CVE-2026-123151 Gdb: gdb: stack buffer overflow in parse_tsv_definition via stale rs->buf tail
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-123151?
CVE-2026-123151 is a high-severity vulnerability in Red Hat Enterprise Linux 10, published on 5 Nov 2026.
Official description
A flaw was found in the GNU debugger (GDB). When GDB connects to a remote debug target, a malicious target can cause GDB to overflow a buffer on the stack while parsing the target's replies. This can crash GDB or potentially allow the target to execute arbitrary code in the GDB client process with the privileges of the user running GDB.
Weakness: CWE-121
Which versions are affected by CVE-2026-123151?
How do I fix CVE-2026-123151?
No fix has been published for CVE-2026-123151 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-123151 being exploited?
There is no known exploitation of CVE-2026-123151 in the wild and no public exploit code.
Sources
Also known as AZL-113131, AZL-113158, DEBIAN-CVE-2026-123151, GHSA-f82m-v9ch-rh67, UBUNTU-CVE-2026-123151.