Pcapplusplus: Use-of-uninitialized-value in pcpp::IPv6Extension::getExtensionLen
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=486705308 ``` Crash type: Use-of-uninitialized-value Crash state: pcpp::IPv6Extension::getExtensionLen pcpp::IPv6Layer::parseExtensions pcpp::IPv6Layer::IPv6Layer ```
AI Analysis
Technical Summary
The vulnerability is a use-of-uninitialized-value error occurring in the getExtensionLen method of the IPv6Extension class within Pcapplusplus. The crash occurs during the parsing of IPv6 extensions in the IPv6Layer component. This flaw was discovered through OSS-Fuzz testing and affects versions 24.09, 25.05, and 26.07 of Pcapplusplus. The issue can cause a crash due to reading uninitialized memory, which may impact the stability of applications using these versions of the library.
Potential Impact
The vulnerability can cause a crash in applications using the affected versions of Pcapplusplus when processing IPv6 packets with extensions. This may lead to denial of service or application instability. There is no indication of code execution or data corruption beyond the crash from the provided data.
Mitigation Recommendations
A patch is available for this vulnerability. Users should update to a fixed version of Pcapplusplus beyond the affected versions 24.09, 25.05, and 26.07. No additional mitigation steps are indicated by the vendor or OSS-Fuzz report.
Pcapplusplus: Use-of-uninitialized-value in pcpp::IPv6Extension::getExtensionLen
Description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=486705308 ``` Crash type: Use-of-uninitialized-value Crash state: pcpp::IPv6Extension::getExtensionLen pcpp::IPv6Layer::parseExtensions pcpp::IPv6Layer::IPv6Layer ```
Affected software
pkg:generic/pcapplusplusRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability is a use-of-uninitialized-value error occurring in the getExtensionLen method of the IPv6Extension class within Pcapplusplus. The crash occurs during the parsing of IPv6 extensions in the IPv6Layer component. This flaw was discovered through OSS-Fuzz testing and affects versions 24.09, 25.05, and 26.07 of Pcapplusplus. The issue can cause a crash due to reading uninitialized memory, which may impact the stability of applications using these versions of the library.
Potential Impact
The vulnerability can cause a crash in applications using the affected versions of Pcapplusplus when processing IPv6 packets with extensions. This may lead to denial of service or application instability. There is no indication of code execution or data corruption beyond the crash from the provided data.
Mitigation Recommendations
A patch is available for this vulnerability. Users should update to a fixed version of Pcapplusplus beyond the affected versions 24.09, 25.05, and 26.07. No additional mitigation steps are indicated by the vendor or OSS-Fuzz report.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- OSV-2026-301
- Osv Schema Version
- 1.7.5
- Ecosystems
- ["OSS-Fuzz"]
Threat ID: 6a75f706bf8831d53984e35b
Added to database: 08/07/2026, 15:17:26 UTC
Last enriched: 08/07/2026, 15:18:55 UTC
Last updated: 09/08/2026, 01:29:46 UTC
Views: 15
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