The (1) do_send and (2) do_recv functions in io.c in libvchan in Xen 4.2.x, 4.3.x, and 4.4-RC series allows local guests to cause a denial of service or possibly gain privileges via crafted xenstore ring indexes, which triggers a "read or write past the end of the ring."
2014-04-01T06:35:53.607
2025-04-12T10:46:40.837
Deferred
CVSSv2: 4.9 (MEDIUM)
AV:A/AC:M/Au:S/C:P/I:P/A:P
4.4
6.4
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | xen | xen | 4.2.0 | Yes |
| Operating System | xen | xen | 4.2.1 | Yes |
| Operating System | xen | xen | 4.2.2 | Yes |
| Operating System | xen | xen | 4.2.3 | Yes |
| Operating System | xen | xen | 4.3.0 | Yes |
| Operating System | xen | xen | 4.3.1 | Yes |
| Operating System | xen | xen | 4.4.0 | Yes |