CVE-2026-54332
Medium
Elevated severity or exploit probability.
CVSS base
7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS — probability of exploitation (30 days)
0.8%
54.4th percentile
CISA KEV
Not listed
Weakness / dates
CWE-770
Published 2026-07-28 · modified 2026-08-05
Description
gopacket provides packet processing capabilities for Go. In version 1.6.0 and earlier, the sFlow ExtendedGatewayFlow decoder in layers/sflow.go reads an attacker-controlled 32-bit community count and AS path member count and sizes a slice allocation from those counts without bounding them against the bytes remaining in the datagram, so a 104-byte UDP datagram can drive an allocation of up to 16 GiB and cause an unauthenticated remote denial of service. This issue is fixed in version 1.6.1.
Affected
References
- https://github.com/gopacket/gopacket/commit/76119086f5936aacd7088bdf97d565501bb6c4cc
- https://github.com/gopacket/gopacket/releases/tag/v1.6.1
- exploit https://github.com/gopacket/gopacket/security/advisories/GHSA-g6v3-7xmc-w563
- exploit https://github.com/gopacket/gopacket/security/advisories/GHSA-g6v3-7xmc-w563