CVE-2023-40548
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2023-40548
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-40548.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2023-40548
- Downstream
- Related
- Published
- 2024-01-29T15:15:08Z
- Modified
- 2025-10-16T10:07:29.559146Z
- Severity
-
- 7.4 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
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.
- References
-
- https://access.redhat.com/errata/RHSA-2024:1834
- https://access.redhat.com/errata/RHSA-2024:1835
- https://access.redhat.com/errata/RHSA-2024:1873
- https://access.redhat.com/errata/RHSA-2024:1876
- https://access.redhat.com/errata/RHSA-2024:1883
- https://access.redhat.com/errata/RHSA-2024:1902
- https://access.redhat.com/errata/RHSA-2024:1903
- https://access.redhat.com/errata/RHSA-2024:1959
- https://access.redhat.com/errata/RHSA-2024:2086
- https://access.redhat.com/security/cve/CVE-2023-40548
- https://bugzilla.redhat.com/show_bug.cgi?id=2241782
- https://lists.debian.org/debian-lts-announce/2024/05/msg00009.html