Answer in brief
CVE-2026-53020 records a High severity (CVSS 7.8) vulnerability in um: Fix potential race condition in TLB sync. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=1e4ee5135d814fe4785890790cec81c3132888fb <f21c343ec7419377bff89ab11146c03ae117036f || >=1e4ee5135d814fe4785890790cec81c3132888fb <102331b66bcaf1f41f50b9c4cd5c36e46bafa9f3 | f21c343ec7419377bff89ab11146c03ae117036f, 102331b66bcaf1f41f50b9c4cd5c36e46bafa9f3 |
| Linux/Linuxgeneric | 6.19 | Not reported |
Published upstream
Jun 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 24, 2026
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.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-53020 records a High severity (CVSS 7.8) vulnerability in um: Fix potential race condition in TLB sync. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=1e4ee5135d814fe4785890790cec81c3132888fb <f21c343ec7419377bff89ab11146c03ae117036f || >=1e4ee5135d814fe4785890790cec81c3132888fb <102331b66bcaf1f41f50b9c4cd5c36e46bafa9f3 | f21c343ec7419377bff89ab11146c03ae117036f, 102331b66bcaf1f41f50b9c4cd5c36e46bafa9f3 |
| Linux/Linuxgeneric | 6.19 | Not reported |
Published upstream
Jun 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 24, 2026
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.
Quoted source text, attributed separately from HOL analysis.