Missing Release of Resource after Effective Lifetime in Linux kernel - CVE-2026-98131
Published: September 28, 2026
Vulnerability identifier: #VU152315
CSH Severity: Low
CVSS v4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-98131
CWE-ID: CWE-772
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause DMA mapping leaks.
The vulnerability exists due to failure to release DMA mappings in stmmac_tso_xmit() in the stmmac Ethernet driver when a DMA mapping of an skb fragment fails during transmission. A local user can transmit a fragmented skb to cause DMA mapping leaks.
Affected software
Linux kernel
How to mitigate CVE-2026-98131
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3