OSV-2026-98

See a problem?
Import Source
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/dnsmasq/OSV-2026-98.yaml
JSON Data
https://api.osv.dev/v1/vulns/OSV-2026-98
Published
2026-01-21T00:16:59.551255Z
Modified
2026-01-21T00:16:59.551548Z
Summary
Heap-buffer-overflow in hostname_issubdomain
Details

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=476539622

Crash type: Heap-buffer-overflow READ 1
Crash state:
hostname_issubdomain
fuzz_util.c
References

Affected packages

OSS-Fuzz / dnsmasq

Package

Name
dnsmasq
Purl
pkg:generic/dnsmasq

Affected ranges

Type
GIT
Repo
git://thekelleys.org.uk/dnsmasq.git
Events
Introduced
1269f074f86bb959863012063060a3a082d37dc4
Fixed
1eab169173fc4c8579a3db61186096fe117e6aca

Affected versions

v2.*
v2.93test1
v2.93test2
v2.93test3
v2.93test4
v2.93test5
v2.93test6

Ecosystem specific

{
    "severity": "MEDIUM"
}

Database specific

fixed_range
"cb321709e9f20cd0949aa375dad2b97050394659:1eab169173fc4c8579a3db61186096fe117e6aca"
introduced_range
"e1faf705c96352906e5b867cdd772eb2808e394c:cb321709e9f20cd0949aa375dad2b97050394659"
source
"https://github.com/google/oss-fuzz-vulns/blob/main/vulns/dnsmasq/OSV-2026-98.yaml"