CVE-2026-23236

fbdev: smscufx: properly copy ioctl memory to kernelspace

State: Published
Severity: 7.3 High
Published: Mar 4, 2026
Updated: Aug 5, 2026
Reserved: Jan 13, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

fbdev: smscufx: properly copy ioctl memory to kernelspace

The UFX_IOCTL_REPORT_DAMAGE ioctl does not properly copy data from userspace to kernelspace, and instead directly references the memory, which can cause problems if invalid data is passed from userspace. Fix this all up by correctly copying the memory before accessing it within the kernel.

Scores

CVSS	Score	Vector	Source
3.1	7.3 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	3c8a63e22a0802fd56380f6ab305b419f18eb6f5 to before 061cfeb560aa3ddc174153dbe5be9d0b55eb7248Affected 3c8a63e22a0802fd56380f6ab305b419f18eb6f5 to before 6167af934f956d3ae1e06d61f45cd0d1004bbe1aAffected 3c8a63e22a0802fd56380f6ab305b419f18eb6f5 to before a0321e6e58facb39fe191caa0e52ed9aab6a48feAffected 3c8a63e22a0802fd56380f6ab305b419f18eb6f5 to before 0634e8d650993602fc5b389ff7ac525f6542e141Affected 3c8a63e22a0802fd56380f6ab305b419f18eb6f5 to before 52917e265aa5f848212f60fc50fc504d8ef12866Affected 3c8a63e22a0802fd56380f6ab305b419f18eb6f5 to before 1c008ad0f0d1c1523902b9cdb08e404129677bfcAffected 3c8a63e22a0802fd56380f6ab305b419f18eb6f5 to before f1e91bd4efeae48b0f42caed7e8ce2e3a0d05b02Affected 3c8a63e22a0802fd56380f6ab305b419f18eb6f5 to before 120adae7b42faa641179270c067864544a50ab69Affected
LinuxLinux	3.2Affected before 3.2Not affected 5.10.251 through 5.10.Not affected 5.15.201 through 5.15.Not affected 6.1.164 through 6.1.Not affected 6.6.127 through 6.6.Not affected 6.12.74 through 6.12.Not affected 6.18.13 through 6.18.Not affected 6.19.3 through 6.19.*Not affected 7.0 and laterNot affected

Product

Versions

LinuxLinux

3c8a63e22a0802fd56380f6ab305b419f18eb6f5 to before 061cfeb560aa3ddc174153dbe5be9d0b55eb7248Affected
3c8a63e22a0802fd56380f6ab305b419f18eb6f5 to before 6167af934f956d3ae1e06d61f45cd0d1004bbe1aAffected
3c8a63e22a0802fd56380f6ab305b419f18eb6f5 to before a0321e6e58facb39fe191caa0e52ed9aab6a48feAffected
3c8a63e22a0802fd56380f6ab305b419f18eb6f5 to before 0634e8d650993602fc5b389ff7ac525f6542e141Affected
3c8a63e22a0802fd56380f6ab305b419f18eb6f5 to before 52917e265aa5f848212f60fc50fc504d8ef12866Affected
3c8a63e22a0802fd56380f6ab305b419f18eb6f5 to before 1c008ad0f0d1c1523902b9cdb08e404129677bfcAffected
3c8a63e22a0802fd56380f6ab305b419f18eb6f5 to before f1e91bd4efeae48b0f42caed7e8ce2e3a0d05b02Affected
3c8a63e22a0802fd56380f6ab305b419f18eb6f5 to before 120adae7b42faa641179270c067864544a50ab69Affected

LinuxLinux

3.2Affected
before 3.2Not affected
5.10.251 through 5.10.*Not affected
5.15.201 through 5.15.*Not affected
6.1.164 through 6.1.*Not affected
6.6.127 through 6.6.*Not affected
6.12.74 through 6.12.*Not affected
6.18.13 through 6.18.*Not affected
6.19.3 through 6.19.*Not affected
7.0 and laterNot affected

References

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