CVE-2026-15813

kronosnet: A vulnerability was found in the network packet de-fragmentation engine of kronosnet (Version affected <= 1.34)

CVE-2026-15813 is fixed in kronosnet on 1 platform, first by DEBIAN-CVE-2026-15813, released July 20, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine
CVSS
6.5
medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0036
29th percentile

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.

Where it's fixed

ProductFixed inFixReleased
Linux
kronosnet · Debian 14 1.35-1 DEBIAN-CVE-2026-15813 Jul 20, 2026
kronosnet · opensuse-leap 16.0 1.30-160000.4.1 OPENSUSE-SU-2026:21851-1 Sep 15, 2026
kronosnet · sles 16.0 1.30-160000.4.1 SUSE-SU-2026:23782-1 Sep 15, 2026

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