DEBIAN-CVE-2026-3184
Record from OSV · Published April 3, 2026
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.
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| util-linux | Debian:14 | 2.42-1 |
Risk scores
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Debian:12 | util-linux | 0, 2.38.1-5, 2.38.1-5+deb12u1 |
| Debian:13 | util-linux | 0, 2.41-5, 2.41.1-1 |
| Debian:14 | util-linux | 0, 2.41-5, 2.41.1-1 |
Timeline
- Apr 3, 2026 CVE Published
- Oct 1, 2026 CVE Updated
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