CVE-2026-91782
GNU Binutils Dynamic Relocation Allocation elfxx-x86.c elf_x86_allocate_dynrelocs null pointer dereference
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.
INFO
Published Date :
Sept. 15, 2026, 9:16 a.m.
Last Modified :
Sept. 17, 2026, 2:17 p.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 2.0 | LOW | [email protected] | ||||
| CVSS 3.1 | LOW | [email protected] | ||||
| CVSS 4.0 | LOW | [email protected] |
Solution
- Upgrade GNU Binutils to version 2.48.
- Apply the provided patch for elf_x86_allocate_dynrelocs.
- Update the affected component.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-91782.
| URL | Resource |
|---|---|
| https://github.com/Ech06/CVE_submit/tree/main/bugzilla/pocs/34448 | Third Party Advisory |
| https://sourceware.org/bugzilla/show_bug.cgi?id=34448 | Exploit Third Party Advisory |
| https://vuldb.com/cve/CVE-2026-91782 | Third Party Advisory |
| https://vuldb.com/submit/933335 | Exploit |
| https://vuldb.com/vuln/404053 | Permissions Required |
| https://vuldb.com/vuln/404053/cti | Permissions Required |
| https://www.gnu.org/ | Product |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-91782 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-91782
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-91782 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-91782 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Sep. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-91782', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-09-17T14:00:57.902776Z'} -
Initial Analysis by [email protected]
Sep. 16, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:gnu:binutils:2.47:*:*:*:*:*:*:* Added Reference Type VulDB: https://github.com/Ech06/CVE_submit/tree/main/bugzilla/pocs/34448 Types: Third Party Advisory Added Reference Type VulDB: https://sourceware.org/bugzilla/show_bug.cgi?id=34448 Types: Exploit, Third Party Advisory Added Reference Type VulDB: https://vuldb.com/cve/CVE-2026-91782 Types: Third Party Advisory Added Reference Type VulDB: https://vuldb.com/submit/933335 Types: Exploit Added Reference Type VulDB: https://vuldb.com/vuln/404053 Types: Permissions Required Added Reference Type VulDB: https://vuldb.com/vuln/404053/cti Types: Permissions Required Added Reference Type VulDB: https://www.gnu.org/ Types: Product -
New CVE Received by [email protected]
Sep. 15, 2026
Action Type Old Value New Value Added 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. Added CVSS V4.0 AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L Added CVSS V2 (AV:L/AC:L/Au:S/C:N/I:N/A:P) Added CWE CWE-476 Added CWE CWE-404 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/91xxx/CVE-2026-91782.json">CVE-2026-91782</a> Added Reference https://github.com/Ech06/CVE_submit/tree/main/bugzilla/pocs/34448 Added Reference https://sourceware.org/bugzilla/show_bug.cgi?id=34448 Added Reference https://vuldb.com/cve/CVE-2026-91782 Added Reference https://vuldb.com/submit/933335 Added Reference https://vuldb.com/vuln/404053 Added Reference https://vuldb.com/vuln/404053/cti Added Reference https://www.gnu.org/