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CVE-2026-58216— Samba kpasswd服务解析畸形ASN.1导致内存越界读取崩溃

CVSS 5.3 · Medium

可能的 ATT&CK 技术 1AI

T1499.002 · Service Exhaustion Flood

影响版本矩阵 7

厂商产品版本范围状态
Red HatRed Hat Enterprise Linux 10全部unknown
Red HatRed Hat Enterprise Linux 6全部unknown
全部unknown
Red HatRed Hat Enterprise Linux 7全部unknown
Red HatRed Hat Enterprise Linux 8全部unknown
Red HatRed Hat Enterprise Linux 9全部unknown
Red HatRed Hat OpenShift Container Platform 4全部unknown
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一、 漏洞 CVE-2026-58216 基础信息

漏洞信息
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Vulnerability Title
Samba: kpasswd service: kpasswd packet that contains malformed asn.1 might cause the server to access 6 bytes of unallocated memory leading server to crash
来源: CVE Program / CVE List V5
Vulnerability Description
An out-of-bounds read flaw was found in Samba's Kerberos Key Distribution Center's (KDC) password change (kpasswd) service. When processing malformed ASN.1-encoded Kerberos password change request, Samba server miscalculates the structure size and attempts to read up to six bytes beyond the end of the allocated buffer. While this out-of-bounds read typically results in a harmless decryption failure, if the read hits unmapped memory, it causes the KDC process to crash. An authenticated attacker can send a specially crafted kpasswd request containing malformed ASN.1 data to trigger the out-of-bounds read, which may cause the KDC process to terminate, resulting in a denial of service.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
来源: CVE Program / CVE List V5

受影响产品

厂商产品影响版本CPE订阅
Red HatRed Hat Enterprise Linux 10-cpe:/o:redhat:enterprise_linux:10
Red HatRed Hat Enterprise Linux 6-cpe:/o:redhat:enterprise_linux:6
Red HatRed Hat Enterprise Linux 6-cpe:/o:redhat:enterprise_linux:6
Red HatRed Hat Enterprise Linux 7-cpe:/o:redhat:enterprise_linux:7
Red HatRed Hat Enterprise Linux 8-cpe:/o:redhat:enterprise_linux:8
Red HatRed Hat Enterprise Linux 9-cpe:/o:redhat:enterprise_linux:9
Red HatRed Hat OpenShift Container Platform 4-cpe:/a:redhat:openshift:4

二、漏洞 CVE-2026-58216 的公开POC

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三、漏洞 CVE-2026-58216 的情报信息

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CVE-2026-58216 厂商安全公告 (3)

CVE-2026-58216 其他参考 (1)

同批安全公告 · Red Hat · 2026-07-30 · 共 15 条

CVE-2026-582228.8 HIGHSamba LDAP比较过滤器注入及可信请求混淆泄露受保护属性
CVE-2026-165268.8 HIGHPCP linux_sockets pmda提权至root漏洞
CVE-2026-165247.8 HIGHPCP linux_sockets pmda 命令注入漏洞
CVE-2026-183787.6 HIGHkoku-metrics-operator 集群拉取密钥泄露漏洞
CVE-2026-183817.6 HIGHkoku-metrics-operator 服务账户令牌泄露漏洞
CVE-2026-165297.5 HIGHPCP 服务拒绝访问漏洞：有符号整数溢出
CVE-2026-165277.3 HIGHPCP pmproxy /store 端点未授权访问漏洞
CVE-2026-183826.8 MEDIUMkoku-metrics-operator 令牌URL凭据泄露漏洞
CVE-2026-165306.5 MEDIUMPCP 远程拒绝服务与信息泄露漏洞
CVE-2026-685626.2 MEDIUMAnsible redhat-leapp 集合通过篡改报告泄露信息
CVE-2026-183695.8 MEDIUMRedHat PKI acme http-01验证SSRF漏洞
CVE-2026-685635.5 MEDIUMAnsible-collection-redhat-leapp PostgreSQL数据信息泄露漏洞
CVE-2026-582185.3 MEDIUMSamba DNS密钥缓存耗尽导致拒绝服务漏洞
CVE-2026-165315.3 MEDIUMPcp pmproxy路径遍历导致任意文件创建漏洞

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 10
Same vendor: Red Hat
Same weakness: CWE-125

V. Comments for CVE-2026-58216

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