CVE-2023-40551
Medium
Description
A flaw was found in the MZ binary format in Shim. An out-of-bounds read may occur, leading to a crash or possible exposure of sensitive data during the system's boot phase.
SeverityMedium
CVSS5.1
Exploit probability—
Product
Redhat Shim
PublishedJan 29, 2024
First seenJan 29, 2024
Weakness typeCWE-125Out-of-bounds read
How to fix
Update
- redhat shim15.8 or later
Vendor advisories
- access.redhat.com/errata/RHSA-2024:1834
- access.redhat.com/errata/RHSA-2024:1835
- access.redhat.com/errata/RHSA-2024:1873
- access.redhat.com/errata/RHSA-2024:1876
- access.redhat.com/errata/RHSA-2024:1883
- access.redhat.com/errata/RHSA-2024:1902
- access.redhat.com/errata/RHSA-2024:1903
- access.redhat.com/errata/RHSA-2024:1959
- access.redhat.com/errata/RHSA-2024:2086
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| redhat shim | v < 15.8 | 15.8 |
| fedoraproject fedora | 39 | — |
| redhat enterprise_linux | 8.0, 9.0 | — |
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