CVE-2026-89730fpga: altera-cvp: Avoid out-of-bounds read in trailing byte write
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Sep 14, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 34d1dc17ce978ae76e676d401b48fe9d004aa948 before 447b3c893987a0106a65f04b62ec3271892e9d98; 34d1dc17ce978ae76e676d401b48fe9d004aa948 builds before 3b8938f5fbcf4a918785f9cb4b108782eb4ea717; from 34d1dc17ce978ae76e676d401b48fe9d004aa948 before 2564ac3d3b8b47cd9692a5bf42d668ed7218b54e; 34d1dc17ce978ae76e676d401b48fe9d004aa948 builds before 8f3365ed2a5db2ac95ab70a6c47561db39d24537; from 34d1dc17ce978ae76e676d401b48fe9d004aa948 before b138bc665e21d4422382ab43aebdf0a2b7bb9cb3; from 34d1dc17ce978ae76e676d401b48fe9d004aa948 before 827ec385458adeeda651de2b6f3537e386b1a8d9; 34d1dc17ce978ae76e676d401b48fe9d004aa948 builds before 4dc1051939e499c838229af035464a5fc7671198; 34d1dc17ce978ae76e676d401b48fe9d004aa948 builds before 9da70a43b5fea60d758137f7f0ccfe19356cb5bb | CNA record |
References
- https://git.kernel.org/stable/c/447b3c893987a0106a65f04b62ec3271892e9d98
- https://git.kernel.org/stable/c/3b8938f5fbcf4a918785f9cb4b108782eb4ea717
- https://git.kernel.org/stable/c/2564ac3d3b8b47cd9692a5bf42d668ed7218b54e
- https://git.kernel.org/stable/c/8f3365ed2a5db2ac95ab70a6c47561db39d24537
- https://git.kernel.org/stable/c/b138bc665e21d4422382ab43aebdf0a2b7bb9cb3
- https://git.kernel.org/stable/c/827ec385458adeeda651de2b6f3537e386b1a8d9
- https://git.kernel.org/stable/c/4dc1051939e499c838229af035464a5fc7671198
- https://git.kernel.org/stable/c/9da70a43b5fea60d758137f7f0ccfe19356cb5bb
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.