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CVE-2026-91782— GNU Binutils Dynamic Relocation Allocation elfxx-x86.c elf_x86_allocate_dynrelocs 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.

GNU Binutils是美国GNU基金会开源的一套二进制工具集合。 GNU Binutils 2.47版本存在安全漏洞，该漏洞源于Dynamic Relocation Allocation组件中文件bfd/elfxx-x86.c的elf_x86_allocate_dynrelocs函数处理不当，可能导致空指针取消引用，攻击需本地访问。

CVSS 3.3 · Low EPSS 0.18% · P7

Affected Version Matrix 2

VendorProduct Version RangeStatus
GNU Binutils 2.47 affected
2.48 unaffected
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I. Basic Information for CVE-2026-91782

Vulnerability Information
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Vulnerability Title
GNU Binutils Dynamic Relocation Allocation elfxx-x86.c elf_x86_allocate_dynrelocs null pointer dereference
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was detected in GNU Binutils 2.47. Affected by this vulnerability is the function elf_x86_allocate_dynrelocs of the file bfd/elfxx-x86.c of the component Dynamic Relocation Allocation. The manipulation results in null pointer dereference. The attack requires a local approach. The exploit is now public and may be used. Upgrading to version 2.48 addresses this issue. The patch is identified as d1268210b6f6/471130b39c0/283d3198bed/0a84e560216/a692a633d40. Upgrading the affected component is recommended.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
GNU Binutils 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GNU Binutils是美国GNU基金会开源的一套二进制工具集合。 GNU Binutils 2.47版本存在安全漏洞，该漏洞源于Dynamic Relocation Allocation组件中文件bfd/elfxx-x86.c的elf_x86_allocate_dynrelocs函数处理不当，可能导致空指针取消引用，攻击需本地访问。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

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

II. Public POCs for CVE-2026-91782

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III. Intelligence Information for CVE-2026-91782

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Proof of Concept for CVE-2026-91782 (1)

Vendor Pages for CVE-2026-91782 (1)

Other References for CVE-2026-91782 (1)

Same Patch Batch · GNU · 2026-09-15 · 5 CVEs total

CVE-2026-91752 7.5 HIGH GNU libextractor before 1.15 Stack Overflow via OLE2
CVE-2026-91779 3.3 LOW GNU Binutils Eh Frame elf-eh-frame.c _bfd_elf_eh_frame_section_offset null pointer derefer
CVE-2026-91780 3.3 LOW GNU Binutils elflink.c elf_link_add_object_symbols null pointer dereference
CVE-2026-91781 3.3 LOW GNU Binutils ELF Section elf64-x86-64.c elf_x86_64_common_section_index null pointer deref

IV. Related Vulnerabilities

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