SEPTEMBER 20, 2026
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Case File

CVE-2026-80639

UNKNOWN · CVSS N/A EPSS 0.17%

Source: NVD + CISA KEV + EPSS · Published 2026-08-28 · Last synced 2026-09-20

CyberRota Analysis

AI-Generated

A buffer overflow vulnerability exists in the Linux kernel's cxl/test module, specifically in the setup_xor_mapping() function, which could lead to runtime assertions and potential system instability. This issue may affect systems utilizing the affected Linux kernel versions, and it is crucial for system administrators and security teams managing Linux environments to prioritize applying the fix to mitigate any risks associated with this vulnerability.

CVE
CVE-2026-80639
Severity
UNKNOWN
CVSS
N/A
EPSS
0.17%
Linux

Original NVD Description

In the Linux kernel, the following vulnerability has been resolved: cxl/test: Fix __fortify_panic Fix a runtime assertion in setup_xor_mapping(). Fortify complains that it is potentially overflowing the xormaps array per __counted_by(nr_maps). Quiet the false positive by initializing @nr_maps earlier. memcpy: detected buffer overflow: 32 byte write of buffer size 0 WARNING: lib/string_helpers.c:1036 at __fortify_report+0x4d/0xa0, CPU#8: modprobe/2728 Call Trace: __fortify_panic+0xd/0xf setup_xor_mapping+0x6c/0xa0 [cxl_translate] [ dj: Fixed up @nr_entries to @nr_maps in commit log. ]