CVE-2026-89730

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

N/A
Published: September 11, 2026 at 07:46 PM UTC
Updated: October 19, 2026 at 09:18 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
N/A
Exploit prediction
EPSS 0.2%

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

34d1dc17ce978ae76e676d401b48fe9d004aa9484.14
Vendor states this is fixed in 2564ac3d3b8b47cd9692a5bf42d668ed7218b54e (fixed)
Vendor states this is fixed in 3b8938f5fbcf4a918785f9cb4b108782eb4ea717 (fixed)
Vendor states this is fixed in 447b3c893987a0106a65f04b62ec3271892e9d98 (fixed)
Vendor states this is fixed in 4dc1051939e499c838229af035464a5fc7671198 (fixed)
Vendor states this is fixed in 827ec385458adeeda651de2b6f3537e386b1a8d9 (fixed)
Vendor states this is fixed in 8f3365ed2a5db2ac95ab70a6c47561db39d24537 (fixed)
Vendor states this is fixed in 9da70a43b5fea60d758137f7f0ccfe19356cb5bb (fixed)
Vendor states this is fixed in b138bc665e21d4422382ab43aebdf0a2b7bb9cb3 (fixed)
Vendor states this is fixed in 4.14 (unaffected)
Vendor states this is fixed in 5.10.270 (unaffected)
Vendor states this is fixed in 5.15.221 (unaffected)
Vendor states this is fixed in 6.1.188 (unaffected)
Vendor states this is fixed in 6.12.109 (unaffected)
Vendor states this is fixed in 6.18.50 (unaffected)
Vendor states this is fixed in 6.6.157 (unaffected)
Vendor states this is fixed in 7.2.4 (unaffected)
Vendor states this is fixed in 7.3 (unaffected)
Vendor states this is fixed in 7.3-rc1 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

Quick Info

StatusRECEIVED

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