Resource exhaustion in Linux kernel - CVE-2026-98010
Published: September 28, 2026
Vulnerability identifier: #VU152461
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-98010
CWE-ID: CWE-400
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper validation of DRR quantum values in drr_change_class() when configuring DRR qdisc classes with a low quantum value. A local user can configure a DRR qdisc class with the quantum set to 1 to cause a denial of service.
Exploitation requires CONFIG_NET_SCH_DRR=y and CAP_NET_ADMIN; the capability can be namespace-local through unshare -Urn.
Affected software
Linux kernel
How to mitigate CVE-2026-98010
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3