{"id":"CVE-2022-49883","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: x86: smm: number of GPRs in the SMRAM image depends on the image format\n\nOn 64 bit host, if the guest doesn't have X86_FEATURE_LM, KVM will\naccess 16 gprs to 32-bi…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: x86: smm: number of GPRs in the SMRAM image depends on the image format\n\nOn 64 bit host, if the guest doesn't have X86_FEATURE_LM, KVM will\naccess 16 gprs to 32-bi…","severity":"high","cvss":7.1,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","cwe":["CWE-125"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 6.0, < 6.0.8","linux_kernel = 6.1"],"patched":["linux_kernel 6.0.8"],"published":"2025-05-01","updated":"2026-10-15","sourceUpdated":"2026-10-15T22:17:25.527","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2022-49883","references":[{"url":"https://git.kernel.org/stable/c/696db303e54f7352623d9f640e6c51d8fa9d5588","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a7ebfbea0f52550d7cdf12c38f3f5eaa7b2b6494","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.00186,"epssPercentile":0.0812,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-15T21:29:37.620177Z"},"ingestedAt":"2026-10-15T21:45:11.286Z","slug":"CVE-2022-49883","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nKVM: x86: smm: number of GPRs in the SMRAM image depends on the image format\n\nOn 64 bit host, if the guest doesn't have X86_FEATURE_LM, KVM will\naccess 16 gprs to 32-bit smram image, causing out-ouf-bound ram\naccess.\n\nOn 32 bit host, the rsm_load_state_64/enter_smm_save_state_64\nis compiled out, thus access overflow can't happen.\n\n## Affected\n\n- `linux_kernel >= 6.0, < 6.0.8`\n- `linux_kernel = 6.1`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.0.8`","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":39.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}