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Affected Component
Analysis
libssh
Patched
Name
CVE-2025-8277
Description
A flaw was found in libssh's handling of key exchange (KEX) processes when a client repeatedly sends incorrect KEX guesses. The library fails to free memory during these rekey operations, which can gradually exhaust system memory. This issue can lead to crashes on the client side, particularly when using libgcrypt, which impacts application stability and availability.
CWEs
Published Date
Updated Date
Workaround
-
Advisories
Analysis#
Vulnerability Ratings#
3.1
CVSSv31
NaN
other
Others affected components#
Resolved with patches#
libssh (yocto:kirkstone)
#
Title
Author
Resolve
1
CVE-2025-8277: ecdh: Free previously allocated pubkeys
Jakub Jelen <jjelen@redhat.com>
CVE-2025-8277
2
CVE-2025-8277: Fix memory leak of unused ephemeral key
Francesco Rollo <eferollo@gmail.com>
CVE-2025-8277
3
CVE-2025-8277: mbedtls: Avoid leaking ecdh keys
Jakub Jelen <jjelen@redhat.com>
CVE-2025-8277
libssh (yocto:scarthgap)
#
Title
Author
Resolve
1
CVE-2025-8277: Fix memory leak of unused ephemeral key pair
Francesco Rollo <eferollo@gmail.com>
CVE-2025-8277
2
CVE-2025-8277: packet: Adjust packet filter to work when DH-GEX is
Jakub Jelen <jjelen@redhat.com>
CVE-2025-8277
3
CVE-2025-8277: mbedtls: Avoid leaking ecdh keys
Jakub Jelen <jjelen@redhat.com>
CVE-2025-8277
4
CVE-2025-8277: ecdh: Free previously allocated pubkeys
Jakub Jelen <jjelen@redhat.com>
CVE-2025-8277