CVE-2026-89909

Summary

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().

Affected Software

VendorProductVersion RangeStatus
LinuxLinux2bd6ac68726131da32ace9717aa63ff68cf6605c < 6bbbd7b719233645a5c120557a9ca1422e6b7a48affected
LinuxLinux2bd6ac68726131da32ace9717aa63ff68cf6605c < 6b78786ee7260d9818cf1d7a245b7a655ef83076affected
LinuxLinux2bd6ac68726131da32ace9717aa63ff68cf6605c < 3bf6f5e2e1007d38a5f35bd37e94ab645a0c40bcaffected
LinuxLinux2bd6ac68726131da32ace9717aa63ff68cf6605c < f7a1064cce3b100b54780c68529176232d8eb01eaffected
LinuxLinux6.7affected
LinuxLinux0 < 6.7unaffected
LinuxLinux6.12.110 <= 6.12.*unaffected
LinuxLinux6.18.51 <= 6.18.*unaffected
LinuxLinux7.2.5 <= 7.2.*unaffected
LinuxLinux7.3-rc2 <= *unaffected

Weaknesses

References