CVE-2022-49883
N/A
N/A
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | b443183a25ab61840a12de92f8822849e017b9c8 < a7ebfbea0f52550d7cdf12c38f3f5eaa7b2b6494 | affected |
| Linux | Linux | b443183a25ab61840a12de92f8822849e017b9c8 < 696db303e54f7352623d9f640e6c51d8fa9d5588 | affected |
| Linux | Linux | 6.0 | affected |
| Linux | Linux | 0 < 6.0 | unaffected |
| Linux | Linux | 6.0.8 <= 6.0.* | unaffected |
| Linux | Linux | 6.1 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/a7ebfbea0f52550d7cdf12c38f3f5eaa7b2b6494
- https://git.kernel.org/stable/c/696db303e54f7352623d9f640e6c51d8fa9d5588
Feedback
Was this page helpful?
Glad to hear it! Please tell us how we can improve.
Sorry to hear that. Please tell us how we can improve.