PatchTheCVECVE-2023-47252: An issue was discovered in PnpSmm in Insyde InsydeH2O with kernel 5.0 through 5.6
CVE-2023-47252 is a medium-severity flaw (CVSS 6.3) affecting kernel. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
An issue was discovered in PnpSmm in Insyde InsydeH2O with kernel 5.0 through 5.6. There is a possible out-of-bounds access in the SMM communication buffer, leading to tampering. The PNP-related SMI sub-functions do not verify data size before getting it from the communication buffer, which could lead to possible circumstances where the data immediately following the command buffer could be destroyed with a fixed value. This is fixed in kernel 5.
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 6.3 (Medium) |
| Attack vector | Local |
| Attack complexity | High |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.1% (top 96%) |
| CISA exploited list | No |
| Weakness | CWE-787 |
| Published | 2024-04-26 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2023-47252?
kernel: upgrade to 5.28.45, 5.37.45, 5.45.45, 5.53.45, 5.60.45. Exact commands for each OS are on this page.
Is CVE-2023-47252 being exploited?
CVE-2023-47252 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2023-47252 affect?
CVE-2023-47252 affects kernel. Severity is medium (CVSS 6.3). An issue was discovered in PnpSmm in Insyde InsydeH2O with kernel 5.0 through 5.6. There is a possible out-of-bounds access in the SMM communication buffer, leading to tampering. The PNP-related SMI sub-functions do not verify data size bef
How urgent is CVE-2023-47252?
Priority 23/100. No elevated risk signals yet.
Related CVEs
- CVE-2024-52880 HIGH 7.9 UPGRADE An issue was discovered in Insyde InsydeH2O kernel 5.2 before version 05.29.50, kernel 5.3 before version 05.3
- CVE-2024-49200 MEDIUM 6.4 MITIGATE An issue was discovered in AcpiS3SaveDxe and ChipsetSvcDxe in Insyde InsydeH2O with kernel 5.2 though 5.7
- CVE-2022-46897 MEDIUM 5.3 UPGRADE An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5