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libssh: libssh: denial of service via zero advertised channel packet size

🗓️ 21 Jul 2026 16:32:37Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 6 Views

libssh flaw allows zero channel size in SSH_MSG_CHANNEL_OPEN, causing writes and denial of service.

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Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Hardened Imagesanyaarch64libssh0.12.1-4.hum1libssh-0.12.1-4.hum1.aarch64.rpm
Red Hat Hardened Imagesanyx86_64libssh0.12.1-4.hum1libssh-0.12.1-4.hum1.x86_64.rpm
Red Hat Hardened Imagesanynoarchlibssh-config0.12.1-4.hum1libssh-config-0.12.1-4.hum1.noarch.rpm

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24 Jul 2026 13:27Current
5.3Medium risk
Vulners AI Score5.3
CVSS 3.16.5
EPSS0.00536
SSVC
6