CVE-2026-3238— Samba: denial of service against ad dc wins server
Possible ATT&CK Techniques 1AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 7
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | any | unaffected |
| Red Hat | Red Hat Enterprise Linux 6 | any | unaffected |
any | unaffected | ||
| Red Hat | Red Hat Enterprise Linux 7 | any | unaffected |
| Red Hat | Red Hat Enterprise Linux 8 | any | unaffected |
| Red Hat | Red Hat Enterprise Linux 9 | any | unaffected |
| Red Hat | Red Hat OpenShift Container Platform 4 | any | affected |
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I. Basic Information for CVE-2026-3238
Vulnerability Information
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Vulnerability Title
Samba: denial of service against ad dc wins server
Source: NVD (National Vulnerability Database)
Vulnerability Description
A flaw was found in Samba’s WINS server component when running as an Active Directory Domain Controller. The WINS protocol handlers for certain request types did not properly validate incoming packets, allowing an unauthenticated remote attacker to trigger a NULL pointer dereference and crash the WINS service using specially crafted UDP packets.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
空指针解引用
Source: NVD (National Vulnerability Database)
Vulnerability Title
Samba 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Samba是Samba开源的一个适用于 Linux 和 Unix 的标准 Windows 互操作性程序套件。 Samba存在代码问题漏洞，该漏洞源于作为Active Directory域控制器运行时，WINS协议处理程序未正确验证传入数据包，允许未经身份验证的远程攻击者通过特制UDP数据包触发空指针取消引用并导致WINS服务崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | - | cpe:/o:redhat:enterprise_linux:10 | |
| Red Hat | Red Hat Enterprise Linux 6 | - | cpe:/o:redhat:enterprise_linux:6 | |
| Red Hat | Red Hat Enterprise Linux 6 | - | cpe:/o:redhat:enterprise_linux:6 | |
| Red Hat | Red Hat Enterprise Linux 7 | - | cpe:/o:redhat:enterprise_linux:7 | |
| Red Hat | Red Hat Enterprise Linux 8 | - | cpe:/o:redhat:enterprise_linux:8 | |
| Red Hat | Red Hat Enterprise Linux 9 | - | cpe:/o:redhat:enterprise_linux:9 | |
| Red Hat | Red Hat OpenShift Container Platform 4 | - | cpe:/a:redhat:openshift:4 |
II. Public POCs for CVE-2026-3238
| # | POC Description | Source Link | Shenlong Link |
|---|
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No public POC found.
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Vendor Advisories for CVE-2026-3238 (3)
- 🔗 2486176 – (CVE-2026-3238) CVE-2026-3238 samba: Denial of service against AD DC WINS server Read full article issue-trackingx_refsource_REDHAT
Same Patch Batch · Red Hat · 2026-06-08 · 3 CVEs total
| CVE-2026-11611 | 6.5 MEDIUM | 389-ds-base: 389-ds-base: content sync plugin unbounded queue growth and race conditions |
| CVE-2026-11569 | 5.4 MEDIUM | Quay: quay: stored xss via filedrop svg upload |
IV. Related Vulnerabilities
Same product: Red Hat Enterprise Linux 10
- CVE-2026-14612
Freeipa: ipa: idm: freeipa: off-by-one buffer overflows in i - CVE-2026-14544
Hplip: incomplete fix for cve-2026-8631 - CVE-2026-14330
Pipewire: pulse server alloca stack overflow - CVE-2026-14324
Pipewire: raop rtsp null deref - CVE-2026-14258
Dhcpcd: dhcpcd infinite loop and out-of-bounds read via zero
Same vendor: Red Hat
- CVE-2026-58379
Gimp: gimp: heap buffer overflow in read_channel_data() - CVE-2026-14615
Keycloak-services: keycloak: fgap v2 parent group children e - CVE-2026-14614
Keycloak-services: keycloak-services: fgap v2 client scope a - CVE-2026-14613
Keycloak-services: keycloak-services: keycloak: fgap v2 role - CVE-2026-14612
Freeipa: ipa: idm: freeipa: off-by-one buffer overflows in i
Same weakness: CWE-476
- CVE-2026-13084
Null Pointer Dereference in WatchGuard Fireware OS iked Proc - CVE-2026-14324
Pipewire: raop rtsp null deref - CVE-2026-20457
MediaTek chipset 异常处理不当漏洞 - CVE-2026-58369
Woodpecker < 3.15.0 - Unauthenticated NULL Pointer Dereferen - CVE-2026-10648
NULL-pointer dereference in MCUmgr serial/console SMP transp
V. Comments for CVE-2026-3238
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