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swtpm

A security update for swtpm addresses an out-of-bounds read vulnerability (CVE-2026-75900) caused by a mismatch between the size of a pointer and a structure in the SWTPM_NVRAM_CheckHeader function. This flaw could lead to memory safety issues. The vulnerability is classified as CWE-125 (Out-of-bounds Read) and affects multiple specific versions of swtpm. The severity is assessed as medium.

CVE-2026-75900 is an out-of-bounds read vulnerability in the swtpm component, specifically in the SWTPM_NVRAM_CheckHeader function. The issue arises due to a mismatch between sizeof(pointer) and sizeof(struct), leading to improper memory access. This vulnerability has been addressed in swtpm updates. Multiple versions, including various Ubuntu and SUSE package versions, are affected. No known exploits in the wild have been reported.

Detailed information about An out-of-bounds read vulnerability was found in swtpm's SWTPM_NVRAM_CheckHeader() function. (CVE-2026-75900). Get real-time updates,

An out-of-bounds read vulnerability was found in swtpm's SWTPM_NVRAM_CheckHeader() function. (CVE-2026-75900) - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2026-75900 Swtpm: swtpm: out-of-bounds read in swtpm_nvram_checkheader due to sizeof(pointer) vs sizeof(struct) mismatch - VEX

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URL for SUSE-SU-2026:23927-1

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SUSE Bug 1275653

Security update for swtpm

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