CVE-2025-40160
- Source
- https://cve.org/CVERecord?id=CVE-2025-40160
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-40160.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2025-40160
- Downstream
- Related
- Published
- 2025-11-12T10:24:36.429Z
- Modified
- 2026-03-12T03:54:34.860767Z
- Summary
- xen/events: Return -EEXIST for bound VIRQs
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
xen/events: Return -EEXIST for bound VIRQs
Change findvirq() to return -EEXIST when a VIRQ is bound to a different CPU than the one passed in. With that, remove the BUGON() from bindvirqto_irq() to propogate the error upwards.
Some VIRQs are per-cpu, but others are per-domain or global. Those must be bound to CPU0 and can then migrate elsewhere. The lookup for per-domain and global will probably fail when migrated off CPU 0, especially when the current CPU is tracked. This now returns -EEXIST instead of BUG_ON().
A second call to bind a per-domain or global VIRQ is not expected, but make it non-fatal to avoid trying to look up the irq, since we don't know which percpu(virqto_irq) it will be in.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40160.json" }- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/07ce121d93a5e5fb2440a24da3dbf408fcee978e
- https://git.kernel.org/stable/c/612ef6056855c0aacb9b25d1d853c435754483f7
- https://git.kernel.org/stable/c/a1e7f07ae6b594f1ba5be46c6125b43bc505c5aa
- https://git.kernel.org/stable/c/f81db055a793eca9d05f79658ff62adafb41d664
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40160.json
- https://nvd.nist.gov/vuln/detail/CVE-2025-40160
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced62cc5fc7b2e0218144e162afb8191db9b924b5e6Fixed612ef6056855c0aacb9b25d1d853c435754483f7Fixeda1e7f07ae6b594f1ba5be46c6125b43bc505c5aaFixedf81db055a793eca9d05f79658ff62adafb41d664Fixed07ce121d93a5e5fb2440a24da3dbf408fcee978e