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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-89730
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-11 20:20:03 UTC
Updated2026-09-11 20:20:03 UTC
DescriptionIn 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.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 34d1dc17ce978ae76e676d401b48fe9d004aa948 b138bc665e21d4422382ab43aebdf0a2b7bb9cb3 git Not specified
CNA Linux Linux affected 34d1dc17ce978ae76e676d401b48fe9d004aa948 827ec385458adeeda651de2b6f3537e386b1a8d9 git Not specified
CNA Linux Linux affected 34d1dc17ce978ae76e676d401b48fe9d004aa948 4dc1051939e499c838229af035464a5fc7671198 git Not specified
CNA Linux Linux affected 34d1dc17ce978ae76e676d401b48fe9d004aa948 9da70a43b5fea60d758137f7f0ccfe19356cb5bb git Not specified
CNA Linux Linux affected 4.14 Not specified
CNA Linux Linux unaffected 4.14 semver Not specified
CNA Linux Linux unaffected 6.12.109 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.50 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.4 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/827ec385458adeeda651de2b6f3537e386b1a8d9 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/b138bc665e21d4422382ab43aebdf0a2b7bb9cb3 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/9da70a43b5fea60d758137f7f0ccfe19356cb5bb 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/4dc1051939e499c838229af035464a5fc7671198 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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