Allocation of Resources Without Limits or Throttling in Linux kernel - CVE-2026-97939
Published: September 28, 2026
Vulnerability identifier: #VU152530
CSH Severity: Low
CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-97939
CWE-ID: CWE-770
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local privileged user to cause a denial of service.
The vulnerability exists due to missing memory accounting in IPv4 and IPv6 multicast routing table allocations when creating multicast routing tables with MRT_TABLE or MRT6_TABLE. A local privileged user can create many multicast routing tables to cause a denial of service.
Exploitation requires netadmin privileges in a user and network namespace.
Affected software
Linux kernel
How to mitigate CVE-2026-97939
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3