SEPTEMBER 18, 2026
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Case File

CVE-2026-89556

UNKNOWN · CVSS N/A EPSS 0.20%

Source: NVD + CISA KEV + EPSS · Published 2026-09-11 · Last synced 2026-09-18

CyberRota Analysis

AI-Generated

The vulnerability in the Linux kernel affects the handling of section name tables and symbol string tables, where improper validation may lead to out-of-bounds memory access. This flaw can potentially allow an attacker to exploit the kernel, leading to system instability or unauthorized access. Organizations using Linux should prioritize this issue to mitigate risks associated with kernel-level vulnerabilities.

CVE
CVE-2026-89556
Severity
UNKNOWN
CVSS
N/A
EPSS
0.20%
Linux

Original NVD Description

In the Linux kernel, the following vulnerability has been resolved: module: validate string table section types In elf_validity_cache_sechdrs, section sizes and offsets are validated, unless the section type is SHT_NULL or SHT_NOBITS. Later, elf_validity_cache_secstrings and elf_validity_cache_index_str access the section name table (.shstrtab) and symbol string table (.strtab) headers without first ensuring that their types are SHT_STRTAB. If a section type is SHT_NULL or SHT_NOBITS, sh_offset has not been validated and may reference out-of-bounds memory when dereferenced in elf_validity_cache_secstrings or elf_validity_cache_strtab. Validate that both string section headers are of type SHT_STRTAB before caching them.