Juergen Gross 6b1775f26a xen/grant-table: add gnttab_try_end_foreign_access() ... Add a new grant table function gnttab_try_end_foreign_access(), which will remove and free a grant if it is not in use. Its main use case is to either free a grant if it is no longer in use, or to take some other action if it is still in use. This other action can be an error exit, or (e.g. in the case of blkfront persistent grant feature) some special handling. This is CVE-2022-23036, CVE-2022-23038 / part of XSA-396. Reported-by: Demi Marie Obenour <demi@invisiblethingslab.com> Signed-off-by: Juergen Gross <jgross@suse.com> Reviewed-by: Jan Beulich <jbeulich@suse.com> --- V2: - new patch V4: - add comments to header (Jan Beulich)		2022-03-07 09:48:54 +01:00
..
events	xen/console: harden hvc_xen against event channel storms	2021-12-16 08:24:08 +01:00
xen-pciback	xen-pciback: allow compiling on other archs than x86	2021-11-02 08:03:43 -05:00
xenbus	xen/xenbus: don't let xenbus_grant_ring() remove grants in error case	2022-03-07 09:48:54 +01:00
xenfs
acpi.c
arm-device.c
balloon.c	xen/balloon: Bring alloc(free)_xenballooned_pages helpers back	2022-01-06 09:53:35 +01:00
biomerge.c
cpu_hotplug.c	xen/cpuhotplug: Fix initial CPU offlining for PV(H) guests	2020-05-21 13:01:45 -05:00
dbgp.c
efi.c
evtchn.c	xen/evtchn: use READ/WRITE_ONCE() for accessing ring indices	2021-02-23 10:07:52 -06:00
features.c	xen: check required Xen features	2021-08-30 11:57:45 +02:00
gntalloc.c
gntdev-common.h	xen: Use evtchn_type_t as a type for event channels	2020-04-07 12:12:54 +02:00
gntdev-dmabuf.c	dma-buf: move dma-buf symbols into the DMA_BUF module namespace	2021-10-25 14:53:08 +02:00
gntdev-dmabuf.h
gntdev.c	xen/gntdev: fix unmap notification order	2022-01-06 08:52:22 +01:00
grant-table.c	xen/grant-table: add gnttab_try_end_foreign_access()	2022-03-07 09:48:54 +01:00
Kconfig	arm/xen: Read extended regions from DT and init Xen resource	2022-01-06 09:53:41 +01:00
Makefile	xen-pciback: allow compiling on other archs than x86	2021-11-02 08:03:43 -05:00
manage.c	xen/manage: Fix fall-through warnings for Clang	2020-12-16 07:58:44 +01:00
mcelog.c
mem-reservation.c	x86/xen: remove 32-bit pv leftovers	2021-11-02 08:03:43 -05:00
pci.c	xen/pci: Make use of the helper macro LIST_HEAD()	2022-02-10 11:10:23 +01:00
pcpu.c	xen: Use DEVICE_ATTR_*() macro	2021-07-05 09:23:31 +02:00
platform-pci.c	xen: Set platform PCI device INTX affinity to CPU0	2021-01-13 16:12:03 +01:00
privcmd-buf.c
privcmd.c	xen/privcmd: drop "pages" parameter from xen_remap_pfn()	2021-10-05 08:20:27 +02:00
privcmd.h
pvcalls-back.c	xen/pvcalls-back: Remove redundant 'flush_workqueue()' calls	2021-11-02 07:45:44 -05:00
pvcalls-front.c	xen: flag pvcalls-front to be not essential for system boot	2021-11-23 13:42:20 -06:00
pvcalls-front.h
swiotlb-xen.c	Merge branch 'akpm' (patches from Andrew)	2021-11-06 14:08:17 -07:00
sys-hypervisor.c
time.c	x86/paravirt: Switch time pvops functions to use static_call()	2021-03-11 16:17:52 +01:00
unpopulated-alloc.c	xen/unpopulated-alloc: Add mechanism to use Xen resource	2022-01-06 09:53:38 +01:00
xen-acpi-pad.c
xen-acpi-processor.c	xen: Fix implicit type conversion	2021-11-02 07:45:44 -05:00
xen-balloon.c	xen: Use DEVICE_ATTR_*() macro	2021-07-05 09:23:31 +02:00
xen-front-pgdir-shbuf.c	xen-front-pgdir-shbuf: don't record wrong grant handle upon error	2021-02-23 12:35:43 -06:00
xen-scsiback.c	isystem: trim/fixup stdarg.h and other headers	2021-08-19 09:02:55 +09:00
xlate_mmu.c	xen: add helpers to allocate unpopulated memory	2020-09-04 10:00:01 +02:00