diff options
Diffstat (limited to 'meta/recipes-devtools/qemu/qemu/CVE-2020-13659.patch')
| -rw-r--r-- | meta/recipes-devtools/qemu/qemu/CVE-2020-13659.patch | 58 |
1 files changed, 0 insertions, 58 deletions
diff --git a/meta/recipes-devtools/qemu/qemu/CVE-2020-13659.patch b/meta/recipes-devtools/qemu/qemu/CVE-2020-13659.patch deleted file mode 100644 index 4d12ae8f16..0000000000 --- a/meta/recipes-devtools/qemu/qemu/CVE-2020-13659.patch +++ /dev/null @@ -1,58 +0,0 @@ -From 77f55eac6c433e23e82a1b88b2d74f385c4c7d82 Mon Sep 17 00:00:00 2001 -From: Prasad J Pandit <pjp@fedoraproject.org> -Date: Tue, 26 May 2020 16:47:43 +0530 -Subject: [PATCH] exec: set map length to zero when returning NULL -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -When mapping physical memory into host's virtual address space, -'address_space_map' may return NULL if BounceBuffer is in_use. -Set and return '*plen = 0' to avoid later NULL pointer dereference. - -Reported-by: Alexander Bulekov <alxndr@bu.edu> -Fixes: https://bugs.launchpad.net/qemu/+bug/1878259 -Suggested-by: Paolo Bonzini <pbonzini@redhat.com> -Suggested-by: Peter Maydell <peter.maydell@linaro.org> -Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org> -Message-Id: <20200526111743.428367-1-ppandit@redhat.com> -Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> -Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> - -Upstream-Status: Backport [77f55eac6c433e23e82a1b88b2d74f385c4c7d82] -CVE: CVE-2020-13659 -Signed-off-by: Sakib Sajal <sakib.sajal@windriver.com> ---- - exec.c | 1 + - include/exec/memory.h | 3 ++- - 2 files changed, 3 insertions(+), 1 deletion(-) - -diff --git a/exec.c b/exec.c -index 9cbde85d8c..778263f1c6 100644 ---- a/exec.c -+++ b/exec.c -@@ -3540,6 +3540,7 @@ void *address_space_map(AddressSpace *as, - - if (!memory_access_is_direct(mr, is_write)) { - if (atomic_xchg(&bounce.in_use, true)) { -+ *plen = 0; - return NULL; - } - /* Avoid unbounded allocations */ -diff --git a/include/exec/memory.h b/include/exec/memory.h -index bd7fdd6081..af8ca7824e 100644 ---- a/include/exec/memory.h -+++ b/include/exec/memory.h -@@ -2314,7 +2314,8 @@ bool address_space_access_valid(AddressSpace *as, hwaddr addr, hwaddr len, - /* address_space_map: map a physical memory region into a host virtual address - * - * May map a subset of the requested range, given by and returned in @plen. -- * May return %NULL if resources needed to perform the mapping are exhausted. -+ * May return %NULL and set *@plen to zero(0), if resources needed to perform -+ * the mapping are exhausted. - * Use only for reads OR writes - not for read-modify-write operations. - * Use cpu_register_map_client() to know when retrying the map operation is - * likely to succeed. --- -2.20.1 - |