Memory leak in Linux kernel - CVE-2026-23453
Published: April 6, 2026
Vulnerability identifier: #VU124917
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-2026-23453
CWE-ID: CWE-401
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local attacker to cause a denial of service.
The vulnerability exists due to a memory leak in emac_run_xdp() when processing dropped packets in non-zero-copy mode. A local attacker can trigger XDP_DROP in standard page pool mode to cause a denial of service.
This issue affects the icssg-prueth driver and can lead to out-of-memory conditions because pages are not returned to the page pool.
Affected software
Linux kernel
How to mitigate CVE-2026-23453
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3