low3.7
CVE-2026-3184
A flaw was found in util-linux.
Impact
A flaw was found in util-linux. Improper hostname canonicalization in the `login(1)` utility, when invoked with the `-h` option, can modify the supplied remote hostname before setting `PAM_RHOST`. A remote attacker could exploit this by providing a specially crafted hostname, potentially bypassing host-based Pluggable Authentication Modules (PAM) access control rules that rely on fully qualified domain names. This could lead to unauthorized access.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Kernel | Util-Linux | All versions |
| Redhat | Hardened Images | All versions |