Use-after-free in Linux kernel - CVE-2026-98017
Published: September 28, 2026
Vulnerability identifier: #VU152451
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-98017
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause memory corruption.
The vulnerability exists due to a use-after-free in the Linux kernel traffic-control queueing discipline creation path when processing an RTM_NEWQDISC request with an invalid TCA_RATE attribute after binding a populated shared ingress block. A local user can send a crafted RTM_NEWQDISC request to cause memory corruption.
Affected software
Linux kernel
How to mitigate CVE-2026-98017
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3