diff options
| author |   Mario Preksavec | 2017-09-18 23:05:24 +0200 |
|---|---|---|
| committer |   David Spencer | 2017-09-23 17:34:16 +0200 |
| commit | 0738227939177fbbbf4af44238b4222d2be040c8 (patch) | |
| tree | ee298bc83ea227f2118d456b77d216cbd81abf37 /system/xen/xsa/xsa232.patch | |
| parent | c9bcfd5b7d0b29bc5d59bac9d76149d743da6cf9 (diff) | |
| download | slackbuilds-0738227939177fbbbf4af44238b4222d2be040c8.tar.gz | |
system/xen: XSA 231-235 update.
Signed-off-by: Mario Preksavec <mario@slackware.hr>
Diffstat (limited to 'system/xen/xsa/xsa232.patch')
| -rw-r--r-- | system/xen/xsa/xsa232.patch | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/system/xen/xsa/xsa232.patch b/system/xen/xsa/xsa232.patch new file mode 100644 index 0000000000..9e5f35c7d6 --- /dev/null +++ b/system/xen/xsa/xsa232.patch @@ -0,0 +1,23 @@ +From: Andrew Cooper <andrew.cooper3@citrix.com> +Subject: grant_table: fix GNTTABOP_cache_flush handling + +Don't fall over a NULL grant_table pointer when the owner of the domain +is a system domain (DOMID_{XEN,IO} etc). + +This is XSA-232. + +Reported-by: Matthew Daley <mattd@bugfuzz.com> +Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com> +Reviewed-by: Jan Beulich <jbeulich@suse.com> + +--- a/xen/common/grant_table.c ++++ b/xen/common/grant_table.c +@@ -3053,7 +3053,7 @@ static int cache_flush(gnttab_cache_flus + + page = mfn_to_page(mfn); + owner = page_get_owner_and_reference(page); +- if ( !owner ) ++ if ( !owner || !owner->grant_table ) + { + rcu_unlock_domain(d); + return -EPERM; |