Answer in brief
CVE-2026-64266 records a Unknown severity vulnerability in fuse: re-lock request before returning from fuse_ref_folio(). 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.
Answer in brief
CVE-2026-64266 records a Unknown severity vulnerability in fuse: re-lock request before returning from fuse_ref_folio(). 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 | >=c3021629a0d820247ee12b6c5192a1d5380e21c6 <1f9156714592356b4fda57beac7eab9c2a462dd3 || >=c3021629a0d820247ee12b6c5192a1d5380e21c6 <5630da218a45ba80f0aba0846cbe8aa655da122b || >=c3021629a0d820247ee12b6c5192a1d5380e21c6 <1ca605cfa59377f0143fb35b5b01360f37d1b7c4 || >=c3021629a0d820247ee12b6c5192a1d5380e21c6 <0e4a5a000123d81234e27a2f8187688cf608f755 || >=c3021629a0d820247ee12b6c5192a1d5380e21c6 <e6aa539720c3d8def69683ed0c07cf9faea4e8be || >=c3021629a0d820247ee12b6c5192a1d5380e21c6 <be353caffa8640f5e25fb3714ce8b0cef5e410e5 || >=c3021629a0d820247ee12b6c5192a1d5380e21c6 <65a1c2551f7e16085acbb54aedde1feaa559ba7a || >=c3021629a0d820247ee12b6c5192a1d5380e21c6 <b5befa80fdbe287a98480effed9564712924add5 | 1f9156714592356b4fda57beac7eab9c2a462dd3, 5630da218a45ba80f0aba0846cbe8aa655da122b, 1ca605cfa59377f0143fb35b5b01360f37d1b7c4, 0e4a5a000123d81234e27a2f8187688cf608f755, e6aa539720c3d8def69683ed0c07cf9faea4e8be, be353caffa8640f5e25fb3714ce8b0cef5e410e5, 65a1c2551f7e16085acbb54aedde1feaa559ba7a, b5befa80fdbe287a98480effed9564712924add5 |
| Linux/Linuxgeneric | 2.6.35 | Not reported |
Published upstream
Jul 25, 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: fuse: re-lock request before returning from fuse_ref_folio() fuse_ref_folio() unlocks the request but does not re-lock it before returning. fuse_chan_abort() can end the request and the async end callback (eg fuse_writepage_free()) can free the args while the subsequent copy chain logic after fuse_ref_folio() accesses them, leading to use-after-free issues. Fix this by locking the request in fuse_ref_folio() before returning.
Quoted source text, attributed separately from HOL analysis.
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 | >=c3021629a0d820247ee12b6c5192a1d5380e21c6 <1f9156714592356b4fda57beac7eab9c2a462dd3 || >=c3021629a0d820247ee12b6c5192a1d5380e21c6 <5630da218a45ba80f0aba0846cbe8aa655da122b || >=c3021629a0d820247ee12b6c5192a1d5380e21c6 <1ca605cfa59377f0143fb35b5b01360f37d1b7c4 || >=c3021629a0d820247ee12b6c5192a1d5380e21c6 <0e4a5a000123d81234e27a2f8187688cf608f755 || >=c3021629a0d820247ee12b6c5192a1d5380e21c6 <e6aa539720c3d8def69683ed0c07cf9faea4e8be || >=c3021629a0d820247ee12b6c5192a1d5380e21c6 <be353caffa8640f5e25fb3714ce8b0cef5e410e5 || >=c3021629a0d820247ee12b6c5192a1d5380e21c6 <65a1c2551f7e16085acbb54aedde1feaa559ba7a || >=c3021629a0d820247ee12b6c5192a1d5380e21c6 <b5befa80fdbe287a98480effed9564712924add5 | 1f9156714592356b4fda57beac7eab9c2a462dd3, 5630da218a45ba80f0aba0846cbe8aa655da122b, 1ca605cfa59377f0143fb35b5b01360f37d1b7c4, 0e4a5a000123d81234e27a2f8187688cf608f755, e6aa539720c3d8def69683ed0c07cf9faea4e8be, be353caffa8640f5e25fb3714ce8b0cef5e410e5, 65a1c2551f7e16085acbb54aedde1feaa559ba7a, b5befa80fdbe287a98480effed9564712924add5 |
| Linux/Linuxgeneric | 2.6.35 | Not reported |
Published upstream
Jul 25, 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: fuse: re-lock request before returning from fuse_ref_folio() fuse_ref_folio() unlocks the request but does not re-lock it before returning. fuse_chan_abort() can end the request and the async end callback (eg fuse_writepage_free()) can free the args while the subsequent copy chain logic after fuse_ref_folio() accesses them, leading to use-after-free issues. Fix this by locking the request in fuse_ref_folio() before returning.
Quoted source text, attributed separately from HOL analysis.