CVE-2023-40548
Published: Jan 29, 2024
Modified: Nov 20, 2025
CVSS v3.1
7.4
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.
| Vendor | Product | Versions |
|---|---|---|
Red Hat | Red Hat Enterprise Linux 7 | unaffected 0:15.8-3.el7 - < * |
Red Hat | Red Hat Enterprise Linux 7 | unaffected 0:15.8-1.el7 - < * |
Red Hat | Red Hat Enterprise Linux 8 | unaffected 0:15.8-4.el8_9 - < * |
Red Hat | Red Hat Enterprise Linux 8.2 Advanced Update Support | unaffected 0:15.8-2.el8_2 - < * |
Red Hat | Red Hat Enterprise Linux 8.2 Telecommunications Update Service | unaffected 0:15.8-2.el8_2 - < * |
Red Hat | Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions | unaffected 0:15.8-2.el8_2 - < * |
Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | unaffected 0:15.8-2.el8_4 - < * |
Red Hat | Red Hat Enterprise Linux 8.4 Telecommunications Update Service | unaffected 0:15.8-2.el8_4 - < * |
Red Hat | Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions | unaffected 0:15.8-2.el8_4 - < * |
Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support | unaffected 0:15.8-2.el8_6 - < * |
Red Hat | Red Hat Enterprise Linux 8.8 Extended Update Support | unaffected 0:15.8-2.el8 - < * |
Red Hat | Red Hat Enterprise Linux 8.8 Extended Update Support | unaffected 0:15.8-2.el8 - < * |
Red Hat | Red Hat Enterprise Linux 9 | unaffected 0:15.8-4.el9_3 - < * |
Red Hat | Red Hat Enterprise Linux 9.0 Extended Update Support | unaffected 0:15.8-3.el9 - < * |
Red Hat | Red Hat Enterprise Linux 9.0 Extended Update Support | unaffected 0:15.8-2.el9 - < * |
Red Hat | Red Hat Enterprise Linux 9.0 Extended Update Support | unaffected 0:15.8-2.el9 - < * |
Red Hat | Red Hat Enterprise Linux 9.2 Extended Update Support | unaffected 0:15.8-3.el9_2 - < * |
Weaknesses (CWE)
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
References
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