CVE-2026-15813

MEDIUM

Kronosnet: kronosnet: memory corruption and out-of-bounds access via malformed network packet defragmentation

Title source: cna
STIX 2.1

Description

A vulnerability was found in the network packet de-fragmentation engine of kronosnet (Version affected <= 1.34). The internal reassembly code does not properly validate sequence numbers of incoming payload fragments. An attacker can exploit this lack of verification by transmitting malformed packets with corrupted sequence parameters. Under specific conditions, this forces the packet processing layer to parse data outside the designated bounds of the internal memory structures, causing an out-of-bounds memory access or heap corruption. This behavior can result in sudden application crashes or system instability.

References (2)

Core 2
Core References
Vdb Entry, X_Refsource_Redhat vdb-entry x_refsource_redhat
https://access.redhat.com/security/cve/CVE-2026-15813
Issue Tracking, X_Refsource_Redhat issue-tracking x_refsource_redhat
RHBZ#2500854
https://bugzilla.redhat.com/show_bug.cgi?id=2500854

Scores

CVSS v3 6.5
EPSS 0.0027
EPSS Percentile 18.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-787
Status published
Products (4)
Red Hat/Red Hat Enterprise Linux 10
Red Hat/Red Hat Enterprise Linux 8
Red Hat/Red Hat Enterprise Linux 9
Red Hat/Red Hat OpenShift Container Platform 4
Published Jul 20, 2026
Tracked Since Jul 20, 2026