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CVE-2026-90831— GNU Binutils ELF String Table elf-strtab.c _bfd_elf_strtab_delref memory corruption

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 中发现了一个漏洞。受影响的部分是 ELF 字符串表组件中 文件里的 函数。该操作会导致内存损坏。攻击需要采用本地方式。该漏洞的利用方式已经公开，并且可能被利用。项目方通过漏洞报告较早地获知了该问题，但截至目前尚未作出回应。

CVSS 5.3 · Medium

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2026-90831

Vulnerability Information
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Vulnerability Title
GNU Binutils ELF String Table elf-strtab.c _bfd_elf_strtab_delref memory corruption
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was detected in GNU Binutils 2.47. The affected element is the function _bfd_elf_strtab_delref of the file bfd/elf-strtab.c of the component ELF String Table. The manipulation results in memory corruption. The attack requires a local approach. The exploit is now public 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
内存缓冲区边界内操作的限制不恰当
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-2026-90831

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III. Intelligence Information for CVE-2026-90831

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Patches & Fixes for CVE-2026-90831 (1)

Vendor Pages for CVE-2026-90831 (1)

Other References for CVE-2026-90831 (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-2026-90830 5.3 MEDIUM GNU Binutils Section Merge merge.c _bfd_write_merged_section null pointer dereference
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-119

V. Comments for CVE-2026-90831

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