CVEvulnerability

CVE-2026-75900

6.1 MEDIUM Published 2026-08-19 Modified 2026-08-21 Official page ↗
Status
Awaiting Analysis
Published
2026-08-19
Last modified
2026-08-21
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.1 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H
Weaknesses
CWE-125

Description

An out-of-bounds read vulnerability was found in swtpm's SWTPM_NVRAM_CheckHeader() function. The entry guard checks the buffer length against sizeof(bh), where bh is a pointer, instead of sizeof(*bh), the actual struct size. This allows an undersized buffer to pass validation, causing a 2-byte heap overread on 64-bit systems (6 bytes on 32-bit) when accessing the totlen field. This may cause daemon termination on some platforms and leaks heap data to the log.

Related

Weakness · CWE (1)

  • CWE-125 Out-of-bounds Read weakness

References