Description
A stack buffer overflow in the GDB client's remote protocol handler allows an attacker-controlled debug target to execute arbitrary code in the GDB process. The vulnerability exists in fetch_register_using_p, which decodes a stub's register reply into an alloca-sized buffer without bounding writes by the register width.
No analysis available yet.
Remediation
Vendor Workaround
There is no mitigation for this vulnerability. Users should only connect GDB to trusted debug targets.
Tracking
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Advisories
No advisories yet.
References
History
Thu, 05 Nov 2026 16:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | A stack buffer overflow in the GDB client's remote protocol handler allows an attacker-controlled debug target to execute arbitrary code in the GDB process. The vulnerability exists in fetch_register_using_p, which decodes a stub's register reply into an alloca-sized buffer without bounding writes by the register width. | |
| Title | Gdb: gdb: stack buffer overflow in fetch_register_using_p via unchecked p-reply length | |
| First Time appeared |
Redhat
Redhat enterprise Linux Redhat hummingbird Redhat rhel Els |
|
| Weaknesses | CWE-121 | |
| CPEs | cpe:/a:redhat:enterprise_linux:10 cpe:/a:redhat:enterprise_linux:8 cpe:/a:redhat:enterprise_linux:9 cpe:/a:redhat:hummingbird:1 cpe:/o:redhat:rhel_els:6 cpe:/o:redhat:rhel_els:7 |
|
| Vendors & Products |
Redhat
Redhat enterprise Linux Redhat hummingbird Redhat rhel Els |
|
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2026-11-05T16:08:46.589Z
Reserved: 2026-11-04T13:28:12.838Z
Link: CVE-2026-121994
No data.
Status : Awaiting Analysis
Published: 2026-11-05T17:18:00.503
Modified: 2026-11-05T17:18:00.640
Link: CVE-2026-121994
No data.
OpenCVE Enrichment
No data.
Weaknesses
-
CWE-121
Stack-based Buffer Overflow