CVE-2026-89730

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux34d1dc17ce978ae76e676d401b48fe9d004aa948 < 447b3c893987a0106a65f04b62ec3271892e9d98affected
LinuxLinux34d1dc17ce978ae76e676d401b48fe9d004aa948 < 3b8938f5fbcf4a918785f9cb4b108782eb4ea717affected
LinuxLinux34d1dc17ce978ae76e676d401b48fe9d004aa948 < 2564ac3d3b8b47cd9692a5bf42d668ed7218b54eaffected
LinuxLinux34d1dc17ce978ae76e676d401b48fe9d004aa948 < 8f3365ed2a5db2ac95ab70a6c47561db39d24537affected
LinuxLinux34d1dc17ce978ae76e676d401b48fe9d004aa948 < b138bc665e21d4422382ab43aebdf0a2b7bb9cb3affected
LinuxLinux34d1dc17ce978ae76e676d401b48fe9d004aa948 < 827ec385458adeeda651de2b6f3537e386b1a8d9affected
LinuxLinux34d1dc17ce978ae76e676d401b48fe9d004aa948 < 4dc1051939e499c838229af035464a5fc7671198affected
LinuxLinux34d1dc17ce978ae76e676d401b48fe9d004aa948 < 9da70a43b5fea60d758137f7f0ccfe19356cb5bbaffected
LinuxLinux4.14affected
LinuxLinux0 < 4.14unaffected
LinuxLinux5.10.270 <= 5.10.*unaffected
LinuxLinux5.15.221 <= 5.15.*unaffected
LinuxLinux6.1.188 <= 6.1.*unaffected
LinuxLinux6.6.157 <= 6.6.*unaffected
LinuxLinux6.12.109 <= 6.12.*unaffected
LinuxLinux6.18.50 <= 6.18.*unaffected
LinuxLinux7.2.4 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References