Description
FreeRADIUS before 1.0.1 allows remote attackers to cause a denial of service (core dump) via malformed USR vendor-specific attributes (VSA) that cause a memcpy operation with a -1 argument.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | freeradius | 1.0.1 | — |
| Debian 13 | freeradius | 1.0.1 | — |
| Debian 12 | freeradius | 1.0.1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 3 | freeradius | 1.0.1-1.RHEL3 | RHSA-2004:609 |
Advisories 1
- RHSA-2004:609 Red Hat Security Advisory: freeradius security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
References
- GLSA-200409-29 vendor-advisory
- 11222 vdb-entry
- freeradius-dos(17440) vdb-entry
- VU#541574 third-party-advisory
- oval:org.mitre.oval:def:11023 vdb-entry signature