# CVE-2026-111436: openEuler iSulad memory leak in mount spec parsing

Source: https://junglewise.ai/threats/cve-2026-111436-missing-release-of-memory-after-effective-lifetime-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-12. Updated: 2026-11-12  
License: CC BY 4.0 with a link back

CVE-2026-111436 · Severity: medium · CVSS 4.4 · Published 2026-11-12

openEuler iSulad is a container runtime daemon used to manage containerized applications on Linux systems. A memory leak vulnerability in its mount specification parsing causes the daemon to gradually exhaust the host machine's memory, leading to crashes and denial of service that can disrupt container operations and system availability.

Technologies: [openEuler iSulad](https://junglewise.ai/threats/technologies/isulad). Vendors: [openEuler](https://junglewise.ai/threats/vendors/openeuler).

## Quick answers

**Is CVE-2026-111436 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-111436 being exploited in the wild.

**How severe is CVE-2026-111436?** Medium severity, with a CVSS score of 4.4, published 12 November 2026.

**Which products and versions are affected?** openEuler iSulad through 2.1.6.

**Is there a fix for CVE-2026-111436?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-111436 attacked?** It is attacked with local access, in an operating system.

**Am I affected by CVE-2026-111436?** Check whether you run openEuler iSulad at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A missing memory release (CWE-401) vulnerability exists in src/daemon/modules/spec/specs_mount.c in iSulad's mount specification handling. The vulnerability is triggered by repeated daemon activity, allowing an authenticated or local attacker to exhaust host memory over time. Exploitation requires access to trigger mount spec operations, and results in an out-of-memory condition that terminates the iSulad daemon.

## Affected products

- openEuler iSulad through 2.1.6

## Timeline

- 2026-11-12: disclosed

## References

- [https://atomgit.com/src-openeuler/iSulad](https://atomgit.com/src-openeuler/iSulad)
- [https://atomgit.com/openeuler/iSulad/commit/d48130e6d16d603a9c12333b03bd74d63891ab87?ref=master&prId=2651](https://atomgit.com/openeuler/iSulad/commit/d48130e6d16d603a9c12333b03bd74d63891ab87?ref=master&prId=2651)

## Related threats

- [openEuler iSulad relative path traversal in manifest loading](https://junglewise.ai/threats/cve-2026-111435-relative-path-traversal-vulnerability-in-openeuler-isulad-on)
- [openEuler iSulad format string vulnerability in oci_load](https://junglewise.ai/threats/cve-2026-111434-use-of-externally-controlled-format-string-vulnerability-in)
- [openEuler iSulad symlink following in container mount](https://junglewise.ai/threats/cve-2026-111433-unix-symbolic-link-symlink-following-vulnerability-in-openeuler)