CVE-2024-27067xen/evtchn: avoid WARN() when unbinding an event channel
- 5.5MediumCVSS base score
- 0.22%Exploitation in 30 daysEPSS · top 87% 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: xen/evtchn: avoid WARN() when unbinding an event channel When unbinding a user event channel, the related handler might be called a last time in case the kernel was built with CONFIG_DEBUG_SHIRQ. This might cause a WARN() in the handler. Avoid that by adding an "unbinding" flag to struct user_event which will short circuit the handler.
Timeline
ID reserved
By Linux
- 2 months later
· 2 months later
Published
- 2 years later
· 2 years 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 |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.22% · top 87% 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: Medium 5.5.
Affected products
- affected 3c8f5965a99397368d3762a9814a21a3e442e1a4 – < 99e425032c6ec13584d3cd33846e0c7307501b47
- affected 9e90e58c11b74c2bddac4b2702cf79d36b981278 – < 35485dad6e28f9b17884764d4692b1655cb848d0
- affected 9e90e58c11b74c2bddac4b2702cf79d36b981278 – < 9e2d4b58c1da48a32905802aaeadba7084b46895
- affected 9e90e58c11b74c2bddac4b2702cf79d36b981278 – < 51c23bd691c0f1fb95b29731c356c6fd69925d17
- affected 6.6.19 – < 6.6.23
- affected 6.7
- unaffected < 6.7
- unaffected 6.6.23 – ≤ 6.6.*
- unaffected 6.7.11 – ≤ 6.7.*
- unaffected 6.8.2 – ≤ 6.8.*
- unaffected 6.9 – ≤ *
References
References4
- https://git.kernel.org/stable/c/99e425032c6ec13584d3cd33846e0c7307501b47 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/35485dad6e28f9b17884764d4692b1655cb848d0 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/9e2d4b58c1da48a32905802aaeadba7084b46895 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/51c23bd691c0f1fb95b29731c356c6fd69925d17 (opens in a new tab)x_transferred
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-2024-24329 (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-2024-27067)Record last updated .