Answer in brief
CVE-2024-47748 records a High severity (CVSS 7.8) vulnerability in vhost_vdpa: assign irq bypass producer token correctly. 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 | >=2cf1ba9a4d15cb78b96ea97f727b93382c3f9a60 <0c170b1e918b9afac25e2bbd01eaa2bfc0ece8c0 || >=2cf1ba9a4d15cb78b96ea97f727b93382c3f9a60 <927a2580208e0f9b0b47b08f1c802b7233a7ba3c || >=2cf1ba9a4d15cb78b96ea97f727b93382c3f9a60 <ec5f1b54ceb23475049ada6e7a43452cf4df88d1 || >=2cf1ba9a4d15cb78b96ea97f727b93382c3f9a60 <ca64edd7ae93402af2596a952e0d94d545e2b9c0 || >=2cf1ba9a4d15cb78b96ea97f727b93382c3f9a60 <fae9b1776f53aab93ab345bdbf653b991aed717d || >=2cf1ba9a4d15cb78b96ea97f727b93382c3f9a60 <7cf2fb51175cafe01df8c43fa15a06194a59c6e2 || >=2cf1ba9a4d15cb78b96ea97f727b93382c3f9a60 <02e9e9366fefe461719da5d173385b6685f70319 | 0c170b1e918b9afac25e2bbd01eaa2bfc0ece8c0, 927a2580208e0f9b0b47b08f1c802b7233a7ba3c, ec5f1b54ceb23475049ada6e7a43452cf4df88d1, ca64edd7ae93402af2596a952e0d94d545e2b9c0, fae9b1776f53aab93ab345bdbf653b991aed717d, 7cf2fb51175cafe01df8c43fa15a06194a59c6e2, 02e9e9366fefe461719da5d173385b6685f70319 |
| Linux/Linuxgeneric | 5.9 | Not reported |
Published upstream
Oct 21, 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: vhost_vdpa: assign irq bypass producer token correctly We used to call irq_bypass_unregister_producer() in vhost_vdpa_setup_vq_irq() which is problematic as we don't know if the token pointer is still valid or not. Actually, we use the eventfd_ctx as the token so the life cycle of the token should be bound to the VHOST_SET_VRING_CALL instead of vhost_vdpa_setup_vq_irq() which could be called by set_status(). Fixing this by setting up irq bypass producer's token when handling VHOST_SET_VRING_CALL and un-registering the producer before calling vhost_vring_ioctl() to prevent a possible use after free as eventfd could have been released in vhost_vring_ioctl(). And such registering and unregistering will only be done if DRIVER_OK is set.
Quoted source text, attributed separately from HOL analysis.