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| author | Ian Jackson <Ian.Jackson@eu.citrix.com> | 2012-11-14 11:46:12 +0000 |
|---|---|---|
| committer | Ian Jackson <Ian.Jackson@eu.citrix.com> | 2012-11-14 11:46:12 +0000 |
| commit | 95a0c10357c502a0b0b960e7133e792695ef0b58 (patch) | |
| tree | 8aa00758b75a1895f798fd50ddd6de1ff20f610e /tools/blktap2/drivers/hashtable_utility.c | |
| parent | 1d435032de14b9dec808102940309047903f7ed0 (diff) | |
| download | xen-95a0c10357c502a0b0b960e7133e792695ef0b58.tar.gz xen-95a0c10357c502a0b0b960e7133e792695ef0b58.tar.bz2 xen-95a0c10357c502a0b0b960e7133e792695ef0b58.zip | |
compat/gnttab: Prevent infinite loop in compat code
c/s 20281:95ea2052b41b, which introduces Grant Table version 2
hypercalls introduces a vulnerability whereby the compat hypercall
handler can fall into an infinite loop.
If the watchdog is enabled, Xen will die after the timeout.
This is a security problem, XSA-24 / CVE-2012-4539.
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
xen-unstable changeset: 26151:b64a7d868f06
Backport-requested-by: security@xen.org
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
Diffstat (limited to 'tools/blktap2/drivers/hashtable_utility.c')
0 files changed, 0 insertions, 0 deletions