CVE-2026-53020
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.
Affected versions
Linux kernel versions
6.19
and later are affected. Fixed in
7.0.10,
7.1
and their respective stable series.
References
2 totalFrequently asked questions
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What is CVE-2026-53020?
CVE-2026-53020 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.19 onward and has been patched in 7.0.10 and 7.1. CVE-2026-53020 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-53020?
Yes — CVE-2026-53020 has been patched. Fixed versions include 7.0.10 and 7.1. If you are running Linux kernel 6.19 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-53020 actively exploited?
No — CVE-2026-53020 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.