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CVE-2026-89730

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

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.

Timeline

  1. ID reserved

    By Linux

  2. Published

  3. · 38 days later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.

EPSS (exploitation in 30 days)
0.22% · top 88% of all CVEs (11 Nov 2026)
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.

Affected products

  • Linux · Linux

    • affected 34d1dc17ce978ae76e676d401b48fe9d004aa948 – < 447b3c893987a0106a65f04b62ec3271892e9d98
    • affected 34d1dc17ce978ae76e676d401b48fe9d004aa948 – < 3b8938f5fbcf4a918785f9cb4b108782eb4ea717
    • affected 34d1dc17ce978ae76e676d401b48fe9d004aa948 – < 2564ac3d3b8b47cd9692a5bf42d668ed7218b54e
    • affected 34d1dc17ce978ae76e676d401b48fe9d004aa948 – < 8f3365ed2a5db2ac95ab70a6c47561db39d24537
    • affected 34d1dc17ce978ae76e676d401b48fe9d004aa948 – < b138bc665e21d4422382ab43aebdf0a2b7bb9cb3
    • affected 34d1dc17ce978ae76e676d401b48fe9d004aa948 – < 827ec385458adeeda651de2b6f3537e386b1a8d9
    • affected 34d1dc17ce978ae76e676d401b48fe9d004aa948 – < 4dc1051939e499c838229af035464a5fc7671198
    • affected 34d1dc17ce978ae76e676d401b48fe9d004aa948 – < 9da70a43b5fea60d758137f7f0ccfe19356cb5bb
  • Linux · Linux

    • affected 4.14
    • unaffected < 4.14
    • unaffected 5.10.270 – ≤ 5.10.*
    • unaffected 5.15.221 – ≤ 5.15.*
    • unaffected 6.1.188 – ≤ 6.1.*
    • unaffected 6.6.157 – ≤ 6.6.*
    • unaffected 6.12.109 – ≤ 6.12.*
    • unaffected 6.18.50 – ≤ 6.18.*
    • unaffected 7.2.4 – ≤ 7.2.*
    • unaffected 7.3 – ≤ *

References

References8

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .