| Package | Affected versions | Patched versions |
|---|---|---|
| ircd-hybrid | = 7.2.0= 7.2.1= 7.2.2= 7.2.3= 7.3.0= 7.3.1= 8.0.0= 8.0.1= 8.0.2= 8.0.3= 8.0.4≤ 8.0.5 |
The try_parse_v4_netmask function in hostmask.c in IRCD-Hybrid before 8.0.6 does not properly validate masks, which allows remote attackers to cause a denial of service (crash) via a mask that causes a negative number to be parsed.
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