Answer in brief
CVE-2025-39951 records a Unknown severity vulnerability in um: virtio_uml: Fix use-after-free after put_device in probe. 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-2025-39951 records a Unknown severity vulnerability in um: virtio_uml: Fix use-after-free after put_device in probe. 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 | >=04e5b1fb01834a602acaae2276b67a783a8c6159 <14c231959a16ca41bfdcaede72483362a8c645d7 || >=04e5b1fb01834a602acaae2276b67a783a8c6159 <5e94e44c9cb30d7a383d8ac227f24a8c9326b770 || >=04e5b1fb01834a602acaae2276b67a783a8c6159 <aaf900a83508c8cd5cdf765e7749f9076196ec7f || >=04e5b1fb01834a602acaae2276b67a783a8c6159 <4f364023ddcfe83f7073b973a9cb98584b7f2a46 || >=04e5b1fb01834a602acaae2276b67a783a8c6159 <00e98b5a69034b251bb36dc6e7123d7648e218e4 || >=04e5b1fb01834a602acaae2276b67a783a8c6159 <c2ff91255e0157b356cff115d8dc3eeb5162edf2 || >=04e5b1fb01834a602acaae2276b67a783a8c6159 <7ebf70cf181651fe3f2e44e95e7e5073d594c9c0 | 14c231959a16ca41bfdcaede72483362a8c645d7, 5e94e44c9cb30d7a383d8ac227f24a8c9326b770, aaf900a83508c8cd5cdf765e7749f9076196ec7f, 4f364023ddcfe83f7073b973a9cb98584b7f2a46, 00e98b5a69034b251bb36dc6e7123d7648e218e4, c2ff91255e0157b356cff115d8dc3eeb5162edf2, 7ebf70cf181651fe3f2e44e95e7e5073d594c9c0 |
| Linux/Linuxgeneric | 5.5 | Not reported |
Published upstream
Oct 4, 2025
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: um: virtio_uml: Fix use-after-free after put_device in probe When register_virtio_device() fails in virtio_uml_probe(), the code sets vu_dev->registered = 1 even though the device was not successfully registered. This can lead to use-after-free or other issues.
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 | >=04e5b1fb01834a602acaae2276b67a783a8c6159 <14c231959a16ca41bfdcaede72483362a8c645d7 || >=04e5b1fb01834a602acaae2276b67a783a8c6159 <5e94e44c9cb30d7a383d8ac227f24a8c9326b770 || >=04e5b1fb01834a602acaae2276b67a783a8c6159 <aaf900a83508c8cd5cdf765e7749f9076196ec7f || >=04e5b1fb01834a602acaae2276b67a783a8c6159 <4f364023ddcfe83f7073b973a9cb98584b7f2a46 || >=04e5b1fb01834a602acaae2276b67a783a8c6159 <00e98b5a69034b251bb36dc6e7123d7648e218e4 || >=04e5b1fb01834a602acaae2276b67a783a8c6159 <c2ff91255e0157b356cff115d8dc3eeb5162edf2 || >=04e5b1fb01834a602acaae2276b67a783a8c6159 <7ebf70cf181651fe3f2e44e95e7e5073d594c9c0 | 14c231959a16ca41bfdcaede72483362a8c645d7, 5e94e44c9cb30d7a383d8ac227f24a8c9326b770, aaf900a83508c8cd5cdf765e7749f9076196ec7f, 4f364023ddcfe83f7073b973a9cb98584b7f2a46, 00e98b5a69034b251bb36dc6e7123d7648e218e4, c2ff91255e0157b356cff115d8dc3eeb5162edf2, 7ebf70cf181651fe3f2e44e95e7e5073d594c9c0 |
| Linux/Linuxgeneric | 5.5 | Not reported |
Published upstream
Oct 4, 2025
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: um: virtio_uml: Fix use-after-free after put_device in probe When register_virtio_device() fails in virtio_uml_probe(), the code sets vu_dev->registered = 1 even though the device was not successfully registered. This can lead to use-after-free or other issues.
Quoted source text, attributed separately from HOL analysis.