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CVE-2026-89730

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

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.109, and 2 more
None on Exploit-DB, Metasploit or GitHub

Summary

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.

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • Linux Linux

    From 34d1dc17ce978ae76e676d401b48fe9d004aa948 · fixed in 447b3c893987a0106a65f04b62ec3271892e9d98; From 34d1dc17ce978ae76e676d401b48fe9d004aa948 · fixed in 3b8938f5fbcf4a918785f9cb4b108782eb4ea717; From 34d1dc17ce978ae76e676d401b48fe9d004aa948 · fixed in 2564ac3d3b8b47cd9692a5bf42d668ed7218b54e; From 34d1dc17ce978ae76e676d401b48fe9d004aa948 · fixed in 8f3365ed2a5db2ac95ab70a6c47561db39d24537; From 34d1dc17ce978ae76e676d401b48fe9d004aa948 · fixed in b138bc665e21d4422382ab43aebdf0a2b7bb9cb3; From 34d1dc17ce978ae76e676d401b48fe9d004aa948 · fixed in 827ec385458adeeda651de2b6f3537e386b1a8d9; From 34d1dc17ce978ae76e676d401b48fe9d004aa948 · fixed in 4dc1051939e499c838229af035464a5fc7671198; From 34d1dc17ce978ae76e676d401b48fe9d004aa948 · fixed in 9da70a43b5fea60d758137f7f0ccfe19356cb5bb

  • Linux Linux

    4.14

  • KernelLinux

    From 4.14.0 · fixed in 5.10.270; From 5.11.0 · fixed in 5.15.221; From 5.16.0 · fixed in 6.1.188; From 6.2.0 · fixed in 6.6.157; From 6.7.0 · fixed in 6.12.109; From 6.13.0 · fixed in 6.18.50; From 6.19.0 · fixed in 7.2.4

References 8

git.kernel.org