CVE-2022-49883KVM: x86: smm: number of GPRs in the SMRAM image depends on the image format
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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Free account, 1 product
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.
- CVSS
- 7.1 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 15, 2026
Affected products
Linux Linux linux:linux (from the name) | from b443183a25ab61840a12de92f8822849e017b9c8 before a7ebfbea0f52550d7cdf12c38f3f5eaa7b2b6494; from b443183a25ab61840a12de92f8822849e017b9c8 before 696db303e54f7352623d9f640e6c51d8fa9d5588 | CNA record |
linux linux_kernel linux:linux_kernel | from 6.0 before 6.0.8; 6.1; 6.1; 6.1 | NVD |
References
- https://git.kernel.org/stable/c/a7ebfbea0f52550d7cdf12c38f3f5eaa7b2b6494patch
- https://git.kernel.org/stable/c/696db303e54f7352623d9f640e6c51d8fa9d5588patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.