Vulnerability Details CVE-2022-49883
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 4.7%
CVSS Severity
CVSS v3 Score 7.1
References
Products affected by CVE-2022-49883
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cpe:2.3:o:linux:linux_kernel:6.0
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cpe:2.3:o:linux:linux_kernel:6.0.1
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cpe:2.3:o:linux:linux_kernel:6.0.2
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cpe:2.3:o:linux:linux_kernel:6.0.3
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cpe:2.3:o:linux:linux_kernel:6.0.4
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cpe:2.3:o:linux:linux_kernel:6.0.5
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cpe:2.3:o:linux:linux_kernel:6.0.6
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cpe:2.3:o:linux:linux_kernel:6.0.7
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cpe:2.3:o:linux:linux_kernel:6.1