Answer in brief
CVE-2026-93239 records a Unknown severity vulnerability in arm64: mm: Fix the lockless page-table walk in show_pte(). 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.
A CVSS score is not reported in the current record. 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 | >=1d18c47c735e8adfe531fc41fae31e98f86b68fe <08d931a0a850ad16a64f2cd23a19f40795cdbdf7 || >=1d18c47c735e8adfe531fc41fae31e98f86b68fe <b28fe65a36b8209b6adcf2722c7ce974cf9ac8d1 || >=1d18c47c735e8adfe531fc41fae31e98f86b68fe <68cbd70795dd8c06e7ccdc4eb0b74c5b180076c3 || >=1d18c47c735e8adfe531fc41fae31e98f86b68fe <0f05d95b99164a9ccc4cf4a4920e0ff0228138ad || >=1d18c47c735e8adfe531fc41fae31e98f86b68fe <a77644d009dece1104b6fcc6e322b0e4503db0d6 | 08d931a0a850ad16a64f2cd23a19f40795cdbdf7, b28fe65a36b8209b6adcf2722c7ce974cf9ac8d1, 68cbd70795dd8c06e7ccdc4eb0b74c5b180076c3, 0f05d95b99164a9ccc4cf4a4920e0ff0228138ad, a77644d009dece1104b6fcc6e322b0e4503db0d6 |
| Linux/Linuxgeneric | 3.7 | Not reported |
Published upstream
Sep 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 25, 2026
In the Linux kernel, the following vulnerability has been resolved: arm64: mm: Fix the lockless page-table walk in show_pte() show_pte() walks page tables locklessly and can run with interrupts enabled. A concurrent teardown can free a table page while it is being walked. It can also clear a parent entry after show_pte() checked it; the regular pXd_offset() helpers then reread the cleared entry and can derive a bogus lower-level pointer and fault again. Use the lockless offset helpers with the saved parent entries, as gup_fast() does, and pass the saved PMD to pte_offset_map(). For task page tables, arm64 selects MMU_GATHER_RCU_TABLE_FREE. Disable local interrupts around the walk to hold off RCU-deferred table frees and block the tlb_remove_table_sync_one() IPI until the walk is finished. Place the IRQ guard after the header print. This does not make the output a consistent snapshot, but prevents the task page-table walk from dereferencing a released table page or deriving a pointer from a different parent value.
Quoted source text, attributed separately from HOL analysis.