| commit | 7ea11bf376aea4bf8340eb363de9777c7f93e556 | |
| author | Stefano Stabellini <stefano.stabellini@eu.citrix.com> | |
| Fri, 18 Dec 2015 15:10:09 +0000 (18 15:10 +0000) | ||
| committer | Stefano Stabellini <stefano.stabellini@eu.citrix.com> | |
| Fri, 18 Dec 2015 15:10:09 +0000 (18 15:10 +0000) | ||
| tree | 64f99103ff5838afd549d7edc7da01dc6032f23c | treesnapshot (tar.gz zip) |
| parent | f9e98e5d7a67367b862941e339a98b8322fa0cea | commitdiff |
xenfb: avoid reading twice the same fields from the shared page
Reading twice the same field could give the guest an attack of
opportunity. In the case of event->type, gcc could compile the switch
statement into a jump table, effectively ending up reading the type
field multiple times.
This is part of XSA-155.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Reading twice the same field could give the guest an attack of
opportunity. In the case of event->type, gcc could compile the switch
statement into a jump table, effectively ending up reading the type
field multiple times.
This is part of XSA-155.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
| hw/display/xenfb.c | diffblobblamehistory |