vulnerability
Oracle Linux: CVE-2023-40548: ELSA-2024-1902: shim security update (IMPORTANT) (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:L/AC:M/Au:N/C:C/I:C/A:C) | Oct 3, 2023 | Apr 24, 2024 | Dec 3, 2025 |
Severity
7
CVSS
(AV:L/AC:M/Au:N/C:C/I:C/A:C)
Published
Oct 3, 2023
Added
Apr 24, 2024
Modified
Dec 3, 2025
Description
A buffer overflow was found in Shim in the 32-bit system. The overflow happens due to an addition operation involving a user-controlled value parsed from the PE binary being used by Shim. This value is further used for memory allocation operations, leading to a heap-based buffer overflow. This flaw causes memory corruption and can lead to a crash or data integrity issues during the boot phase.
Solutions
oracle-linux-upgrade-mokutiloracle-linux-upgrade-shim-aa64oracle-linux-upgrade-shim-ia32oracle-linux-upgrade-shim-unsigned-x64oracle-linux-upgrade-shim-x64
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