CVE-2026-89730 is a vulnerability in Linux Kernel
Published on September 11, 2026
fpga: altera-cvp: Avoid out-of-bounds read in trailing byte write
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.
Products Associated with CVE-2026-89730
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Affected Versions
Linux:- Version 34d1dc17ce978ae76e676d401b48fe9d004aa948 and below b138bc665e21d4422382ab43aebdf0a2b7bb9cb3 is affected.
- Version 34d1dc17ce978ae76e676d401b48fe9d004aa948 and below 827ec385458adeeda651de2b6f3537e386b1a8d9 is affected.
- Version 34d1dc17ce978ae76e676d401b48fe9d004aa948 and below 4dc1051939e499c838229af035464a5fc7671198 is affected.
- Version 34d1dc17ce978ae76e676d401b48fe9d004aa948 and below 9da70a43b5fea60d758137f7f0ccfe19356cb5bb is affected.
- Version 4.14 is affected.
- Before 4.14 is unaffected.
- Version 6.12.109, <= 6.12.* is unaffected.
- Version 6.18.50, <= 6.18.* is unaffected.
- Version 7.2.4, <= 7.2.* is unaffected.
- Version 7.3-rc1, <= * is unaffected.