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CVE-2026-90803

GNU Binutils ld elf64-x86-64.c elf_x86_64_relocate_section buffer overflow

MEDIUM
6.8
CVSS Score
Published: September 14, 2026 at 04:45 PM UTC
Updated: September 18, 2026 at 02:59 PM UTC
1 product affected across 1 vendorBinutils

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Severity
MEDIUM6.8
Exploit prediction
EPSS 0.2%
SSVC
PoC

Description

A security vulnerability has been detected in GNU Binutils 2.47. Affected by this vulnerability is the function elf_x86_64_relocate_section of the file bfd/elf64-x86-64.c of the component ld. Such manipulation of the argument roff leads to buffer overflow. An attack has to be approached locally. The exploit has been disclosed publicly and may be used. Upgrading to version 2.48 addresses this issue. The name of the patch is 471130b39c03623ec6d78ece377ff4da3f6bfe7b. It is recommended to upgrade the affected component.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Binutils· Gnu
95%
2.47
Vendor states this is fixed in 2.48 (unaffected)

References (8)

VDB EntryTechnical DescriptionPermissions RequiredThird Party Advisory
Source: cverecord
https://vuldb.com/vuln/403305
SignaturePermissions RequiredThird Party AdvisoryVDB Entry
Source: cverecord
https://vuldb.com/vuln/403305/cti
Third Party AdvisoryPermissions RequiredVDB Entry
Source: cverecord
https://vuldb.com/cve/CVE-2026-90803
Third Party AdvisoryPermissions RequiredVDB Entry
Source: cverecord
https://vuldb.com/submit/920280
Issue TrackingExploitThird Party Advisory
Source: cverecord
https://sourceware.org/bugzilla/show_bug.cgi?id=34444
ExploitMitigationThird Party Advisory
Source: cverecord
https://github.com/r1ck9-2q/cve_summit/blob/main/Heap%20OOB%20readwrite%20and%20SEGV%20in%20%60elf_x86_64_relocate_section%60%20(bfdelf64-x86-64.c4530%20%204835)%20via%20malformed%20relocation.md
Patch
Source: cverecord
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=471130b39c03623ec6d78ece377ff4da3f6bfe7b
Broken LinkProduct
Source: cverecord
https://www.gnu.org/

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.8MEDIUM[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
LOW
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-120CWE-119

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