CVE-2026-91780— GNU Binutils elflink.c elf_link_add_object_symbols 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 中发现了一个安全弱点，影响的是 文件中的 函数。攻击者通过精心构造的输入触发操作，可导致空指针解引用（null pointer dereference）。该漏洞需要本地触发，且已有公开的利用程序（exploit），可被用于实际攻击。项目维护方虽已通过漏洞报告提前获知此问题，但尚未作出响应。
Possible ATT&CK Techniques 2 AI
T1059 · Command and Scripting Interpreter T1210 · Exploitation of Remote Services
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I. Basic Information for CVE-2026-91780
Vulnerability Information
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Vulnerability Title
GNU Binutils elflink.c elf_link_add_object_symbols null pointer dereference
Source: CVE Program / CVE List V5
Vulnerability Description
A weakness has been identified in GNU Binutils 2.47. This impacts the function elf_link_add_object_symbols of the file bfd/elflink.c. Executing a manipulation can lead to null pointer dereference. The attack needs to be launched locally. The exploit has been made available to the public and could be used for attacks. 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: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
Affected Products
II. Public POCs for CVE-2026-91780
| # | POC Description | Source Link | Shenlong Link |
|---|
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Proof of Concept for CVE-2026-91780 (1)
Vendor Pages for CVE-2026-91780 (1)
Other References for CVE-2026-91780 (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-2026-91781 | 3.3 LOW | GNU Binutils ELF Section elf64-x86-64.c elf_x86_64_common_section_index null pointer deref |
| CVE-2026-91782 | 3.3 LOW | GNU Binutils Dynamic Relocation Allocation elfxx-x86.c elf_x86_allocate_dynrelocs null poi |
IV. Related Vulnerabilities
Same product: Binutils
-
CVE-2026-91782
GNU Binutils Dynamic Relocation Allocation elfxx-x86.c elf_x -
CVE-2026-91781
GNU Binutils ELF Section elf64-x86-64.c elf_x86_64_common_se -
CVE-2026-91779
GNU Binutils Eh Frame elf-eh-frame.c _bfd_elf_eh_frame_secti -
CVE-2026-90831
GNU Binutils ELF String Table elf-strtab.c _bfd_elf_strtab_d -
CVE-2026-90830
GNU Binutils Section Merge merge.c _bfd_write_merged_section
Same vendor: GNU
-
CVE-2026-91782
GNU Binutils Dynamic Relocation Allocation elfxx-x86.c elf_x -
CVE-2026-91781
GNU Binutils ELF Section elf64-x86-64.c elf_x86_64_common_se -
CVE-2026-91779
GNU Binutils Eh Frame elf-eh-frame.c _bfd_elf_eh_frame_secti -
CVE-2026-91752
GNU libextractor before 1.15 Stack Overflow via OLE2 -
CVE-2026-90831
GNU Binutils ELF String Table elf-strtab.c _bfd_elf_strtab_d
Same weakness: CWE-476
-
CVE-2026-91782
GNU Binutils Dynamic Relocation Allocation elfxx-x86.c elf_x -
CVE-2026-91781
GNU Binutils ELF Section elf64-x86-64.c elf_x86_64_common_se -
CVE-2026-91779
GNU Binutils Eh Frame elf-eh-frame.c _bfd_elf_eh_frame_secti -
CVE-2026-90830
GNU Binutils Section Merge merge.c _bfd_write_merged_section -
CVE-2026-90829
GNU Binutils SHT_GROUP Section elf.c bfd_elf_set_group_conte
V. Comments for CVE-2026-91780
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