zsh through version 5.4.2 is vulnerable to a stack-based buffer overflow in the exec.c:hashcmd() function. A local attacker could exploit this to cause a denial of service.
[
{
"product": "zsh",
"vendor": "zsh",
"versions": [
{
"status": "affected",
"version": "5.4.2"
}
]
}
]