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
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 | 0:15.8-3.el7 |
| Red Hat | Red Hat Enterprise Linux 7 | 0:15.8-1.el7 |
| Red Hat | Red Hat Enterprise Linux 8 | 0:15.8-4.el8_9 |
| Red Hat | Red Hat Enterprise Linux 8.2 Advanced Update Support | 0:15.8-2.el8_2 |
| Red Hat | Red Hat Enterprise Linux 8.2 Telecommunications Update Service | 0:15.8-2.el8_2 |
| Red Hat | Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions | 0:15.8-2.el8_2 |
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | 0:15.8-2.el8_4 |
| Red Hat | Red Hat Enterprise Linux 8.4 Telecommunications Update Service | 0:15.8-2.el8_4 |
| Red Hat | Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions | 0:15.8-2.el8_4 |
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support | 0:15.8-2.el8_6 |
| Red Hat | Red Hat Enterprise Linux 8.8 Extended Update Support | 0:15.8-2.el8 |
| Red Hat | Red Hat Enterprise Linux 8.8 Extended Update Support | 0:15.8-2.el8 |
| Red Hat | Red Hat Enterprise Linux 9 | 0:15.8-4.el9_3 |
| Red Hat | Red Hat Enterprise Linux 9.0 Extended Update Support | 0:15.8-3.el9 |
| Red Hat | Red Hat Enterprise Linux 9.0 Extended Update Support | 0:15.8-2.el9 |
| Red Hat | Red Hat Enterprise Linux 9.0 Extended Update Support | 0:15.8-2.el9 |
| Red Hat | Red Hat Enterprise Linux 9.2 Extended Update Support | 0:15.8-3.el9_2 |
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.