Answer in brief
CVE-2026-46065 records a High severity (CVSS 7.8) vulnerability in fbdev: defio: Disconnect deferred I/O from the lifetime of struct fb_info. 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-2026-46065 records a High severity (CVSS 7.8) vulnerability in fbdev: defio: Disconnect deferred I/O from the lifetime of struct fb_info. 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 | >=60b59beafba875aef6d378078bce0baf2287ae14 <4aab89603b637a2e441b38808c4f6fe7d1184df6 || >=60b59beafba875aef6d378078bce0baf2287ae14 <4fda0d6b45faad44926dd3e4f55f118d899b2e27 || >=60b59beafba875aef6d378078bce0baf2287ae14 <2a40f8bc9bb713329f1c35ffc199ee961a7135b0 || >=60b59beafba875aef6d378078bce0baf2287ae14 <2b53d3a52e8e5403a4f4fb57ac6cad3fd2cb1066 || >=60b59beafba875aef6d378078bce0baf2287ae14 <25c2b77bc463f29ee71a54b883548baf9386a0db || >=60b59beafba875aef6d378078bce0baf2287ae14 <a0aafb421dd15e935d81543152617f2742cefa70 || >=60b59beafba875aef6d378078bce0baf2287ae14 <9ded47ad003f09a94b6a710b5c47f4aa5ceb7429 | 4aab89603b637a2e441b38808c4f6fe7d1184df6, 4fda0d6b45faad44926dd3e4f55f118d899b2e27, 2a40f8bc9bb713329f1c35ffc199ee961a7135b0, 2b53d3a52e8e5403a4f4fb57ac6cad3fd2cb1066, 25c2b77bc463f29ee71a54b883548baf9386a0db, a0aafb421dd15e935d81543152617f2742cefa70, 9ded47ad003f09a94b6a710b5c47f4aa5ceb7429 |
| Linux/Linuxgeneric | 2.6.22 | Not reported |
Published upstream
May 27, 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 19, 2026
In the Linux kernel, the following vulnerability has been resolved: fbdev: defio: Disconnect deferred I/O from the lifetime of struct fb_info Hold state of deferred I/O in struct fb_deferred_io_state. Allocate an instance as part of initializing deferred I/O and remove it only after the final mapping has been closed. If the fb_info and the contained deferred I/O meanwhile goes away, clear struct fb_deferred_io_state.info to invalidate the mapping. Any access will then result in a SIGBUS signal. Fixes a long-standing problem, where a device hot-unplug happens while user space still has an active mapping of the graphics memory. The hot- unplug frees the instance of struct fb_info. Accessing the memory will operate on undefined state.
Quoted source text, attributed separately from HOL analysis.
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 | >=60b59beafba875aef6d378078bce0baf2287ae14 <4aab89603b637a2e441b38808c4f6fe7d1184df6 || >=60b59beafba875aef6d378078bce0baf2287ae14 <4fda0d6b45faad44926dd3e4f55f118d899b2e27 || >=60b59beafba875aef6d378078bce0baf2287ae14 <2a40f8bc9bb713329f1c35ffc199ee961a7135b0 || >=60b59beafba875aef6d378078bce0baf2287ae14 <2b53d3a52e8e5403a4f4fb57ac6cad3fd2cb1066 || >=60b59beafba875aef6d378078bce0baf2287ae14 <25c2b77bc463f29ee71a54b883548baf9386a0db || >=60b59beafba875aef6d378078bce0baf2287ae14 <a0aafb421dd15e935d81543152617f2742cefa70 || >=60b59beafba875aef6d378078bce0baf2287ae14 <9ded47ad003f09a94b6a710b5c47f4aa5ceb7429 | 4aab89603b637a2e441b38808c4f6fe7d1184df6, 4fda0d6b45faad44926dd3e4f55f118d899b2e27, 2a40f8bc9bb713329f1c35ffc199ee961a7135b0, 2b53d3a52e8e5403a4f4fb57ac6cad3fd2cb1066, 25c2b77bc463f29ee71a54b883548baf9386a0db, a0aafb421dd15e935d81543152617f2742cefa70, 9ded47ad003f09a94b6a710b5c47f4aa5ceb7429 |
| Linux/Linuxgeneric | 2.6.22 | Not reported |
Published upstream
May 27, 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 19, 2026
In the Linux kernel, the following vulnerability has been resolved: fbdev: defio: Disconnect deferred I/O from the lifetime of struct fb_info Hold state of deferred I/O in struct fb_deferred_io_state. Allocate an instance as part of initializing deferred I/O and remove it only after the final mapping has been closed. If the fb_info and the contained deferred I/O meanwhile goes away, clear struct fb_deferred_io_state.info to invalidate the mapping. Any access will then result in a SIGBUS signal. Fixes a long-standing problem, where a device hot-unplug happens while user space still has an active mapping of the graphics memory. The hot- unplug frees the instance of struct fb_info. Accessing the memory will operate on undefined state.
Quoted source text, attributed separately from HOL analysis.