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Details of issue NIXPKGS-2026-2186

NIXPKGS-2026-2186
published 1 day, 20 hours ago
Kronosnet: kronosnet: memory corruption and out-of-bounds access via malformed network packet defragmentation
Permalink CVE-2026-15813
6.5 MEDIUM
  • CVSS version (CVSS): 3.1
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): High (H)
  • Privileges Required (PR): None (N)
  • User Interaction (UI): None (N)
  • Scope (S): Unchanged (U)
  • Confidentiality (C): None (N)
  • Integrity (I): Low (L)
  • Availability (A): High (H)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): High (H)
  • Modified Privileges Required (MPR): None (N)
  • Modified User Interaction (MUI): None (N)
  • Modified Confidentiality (MC): None (N)
  • Modified Scope (MS): Unchanged (U)
  • Modified Integrity (MI): Low (L)
  • Modified Availability (MA): High (H)
updated 1 day, 20 hours ago by @LeSuisse Activity log
  • Created suggestion
  • @LeSuisse accepted
  • @LeSuisse published on GitHub
Kronosnet: kronosnet: memory corruption and out-of-bounds access via malformed network packet defragmentation

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

Affected products

rhcos
kronosnet

Matching in nixpkgs

pkgs.kronosnet

VPN on steroids

  • nixos-unstable 1.33
    • nixpkgs-unstable 1.33
    • nixos-unstable-small 1.33
  • nixos-26.05 1.33
    • nixos-26.05-small 1.33
    • nixpkgs-26.05-darwin 1.33

Package maintainers

Fix in 1.35 https://github.com/kronosnet/kronosnet/releases/tag/v1.35