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.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
1e4ee5135d814fe4785890790cec81c3132888fb affected < f21c343ec7419377bff89ab11146c03ae117036f
1e4ee5135d814fe4785890790cec81c3132888fb affected < 102331b66bcaf1f41f50b9c4cd5c36e46bafa9f3
Linux Linux affected
Version Status Constraints
6.19 affected —
0 unaffected < 6.19
7.0.10 unaffected ≤ 7.0.*
7.1 unaffected ≤ *

No data.

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Fixes

Solution

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References
Link Providers
https://git.kernel.org/stable/c/102331b66bcaf1f41f50b9c4cd5c36e46bafa9f3 cve-icon
https://git.kernel.org/stable/c/f21c343ec7419377bff89ab11146c03ae117036f cve-icon
History

Wed, 24 Jun 2026 17:15:00 +0000

Type Values Removed Values Added
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.
Title um: Fix potential race condition in TLB sync
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-06-24T16:29:29.796Z

Reserved: 2026-06-09T07:44:35.379Z

Link: CVE-2026-53020

cve-icon Vulnrichment

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cve-icon NVD

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cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses

No weakness.