CVE-2026-53020

HIGH

um: Fix potential race condition in TLB sync

Title source: cna
STIX 2.1

Description

In the Linux kernel, the following vulnerability has been resolved: um: Fix potential race condition in TLB sync During the TLB sync, we need to traverse and modify the page table, so we should hold the page table lock. Since full SMP support for threads within the same process is still missing, let's disable the split page table lock for simplicity.

Scores

CVSS v3 7.8
EPSS 0.0012
EPSS Percentile 2.2%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

Status published
Products (7)
linux/Kernel 6.19.0 - 7.0.10linux
Linux/Linux < 6.19
Linux/Linux 1e4ee5135d814fe4785890790cec81c3132888fb - 102331b66bcaf1f41f50b9c4cd5c36e46bafa9f3
Linux/Linux 1e4ee5135d814fe4785890790cec81c3132888fb - f21c343ec7419377bff89ab11146c03ae117036f
Linux/Linux 6.19
Linux/Linux 7.0.10 - 7.0.*
Linux/Linux 7.1
Published Jun 24, 2026
Tracked Since Jun 24, 2026