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CVE-2026-15811— Kronosnet: kronosnet: encryption key exposure in memory after cryptographic configuration changes

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.

Kronosnet Kronosnet是Kronosnet组织的一个网络抽象层，专为高可用性用例而设计，其中冗余、安全性、容错性和快速故障转移是核心要求。 Kronosnet存在信息泄露漏洞，该漏洞源于密码配置管理未正确清理敏感内存段，导致加密密钥残留，本地攻击者可利用内存泄露技术获取密钥，解密集群通信或注入恶意分组造成高可用集群不稳定。

CVSS 5.8 · Medium EPSS 0.06% · P0

Affected Version Matrix 4

VendorProduct Version RangeStatus
Red Hat Red Hat Enterprise Linux 10 any affected
Red Hat Red Hat Enterprise Linux 8 any affected
Red Hat Red Hat Enterprise Linux 9 any affected
Red Hat Red Hat OpenShift Container Platform 4 any affected
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I. Basic Information for CVE-2026-15811

Vulnerability Information
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Vulnerability Title
Kronosnet: kronosnet: encryption key exposure in memory after cryptographic configuration changes
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in kronosnet's (version <=1.34) cryptographic configuration management. The framework does not correctly zero-out or wipe sensitive memory segments after executing changes to its cryptographic configuration. This omission leaves raw encryption keys resident in memory after the associated structures are freed. A local attacker capable of leveraging memory disclosure techniques could exploit this flaw to retrieve the active encryption key, allowing them to decrypt cluster network communications or inject malicious packets to cause severe high-availability cluster instability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
敏感数据的不恰当跨边界移除
Source: CVE Program / CVE List V5
Vulnerability Title
Kronosnet 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Kronosnet Kronosnet是Kronosnet组织的一个网络抽象层，专为高可用性用例而设计，其中冗余、安全性、容错性和快速故障转移是核心要求。 Kronosnet存在信息泄露漏洞，该漏洞源于密码配置管理未正确清理敏感内存段，导致加密密钥残留，本地攻击者可利用内存泄露技术获取密钥，解密集群通信或注入恶意分组造成高可用集群不稳定。
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 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-2026-15811

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III. Intelligence Information for CVE-2026-15811

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Vendor Advisories for CVE-2026-15811 (2)

Same Patch Batch · Red Hat · 2026-07-21 · 20 CVEs total

CVE-2026-59851 8.8 HIGH Libssh: libssh: authentication bypass via missing gssapi principal check
CVE-2026-16493 7.8 HIGH Ansible-core: argument injection in ansible-galaxy collection install via git clone (incom
CVE-2026-16445 7.5 HIGH Dracut: dracut: root code execution via dhcp options command injection in networkmanager i
CVE-2026-15927 6.8 MEDIUM Quay: mirror-registry: ssrf: repo-level mirror accepts external_reference without url vali
CVE-2026-15370 6.7 MEDIUM Libssh: libssh: stack buffer overflow in sftp server longname construction
CVE-2026-59843 6.5 MEDIUM Libssh: libssh: denial of service via zero advertised channel packet size
CVE-2026-16461 6.5 MEDIUM Rpcbind: rpcbind: stack buffer overflow in rpcinfo rpcbdump() short-mode version-list form
CVE-2026-59844 6.5 MEDIUM Libssh: libssh: denial of service via oversized sftp read length
CVE-2026-59847 5.9 MEDIUM Libssh: libssh: integrity downgrade via openssl aes-gcm tag verification
CVE-2026-59845 5.3 MEDIUM Libssh: libssh: denial of service via unchecked proxycommand fork() failure
CVE-2026-59848 5.3 MEDIUM Libssh: libssh: denial of service via sftp responses with unknown request ids
CVE-2026-15812 4.8 MEDIUM Kronosnet: kronosnet: access control list bypass via link id spoofing on unencrypted dynam
CVE-2026-59850 4.3 MEDIUM Libssh: libssh: use-after-free via data callbacks on closed channels
CVE-2026-12548 4.2 MEDIUM Libsoup: heap out-of-bounds read in libsoup due to integer truncation
CVE-2026-59846 3.9 LOW Libssh: libssh: information disclosure via proxycommand %r username expansion
CVE-2026-59842 3.7 LOW Libssh: libssh: information disclosure via short gssapi curve25519 public key
CVE-2026-12547 3.4 LOW Libsoup: information disclosure in libsoup via soupauthmanager proxy credential leak on pr
CVE-2026-59849 3.1 LOW Libssh: libssh: denial of service via automatic certificate authentication loop
CVE-2026-16517 2.9 LOW Libarchive: libarchive: signed integer overflow in archive_write_zip_header

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 10
Same vendor: Red Hat
Same weakness: CWE-212

V. Comments for CVE-2026-15811

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