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CVE-2026-90830— GNU Binutils Section Merge merge.c _bfd_write_merged_section null pointer dereference

Quick assessment

Affected
GNU Binutils
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 GNU Binutils 2.47 中发现了一个安全漏洞。受影响的组件是“Section Merge”（节合并）中 文件里的 函数。该函数的操作会导致空指针解引用（null pointer dereference）问题。攻击需要在本地环境中执行。该漏洞的利用方法已被公开披露，因此可能被实际利用。项目方已通过 bug 报告较早地获知了此问题，但截至目前尚未作出回应。

CVSS 5.3 · Medium
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I. Basic Information for CVE-2026-90830

Vulnerability Information
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Vulnerability Title
GNU Binutils Section Merge merge.c _bfd_write_merged_section null pointer dereference
Source: CVE Program / CVE List V5
Vulnerability Description
A security vulnerability has been detected in GNU Binutils 2.47. Impacted is the function _bfd_write_merged_section of the file bfd/merge.c of the component Section Merge. The manipulation leads to null pointer dereference. The attack needs to be performed locally. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through a bug report but has not responded yet.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
GNU Binutils 2.47 cpe:2.3:a:gnu:binutils:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-90830

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III. Intelligence Information for CVE-2026-90830

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Patches & Fixes for CVE-2026-90830 (1)

Vendor Pages for CVE-2026-90830 (1)

Other References for CVE-2026-90830 (1)

Same Patch Batch · GNU · 2026-09-14 · 9 CVEs total

CVE-2026-90801 5.3 MEDIUM GNU Binutils ld cache.c cache_bwrite buffer overflow
CVE-2026-90803 5.3 MEDIUM GNU Binutils ld elf64-x86-64.c elf_x86_64_relocate_section buffer overflow
CVE-2026-90828 5.3 MEDIUM GNU Binutils ELF Orphan Section ldelf.c elf_orphan_compatible null pointer dereference
CVE-2026-90829 5.3 MEDIUM GNU Binutils SHT_GROUP Section elf.c bfd_elf_set_group_contents null pointer dereference
CVE-2026-90831 5.3 MEDIUM GNU Binutils ELF String Table elf-strtab.c _bfd_elf_strtab_delref memory corruption
CVE-2026-90804 4.8 MEDIUM GNU Binutils Eh Frame Section elf-eh-frame.c _bfd_elf_write_section_eh_frame buffer overfl
CVE-2026-90802 4.4 MEDIUM GNU Binutils ld libbfd.c bfd_putl64 null pointer dereference
CVE-2026-90622 3.3 LOW GNU libredwg Layer Encoding dwg.spec DWG_TABLE null pointer dereference

IV. Related Vulnerabilities

Same product: Binutils
Same vendor: GNU
Same weakness: CWE-476

V. Comments for CVE-2026-90830

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