Answer in brief
CVE-2026-64226 records a Unknown severity vulnerability in sched_ext: Avoid UAF in scx_root_enable_workfn() init failure path. 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 | >=f0e1a0643a59bf1f922fa209cec86a170b784f3f <cf396941901858b0de426cdcd3974eea6a02c98c || >=f0e1a0643a59bf1f922fa209cec86a170b784f3f <45c7c4e3db8b700307313c035ea08be829a7f21b || >=f0e1a0643a59bf1f922fa209cec86a170b784f3f <57e19ba3f58a67eb924022a5a60b67fd08e5cbbd || >=f0e1a0643a59bf1f922fa209cec86a170b784f3f <9a415cc53711f2238e0f0ca8a6bcc796c003b127 | cf396941901858b0de426cdcd3974eea6a02c98c, 45c7c4e3db8b700307313c035ea08be829a7f21b, 57e19ba3f58a67eb924022a5a60b67fd08e5cbbd, 9a415cc53711f2238e0f0ca8a6bcc796c003b127 |
| Linux/Linuxgeneric | 6.12 | Not reported |
Published upstream
Jul 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
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: sched_ext: Avoid UAF in scx_root_enable_workfn() init failure path In scx_root_enable_workfn(), put_task_struct(p) is called before scx_error() dereferences p->comm and p->pid. If the iterator's reference is the last drop, the task is freed synchronously and the deref becomes a UAF. Move put_task_struct() past scx_error().
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-64226 records a Unknown severity vulnerability in sched_ext: Avoid UAF in scx_root_enable_workfn() init failure path. 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 | >=f0e1a0643a59bf1f922fa209cec86a170b784f3f <cf396941901858b0de426cdcd3974eea6a02c98c || >=f0e1a0643a59bf1f922fa209cec86a170b784f3f <45c7c4e3db8b700307313c035ea08be829a7f21b || >=f0e1a0643a59bf1f922fa209cec86a170b784f3f <57e19ba3f58a67eb924022a5a60b67fd08e5cbbd || >=f0e1a0643a59bf1f922fa209cec86a170b784f3f <9a415cc53711f2238e0f0ca8a6bcc796c003b127 | cf396941901858b0de426cdcd3974eea6a02c98c, 45c7c4e3db8b700307313c035ea08be829a7f21b, 57e19ba3f58a67eb924022a5a60b67fd08e5cbbd, 9a415cc53711f2238e0f0ca8a6bcc796c003b127 |
| Linux/Linuxgeneric | 6.12 | Not reported |
Published upstream
Jul 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
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: sched_ext: Avoid UAF in scx_root_enable_workfn() init failure path In scx_root_enable_workfn(), put_task_struct(p) is called before scx_error() dereferences p->comm and p->pid. If the iterator's reference is the last drop, the task is freed synchronously and the deref becomes a UAF. Move put_task_struct() past scx_error().
Quoted source text, attributed separately from HOL analysis.