CVE-2022-34400: dell alienware_m15_r6_firmware Heap-based Buffer Overflow

Vulnerability summary

CVE-2022-34400 is a high (CVSS 7.1) Heap-based Buffer Overflow vulnerability in dell alienware_m15_r6_firmware. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 10.2% of scored vulnerabilities.

Timeline

1. 01-02-2023
   PublishedVulnerability first disclosed.
2. 27-03-2025
   Last modifiedVulnerability information updated.

Description

Dell BIOS contains a heap buffer overflow vulnerability. A local attacker with admin privileges could potentially exploit this vulnerability to perform an arbitrary write to SMRAM during SMM.

• CWE-122Heap-based Buffer OverflowA heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
• CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.