Detections
Analytics
CVE-2022-49883
high
Description
In the Linux kernel, the following vulnerability has been resolved: KVM: x86: smm: number of GPRs in the SMRAM image depends on the image format On 64 bit host, if the guest doesn't have X86_FEATURE_LM, KVM will access 16 gprs to 32-bit smram image, causing out-ouf-bound ram access. On 32 bit host, the rsm_load_state_64/enter_smm_save_state_64 is compiled out, thus access overflow can't happen.
References
https://git.kernel.org/stable/c/a7ebfbea0f52550d7cdf12c38f3f5eaa7b2b6494
https://git.kernel.org/stable/c/696db303e54f7352623d9f640e6c51d8fa9d5588