CVE-2026-89730: fpga: altera-cvp: Avoid out-of-bounds read in trailing byte write

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

34d1dc17ce978ae76e676d401b48fe9d004aa948 to < 447b3c893987a0106a65f04b62ec3271892e9d98affected
34d1dc17ce978ae76e676d401b48fe9d004aa948 to < 3b8938f5fbcf4a918785f9cb4b108782eb4ea717affected
34d1dc17ce978ae76e676d401b48fe9d004aa948 to < 2564ac3d3b8b47cd9692a5bf42d668ed7218b54eaffected
34d1dc17ce978ae76e676d401b48fe9d004aa948 to < 8f3365ed2a5db2ac95ab70a6c47561db39d24537affected
34d1dc17ce978ae76e676d401b48fe9d004aa948 to < b138bc665e21d4422382ab43aebdf0a2b7bb9cb3affected
34d1dc17ce978ae76e676d401b48fe9d004aa948 to < 827ec385458adeeda651de2b6f3537e386b1a8d9affected
34d1dc17ce978ae76e676d401b48fe9d004aa948 to < 4dc1051939e499c838229af035464a5fc7671198affected
34d1dc17ce978ae76e676d401b48fe9d004aa948 to < 9da70a43b5fea60d758137f7f0ccfe19356cb5bbaffected

Linux Linux

Default version status: affected

4.14affected
0 to < 4.14unaffected
5.10.270 to ≤ 5.10.*unaffected
5.15.221 to ≤ 5.15.*unaffected
6.1.188 to ≤ 6.1.*unaffected
6.6.157 to ≤ 6.6.*unaffected
6.12.109 to ≤ 6.12.*unaffected
6.18.50 to ≤ 6.18.*unaffected
7.2.4 to ≤ 7.2.*unaffected
7.3 to ≤ *unaffected

CVE-2026-89730

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

Description

Affected products

Linux Linux

Linux Linux

References