Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-123151— Gdb: gdb: stack buffer overflow in parse_tsv_definition via stale rs->buf tail

Quick assessment

Affected
Red Hat Red Hat Enterprise Linux 10
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 GNU 调试器（GDB）中发现了一个漏洞。当 GDB 连接到远程调试目标时，恶意目标可在 GDB 解析其回复的过程中，导致 GDB 发生栈缓冲区溢出。这可能导致 GDB 崩溃，或允许目标在 GDB 客户端进程中以运行 GDB 的用户的权限执行任意代码。

AI Predicted 8.8 Difficulty: Moderate

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-123151

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Gdb: gdb: stack buffer overflow in parse_tsv_definition via stale rs->buf tail
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Enterprise Linux 10 - cpe:/a:redhat:enterprise_linux:10
Red Hat Red Hat Enterprise Linux 10 - cpe:/a:redhat:enterprise_linux:10
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:rhel_els:6
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:rhel_els:7
Red Hat Red Hat Enterprise Linux 8 - cpe:/a:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 8 - cpe:/a:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 8 - cpe:/a:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 8 - cpe:/a:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 9 - cpe:/a:redhat:enterprise_linux:9
Red Hat Red Hat Enterprise Linux 9 - cpe:/a:redhat:enterprise_linux:9
Red Hat Red Hat Hardened Images - cpe:/a:redhat:hummingbird:1

II. Public POCs for CVE-2026-123151

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-123151

请登录查看更多情报信息。

Other References for CVE-2026-123151 (2)

Same Patch Batch · Red Hat · 2026-11-05 · 24 CVEs total

CVE-2026-117691 9.1 CRITICAL Keycloak-services: keycloak-services: saml redirect binding signature bypass via percent-e
CVE-2026-97175 8.8 HIGH Keycloak-services: keycloak-services: unverified idp email auto-linking enables account ta
CVE-2026-121994 8.8 HIGH Gdb: gdb: stack buffer overflow in fetch_register_using_p via unchecked p-reply length
CVE-2026-121996 8.2 HIGH Gdb: gdbserver: heap disclosure and wild pointer in gdb_parse_agent_expr via untrusted age
CVE-2026-92857 8.1 HIGH Keycloak-services: keycloak-services: dcr protocol mapper config not validated, allowing i
CVE-2026-121997 8.1 HIGH Gdb: gdbserver: heap buffer overflow in cmd_qtdpsrc via qtdpsrc declared/actual length mis
CVE-2026-114232 8.1 HIGH Keycloak-services: keycloak-services: uma protection api resourcetype field not validated
CVE-2026-112208 8.1 HIGH Keycloak-services: keycloak-services: account takeover via stale sso_auth note in organiza
CVE-2026-96453 8.0 HIGH Org.keycloak/keycloak-admin-cli: keycloak-admin-cli: kcadm custom truststore accepts arbit
CVE-2026-107912 7.7 HIGH Io.quarkus/quarkus-vertx-http: quarkus-vertx-http: authorization bypass in management inte
CVE-2026-121995 7.5 HIGH Gdb: gdb: stack buffer overflow in parse_tracepoint_definition via stale rs->buf tail
CVE-2026-107123 7.5 HIGH Keycloak-services: keycloak-services: unauthenticated cpu denial of service via saml xml d
CVE-2026-103112 7.5 HIGH Keycloak-services: keycloak-services: account takeover via authentication race using reset
CVE-2026-107602 7.5 HIGH Keycloak-services: keycloak-services: unauthenticated cpu exhaustion via saml 1.1 keyinfo
CVE-2026-110931 7.5 HIGH Keycloak-services: keycloak-services: unauthenticated jvm termination via saml 1.1 authori
CVE-2026-110932 7.5 HIGH Keycloak-services: keycloak-services: unauthenticated persistent disk exhaustion via theme
CVE-2026-82965 7.5 HIGH Keycloak-services: keycloak-services: unauthenticated denial of service via saml soap endp
CVE-2026-92855 7.4 HIGH Keycloak-services: keycloak-services: saml broker accepts holder-of-key assertions without
CVE-2026-93998 7.4 HIGH Keycloak-core: keycloak-core: saml adapter does not bind signed assertions to the configur
CVE-2026-97847 7.1 HIGH Keycloak-services: keycloak-services: client manager can substitute sessionless token prin

Showing top 20 of 24 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 10
Same vendor: Red Hat
Same weakness: CWE-121