Buffer Overflow Vulnerability in GNU Debugger (GDB) from Red Hat
CVE-2026-123151

Currently unrated

Key Information:

Vendor

Red Hat
Status
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Vendor
CVE Published:
5 November 2026

What is CVE-2026-123151?

A vulnerability exists in the GNU Debugger (GDB) that can be exploited when it connects to a remote debug target. A malicious target can manipulate responses to GDB, leading to a buffer overflow on the stack. This may result in GDB crashing or potentially allow the execution of arbitrary code within the GDB client process, operated under the user's privileges. Awareness and remediation of this vulnerability are essential for maintaining system security.

References

https://access.redhat.com/security/cve/CVE-2026-123151
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2567333
issue-trackingx_refsource_REDHAT

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Pulkit Singh Singaria for reporting this issue.
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