e14cf8da256d28fb to before ad3d1628a46134276546d7a12fedf04be9979158Affected 3416eaa1f8f8d516b77de514e14cf8da256d28fb to before 52e18ae0c47c5c89e18fcd8022f287f7cc8802ecAffected 3416eaa1f8f8d516b77de514e14cf8da256d28fb to before 4bcaa59f403dbde6328604a500d65ee8d40975d9Affected 3416eaa1f8f8d516b77de514e14cf8da256d28fb to before 1ef25704bd3b625fd151c09feee459479f71ee64Affected 3416eaa1f8f8d516b77de514e14cf8da256d28fb to before 284105c40fc31fff90cdab8a0377aaeb92f87f0eAffected 3416eaa1f8f8d516b77de514e14cf8da256d28fb to before 6c13f3bb652bc8665e709ba07122612586aea648Affected 3416eaa1f8f8d516b77de514e14cf8da256d28fb to before e1a9d791fd66ab2431b9e6f6f835823809869047Affected
LinuxLinux	2.6.26Affected before 2.6.26Not 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

3416eaa1f8f8d516b77de514e14cf8da256d28fb to before 4fcb22218f0a7229b7ce3b3952fb644def293fa5Affected
3416eaa1f8f8d516b77de514e14cf8da256d28fb to before ad3d1628a46134276546d7a12fedf04be9979158Affected
3416eaa1f8f8d516b77de514e14cf8da256d28fb to before 52e18ae0c47c5c89e18fcd8022f287f7cc8802ecAffected
3416eaa1f8f8d516b77de514e14cf8da256d28fb to before 4bcaa59f403dbde6328604a500d65ee8d40975d9Affected
3416eaa1f8f8d516b77de514e14cf8da256d28fb to before 1ef25704bd3b625fd151c09feee459479f71ee64Affected
3416eaa1f8f8d516b77de514e14cf8da256d28fb to before 284105c40fc31fff90cdab8a0377aaeb92f87f0eAffected
3416eaa1f8f8d516b77de514e14cf8da256d28fb to before 6c13f3bb652bc8665e709ba07122612586aea648Affected
3416eaa1f8f8d516b77de514e14cf8da256d28fb to before e1a9d791fd66ab2431b9e6f6f835823809869047Affected

LinuxLinux

2.6.26Affected
before 2.6.26Not 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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