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High severity7.1NVD Advisory· Published May 1, 2025· Updated Aug 4, 2026

CVE-2022-49883

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.

Affected products

7
  • Linux/Kernel6 versions
    cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 5 more
    • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=6.0,<6.0.8
    • cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:*
    • (no CPE)
    • (no CPE)range: 6.0
  • osv-coords
    pkg:linux/kernel
    Range: >= 6.0.0, < 6.0.8

Patches

Vulnerability mechanics

References

2

News mentions

0

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