Out-of-bounds Read in Linux
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.
Vulnerability class: Buffer Overflow
EPSS: 0.002 (5.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.
Affected products
- Linux — versions b443183a25ab61840a12de92f8822849e017b9c8, 6.0, 0
- Linux Linux_kernel — versions 6.1
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2022-49883?
- CVE-2022-49883 is a high-severity vulnerability in Linux, classified under Out-of-bounds Read. CVSS score: 7.1/10. Published 2025-05-01.
- How severe is CVE-2022-49883?
- High severity. CVSS v3 base score is 7.1 out of 10.