CVE-2024-47748vhost_vdpa: assign irq bypass producer token correctly
- 7.8HighCVSS base score
- 0.21%Exploitation in 30 daysEPSS · top 88% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Linux
- 21 days later
· 21 days later
Published
- 22 months later
· 22 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.21% · top 88% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected 2cf1ba9a4d15cb78b96ea97f727b93382c3f9a60 – < 0c170b1e918b9afac25e2bbd01eaa2bfc0ece8c0
- affected 2cf1ba9a4d15cb78b96ea97f727b93382c3f9a60 – < 927a2580208e0f9b0b47b08f1c802b7233a7ba3c
- affected 2cf1ba9a4d15cb78b96ea97f727b93382c3f9a60 – < ec5f1b54ceb23475049ada6e7a43452cf4df88d1
- affected 2cf1ba9a4d15cb78b96ea97f727b93382c3f9a60 – < ca64edd7ae93402af2596a952e0d94d545e2b9c0
- affected 2cf1ba9a4d15cb78b96ea97f727b93382c3f9a60 – < fae9b1776f53aab93ab345bdbf653b991aed717d
- affected 2cf1ba9a4d15cb78b96ea97f727b93382c3f9a60 – < 7cf2fb51175cafe01df8c43fa15a06194a59c6e2
- affected 2cf1ba9a4d15cb78b96ea97f727b93382c3f9a60 – < 02e9e9366fefe461719da5d173385b6685f70319
- affected 5.9
- unaffected < 5.9
- unaffected 5.10.227 – ≤ 5.10.*
- unaffected 5.15.168 – ≤ 5.15.*
- unaffected 6.1.113 – ≤ 6.1.*
- unaffected 6.6.54 – ≤ 6.6.*
- unaffected 6.10.13 – ≤ 6.10.*
- unaffected 6.11.2 – ≤ 6.11.*
- unaffected 6.12 – ≤ *
References
References9
- https://git.kernel.org/stable/c/0c170b1e918b9afac25e2bbd01eaa2bfc0ece8c0 (opens in a new tab)
- https://git.kernel.org/stable/c/927a2580208e0f9b0b47b08f1c802b7233a7ba3c (opens in a new tab)
- https://git.kernel.org/stable/c/ec5f1b54ceb23475049ada6e7a43452cf4df88d1 (opens in a new tab)
- https://git.kernel.org/stable/c/ca64edd7ae93402af2596a952e0d94d545e2b9c0 (opens in a new tab)
- https://git.kernel.org/stable/c/fae9b1776f53aab93ab345bdbf653b991aed717d (opens in a new tab)
- https://git.kernel.org/stable/c/7cf2fb51175cafe01df8c43fa15a06194a59c6e2 (opens in a new tab)
- https://git.kernel.org/stable/c/02e9e9366fefe461719da5d173385b6685f70319 (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2024-42664 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2024-47748)Record last updated .