Answer in brief
CVE-2024-35880 records a Unknown severity vulnerability in io_uring/kbuf: hold io_buffer_list reference over mmap. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), linux/linux_kernel (generic), linux/linux_kernel (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), linux/linux_kernel (generic), linux/linux_kernel (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=09f7520048eaaee9709091cd2787966f807da7c5 <65938e81df2197203bda4b9a0c477e7987218d66 || >=5cf4f52e6d8aa2d3b7728f568abbf9d42a3af252 <5fd8e2359498043e0b5329a05f02d10a9eb91eb9 || >=5cf4f52e6d8aa2d3b7728f568abbf9d42a3af252 <561e4f9451d65fc2f7eef564e0064373e3019793 || >=6.6.5 <6.6.26 | 65938e81df2197203bda4b9a0c477e7987218d66, 5fd8e2359498043e0b5329a05f02d10a9eb91eb9, 561e4f9451d65fc2f7eef564e0064373e3019793, 6.6.26 |
| Linux/Linuxgeneric | 6.7 | Not reported |
| linux/linux_kernelgeneric | 6.7 | Not reported |
| linux/linux_kernelgeneric | >=09f7520048ea <65938e81df21 || >=5cf4f52e6d8a <5fd8e2359498 || >=5cf4f52e6d8a <561e4f9451d6 | 65938e81df21, 5fd8e2359498, 561e4f9451d6 |
Published upstream
May 19, 2024
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: io_uring/kbuf: hold io_buffer_list reference over mmap If we look up the kbuf, ensure that it doesn't get unregistered until after we're done with it. Since we're inside mmap, we cannot safely use the io_uring lock. Rely on the fact that we can lookup the buffer list under RCU now and grab a reference to it, preventing it from being unregistered until we're done with it. The lookup returns the io_buffer_list directly with it referenced.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2024-35880 records a Unknown severity vulnerability in io_uring/kbuf: hold io_buffer_list reference over mmap. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), linux/linux_kernel (generic), linux/linux_kernel (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), linux/linux_kernel (generic), linux/linux_kernel (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=09f7520048eaaee9709091cd2787966f807da7c5 <65938e81df2197203bda4b9a0c477e7987218d66 || >=5cf4f52e6d8aa2d3b7728f568abbf9d42a3af252 <5fd8e2359498043e0b5329a05f02d10a9eb91eb9 || >=5cf4f52e6d8aa2d3b7728f568abbf9d42a3af252 <561e4f9451d65fc2f7eef564e0064373e3019793 || >=6.6.5 <6.6.26 | 65938e81df2197203bda4b9a0c477e7987218d66, 5fd8e2359498043e0b5329a05f02d10a9eb91eb9, 561e4f9451d65fc2f7eef564e0064373e3019793, 6.6.26 |
| Linux/Linuxgeneric | 6.7 | Not reported |
| linux/linux_kernelgeneric | 6.7 | Not reported |
| linux/linux_kernelgeneric | >=09f7520048ea <65938e81df21 || >=5cf4f52e6d8a <5fd8e2359498 || >=5cf4f52e6d8a <561e4f9451d6 | 65938e81df21, 5fd8e2359498, 561e4f9451d6 |
Published upstream
May 19, 2024
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: io_uring/kbuf: hold io_buffer_list reference over mmap If we look up the kbuf, ensure that it doesn't get unregistered until after we're done with it. Since we're inside mmap, we cannot safely use the io_uring lock. Rely on the fact that we can lookup the buffer list under RCU now and grab a reference to it, preventing it from being unregistered until we're done with it. The lookup returns the io_buffer_list directly with it referenced.
Quoted source text, attributed separately from HOL analysis.