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libssh: Memory Exhaustion via Repeated Key Exchange in libssh

🗓️ 19 May 2026 13:16:29Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 11 Views

libssh memory exhaustion occurs during repeated incorrect key exchange guesses; memory is not freed during rekeys.

Related
Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9aarch64libssh0.10.4-18.el9libssh-0.10.4-18.el9.aarch64.rpm
Red Hat Enterprise Linux9i686libssh0.10.4-18.el9libssh-0.10.4-18.el9.i686.rpm
Red Hat Enterprise Linux9ppc64lelibssh0.10.4-18.el9libssh-0.10.4-18.el9.ppc64le.rpm
Red Hat Enterprise Linux9s390xlibssh0.10.4-18.el9libssh-0.10.4-18.el9.s390x.rpm
Red Hat Enterprise Linux9x86_64libssh0.10.4-18.el9libssh-0.10.4-18.el9.x86_64.rpm
Red Hat Enterprise Linux9noarchlibssh-config0.10.4-18.el9libssh-config-0.10.4-18.el9.noarch.rpm
Red Hat Enterprise Linux9aarch64libssh-debuginfo0.10.4-18.el9libssh-debuginfo-0.10.4-18.el9.aarch64.rpm
Red Hat Enterprise Linux9i686libssh-debuginfo0.10.4-18.el9libssh-debuginfo-0.10.4-18.el9.i686.rpm
Red Hat Enterprise Linux9ppc64lelibssh-debuginfo0.10.4-18.el9libssh-debuginfo-0.10.4-18.el9.ppc64le.rpm
Red Hat Enterprise Linux9s390xlibssh-debuginfo0.10.4-18.el9libssh-debuginfo-0.10.4-18.el9.s390x.rpm
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03 Jul 2026 00:44Current
6.4Medium risk
Vulners AI Score6.4
CVSS 3.13.1
EPSS0.00375
SSVC
11