https://bugzilla.mindrot.org/show_bug.cgi?id=3508
Bug ID: 3508
Summary: Memory leak in auth-pam
Product: Portable OpenSSH
Version: 9.1p1
Hardware: Other
OS: Linux
Status: NEW
Severity: enhancement
Priority: P5
Component: PAM support
Assignee: [email protected]
Reporter: [email protected]
In auth-pam.c, in sshpam_init, where the SSH_CONNECTION environment
variable is being set, xasprintf is used. It allocates memory for the
formatted string and returns it via the global sshpam_conninfo, which
is later passed to pam_putenv, which copies the string. So memory under
sshpam_conninfo is never freed, and then a reference to it is lost on
another run of sshpam_init
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