CVE-2022-49883

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.

Reserved 2025-05-01 | Published 2025-05-01 | Updated 2025-05-04 | Assigner Linux

Product status

Default status
unaffected

b443183a25ab61840a12de92f8822849e017b9c8 before a7ebfbea0f52550d7cdf12c38f3f5eaa7b2b6494
affected

b443183a25ab61840a12de92f8822849e017b9c8 before 696db303e54f7352623d9f640e6c51d8fa9d5588
affected

Default status
affected

6.0
affected

Any version before 6.0
unaffected

6.0.8
unaffected

6.1
unaffected

References

git.kernel.org/...c/a7ebfbea0f52550d7cdf12c38f3f5eaa7b2b6494

git.kernel.org/...c/696db303e54f7352623d9f640e6c51d8fa9d5588

cve.org (CVE-2022-49883)

nvd.nist.gov (CVE-2022-49883)

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