CVE-2026-89730

fpga: altera-cvp: Avoid out-of-bounds read in trailing byte write

State: Published
Severity: Not scored
Published: Sep 11, 2026
Updated: Oct 19, 2026
Reserved: Sep 11, 2026

Description

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

fpga: altera-cvp: Avoid out-of-bounds read in trailing byte write

The trailing byte path in altera_cvp_send_block() dereferences a u32 pointer even when only 1-3 bytes remain in the input buffer. If the buffer ends at a page or scatterlist boundary, this can read past the valid image data and fault.

Copy the remaining bytes into a zero-initialized u32 before writing the final word so only valid bytes are read from the input buffer.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	34d1dc17ce978ae76e676d401b48fe9d004aa948 to before 447b3c893987a0106a65f04b62ec3271892e9d98Affected 34d1dc17ce978ae76e676d401b48fe9d004aa948 to before 3b8938f5fbcf4a918785f9cb4b108782eb4ea717Affected 34d1dc17ce978ae76e676d401b48fe9d004aa948 to before 2564ac3d3b8b47cd9692a5bf42d668ed7218b54eAffected 34d1dc17ce978ae76e676d401b48fe9d004aa948 to before 8f3365ed2a5db2ac95ab70a6c47561db39d24537Affected 34d1dc17ce978ae76e676d401b48fe9d004aa948 to before b138bc665e21d4422382ab43aebdf0a2b7bb9cb3Affected 34d1dc17ce978ae76e676d401b48fe9d004aa948 to before 827ec385458adeeda651de2b6f3537e386b1a8d9Affected 34d1dc17ce978ae76e676d401b48fe9d004aa948 to before 4dc1051939e499c838229af035464a5fc7671198Affected 34d1dc17ce978ae76e676d401b48fe9d004aa948 to before 9da70a43b5fea60d758137f7f0ccfe19356cb5bbAffected
LinuxLinux	4.14Affected before 4.14Not affected 5.10.270 through 5.10.Not affected 5.15.221 through 5.15.Not affected 6.1.188 through 6.1.Not affected 6.6.157 through 6.6.Not affected 6.12.109 through 6.12.Not affected 6.18.50 through 6.18.Not affected 7.2.4 through 7.2.*Not affected 7.3 and laterNot affected

Product

Versions

LinuxLinux

34d1dc17ce978ae76e676d401b48fe9d004aa948 to before 447b3c893987a0106a65f04b62ec3271892e9d98Affected
34d1dc17ce978ae76e676d401b48fe9d004aa948 to before 3b8938f5fbcf4a918785f9cb4b108782eb4ea717Affected
34d1dc17ce978ae76e676d401b48fe9d004aa948 to before 2564ac3d3b8b47cd9692a5bf42d668ed7218b54eAffected
34d1dc17ce978ae76e676d401b48fe9d004aa948 to before 8f3365ed2a5db2ac95ab70a6c47561db39d24537Affected
34d1dc17ce978ae76e676d401b48fe9d004aa948 to before b138bc665e21d4422382ab43aebdf0a2b7bb9cb3Affected
34d1dc17ce978ae76e676d401b48fe9d004aa948 to before 827ec385458adeeda651de2b6f3537e386b1a8d9Affected
34d1dc17ce978ae76e676d401b48fe9d004aa948 to before 4dc1051939e499c838229af035464a5fc7671198Affected
34d1dc17ce978ae76e676d401b48fe9d004aa948 to before 9da70a43b5fea60d758137f7f0ccfe19356cb5bbAffected

LinuxLinux

4.14Affected
before 4.14Not affected
5.10.270 through 5.10.*Not affected
5.15.221 through 5.15.*Not affected
6.1.188 through 6.1.*Not affected
6.6.157 through 6.6.*Not affected
6.12.109 through 6.12.*Not affected
6.18.50 through 6.18.*Not affected
7.2.4 through 7.2.*Not affected
7.3 and laterNot affected

References

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